./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product13.cil.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_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/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_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/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_295e7376-94d1-491e-b12b-a97a4cf83a32/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 102266cd9873aec631509424dd889c2e48b781667738cfaa50930481a41b1570 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:28:41,812 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:28:41,874 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:28:41,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:28:41,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:28:41,901 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:28:41,902 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:28:41,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:28:41,903 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:28:41,904 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:28:41,904 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:28:41,905 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:28:41,906 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:28:41,906 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:28:41,907 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:28:41,907 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:28:41,908 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:28:41,908 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:28:41,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:28:41,909 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:28:41,910 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:28:41,912 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:28:41,912 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:28:41,912 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:28:41,913 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:28:41,913 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:28:41,914 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:28:41,914 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:28:41,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:28:41,915 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:28:41,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:28:41,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:28:41,916 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:28:41,916 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:28:41,916 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:28:41,917 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:28:41,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:28:41,917 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:28:41,918 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:28:41,918 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:28:41,919 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:28:41,919 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:28:41,919 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_295e7376-94d1-491e-b12b-a97a4cf83a32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 102266cd9873aec631509424dd889c2e48b781667738cfaa50930481a41b1570 [2023-11-29 06:28:42,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:28:42,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:28:42,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:28:42,166 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:28:42,167 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:28:42,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c [2023-11-29 06:28:44,951 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:28:45,218 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:28:45,218 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c [2023-11-29 06:28:45,239 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/data/96773354f/5be4d9408de74ad48c845a6fea603cd7/FLAG751336595 [2023-11-29 06:28:45,254 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/data/96773354f/5be4d9408de74ad48c845a6fea603cd7 [2023-11-29 06:28:45,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:28:45,258 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:28:45,260 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:28:45,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:28:45,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:28:45,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:28:45" (1/1) ... [2023-11-29 06:28:45,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@895f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:45, skipping insertion in model container [2023-11-29 06:28:45,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:28:45" (1/1) ... [2023-11-29 06:28:45,344 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:28:45,843 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_295e7376-94d1-491e-b12b-a97a4cf83a32/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c[61687,61700] [2023-11-29 06:28:45,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:28:45,862 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:28:45,872 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [48] [2023-11-29 06:28:45,873 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [66] [2023-11-29 06:28:45,874 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [432] [2023-11-29 06:28:45,874 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [481] [2023-11-29 06:28:45,874 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [588] [2023-11-29 06:28:45,874 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [855] [2023-11-29 06:28:45,874 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1930] [2023-11-29 06:28:45,875 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"VerifyForward_spec.i","") [2204] [2023-11-29 06:28:45,875 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2236] [2023-11-29 06:28:45,875 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2637] [2023-11-29 06:28:45,875 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2850] [2023-11-29 06:28:45,953 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_295e7376-94d1-491e-b12b-a97a4cf83a32/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c[61687,61700] [2023-11-29 06:28:45,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:28:45,981 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:28:45,988 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:28:45,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:45 WrapperNode [2023-11-29 06:28:45,989 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:28:45,990 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:28:45,991 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:28:45,991 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:28:45,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:45" (1/1) ... [2023-11-29 06:28:46,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:45" (1/1) ... [2023-11-29 06:28:46,093 INFO L138 Inliner]: procedures = 124, calls = 190, calls flagged for inlining = 52, calls inlined = 44, statements flattened = 840 [2023-11-29 06:28:46,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:28:46,094 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:28:46,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:28:46,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:28:46,107 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:45" (1/1) ... [2023-11-29 06:28:46,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:45" (1/1) ... [2023-11-29 06:28:46,113 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:45" (1/1) ... [2023-11-29 06:28:46,137 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2023-11-29 06:28:46,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:45" (1/1) ... [2023-11-29 06:28:46,138 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:45" (1/1) ... [2023-11-29 06:28:46,154 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:45" (1/1) ... [2023-11-29 06:28:46,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:45" (1/1) ... [2023-11-29 06:28:46,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:45" (1/1) ... [2023-11-29 06:28:46,171 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:45" (1/1) ... [2023-11-29 06:28:46,176 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:28:46,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:28:46,177 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:28:46,177 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:28:46,178 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:45" (1/1) ... [2023-11-29 06:28:46,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:28:46,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:46,220 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:28:46,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:28:46,259 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-29 06:28:46,259 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-29 06:28:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-29 06:28:46,260 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-29 06:28:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-29 06:28:46,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-29 06:28:46,260 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-29 06:28:46,260 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-29 06:28:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-29 06:28:46,261 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-29 06:28:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-29 06:28:46,261 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-29 06:28:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-29 06:28:46,261 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-29 06:28:46,262 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-29 06:28:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-29 06:28:46,262 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-29 06:28:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:28:46,262 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-29 06:28:46,262 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-29 06:28:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-29 06:28:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-29 06:28:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-29 06:28:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-29 06:28:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-29 06:28:46,263 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-29 06:28:46,263 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2023-11-29 06:28:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2023-11-29 06:28:46,264 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-29 06:28:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-29 06:28:46,264 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-29 06:28:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-29 06:28:46,264 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-29 06:28:46,264 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-29 06:28:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:28:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:28:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:28:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 06:28:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-29 06:28:46,265 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-29 06:28:46,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:28:46,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:28:46,445 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:28:46,448 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:28:47,053 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:28:47,124 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:28:47,124 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:28:47,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:28:47 BoogieIcfgContainer [2023-11-29 06:28:47,125 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:28:47,127 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:28:47,127 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:28:47,130 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:28:47,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:28:45" (1/3) ... [2023-11-29 06:28:47,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e5f67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:28:47, skipping insertion in model container [2023-11-29 06:28:47,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:28:45" (2/3) ... [2023-11-29 06:28:47,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e5f67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:28:47, skipping insertion in model container [2023-11-29 06:28:47,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:28:47" (3/3) ... [2023-11-29 06:28:47,133 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product13.cil.c [2023-11-29 06:28:47,153 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:28:47,153 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:28:47,209 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:28:47,215 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;@26091d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:28:47,216 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:28:47,221 INFO L276 IsEmpty]: Start isEmpty. Operand has 256 states, 199 states have (on average 1.6080402010050252) internal successors, (320), 201 states have internal predecessors, (320), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-29 06:28:47,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 06:28:47,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:28:47,239 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-29 06:28:47,240 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:28:47,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:47,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1386060010, now seen corresponding path program 1 times [2023-11-29 06:28:47,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:47,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35542129] [2023-11-29 06:28:47,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:47,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:47,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:28:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:47,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:28:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:47,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:28:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:47,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 06:28:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:47,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 06:28:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:47,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 06:28:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:47,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 06:28:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:47,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 06:28:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:47,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 06:28:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:47,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 06:28:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 06:28:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:47,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 06:28:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:47,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 06:28:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 06:28:47,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:47,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35542129] [2023-11-29 06:28:47,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35542129] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:47,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017002649] [2023-11-29 06:28:47,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:47,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:47,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:47,921 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:47,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:28:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:48,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 06:28:48,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 06:28:48,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:28:48,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017002649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:48,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:28:48,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2023-11-29 06:28:48,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010374409] [2023-11-29 06:28:48,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:48,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:28:48,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:48,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:28:48,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:28:48,333 INFO L87 Difference]: Start difference. First operand has 256 states, 199 states have (on average 1.6080402010050252) internal successors, (320), 201 states have internal predecessors, (320), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:28:48,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:28:48,404 INFO L93 Difference]: Finished difference Result 371 states and 562 transitions. [2023-11-29 06:28:48,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:28:48,406 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 98 [2023-11-29 06:28:48,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:28:48,419 INFO L225 Difference]: With dead ends: 371 [2023-11-29 06:28:48,419 INFO L226 Difference]: Without dead ends: 253 [2023-11-29 06:28:48,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:28:48,425 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:28:48,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:28:48,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-29 06:28:48,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2023-11-29 06:28:48,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 197 states have (on average 1.5888324873096447) internal successors, (313), 198 states have internal predecessors, (313), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-29 06:28:48,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 388 transitions. [2023-11-29 06:28:48,477 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 388 transitions. Word has length 98 [2023-11-29 06:28:48,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:28:48,478 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 388 transitions. [2023-11-29 06:28:48,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:28:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 388 transitions. [2023-11-29 06:28:48,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 06:28:48,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:28:48,485 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 06:28:48,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:28:48,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:48,691 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:28:48,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:48,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1349726118, now seen corresponding path program 1 times [2023-11-29 06:28:48,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:48,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000442723] [2023-11-29 06:28:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:48,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:48,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:28:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:48,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:28:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:48,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:28:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:48,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 06:28:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:48,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 06:28:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:48,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 06:28:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:48,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 06:28:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:48,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 06:28:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:48,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 06:28:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:48,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:28:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:48,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 06:28:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:48,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 06:28:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:48,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 06:28:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 06:28:48,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:48,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000442723] [2023-11-29 06:28:48,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000442723] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:48,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225571254] [2023-11-29 06:28:48,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:48,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:48,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:48,980 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:48,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:28:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:28:49,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 06:28:49,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:28:49,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225571254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:49,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:28:49,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-11-29 06:28:49,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095023809] [2023-11-29 06:28:49,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:49,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:28:49,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:49,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:28:49,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:28:49,310 INFO L87 Difference]: Start difference. First operand 253 states and 388 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:28:49,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:28:49,363 INFO L93 Difference]: Finished difference Result 367 states and 549 transitions. [2023-11-29 06:28:49,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:28:49,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 99 [2023-11-29 06:28:49,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:28:49,367 INFO L225 Difference]: With dead ends: 367 [2023-11-29 06:28:49,368 INFO L226 Difference]: Without dead ends: 255 [2023-11-29 06:28:49,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:28:49,371 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 0 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:28:49,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 757 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:28:49,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-29 06:28:49,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-11-29 06:28:49,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 199 states have (on average 1.5829145728643217) internal successors, (315), 200 states have internal predecessors, (315), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-29 06:28:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 390 transitions. [2023-11-29 06:28:49,396 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 390 transitions. Word has length 99 [2023-11-29 06:28:49,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:28:49,397 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 390 transitions. [2023-11-29 06:28:49,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:28:49,397 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 390 transitions. [2023-11-29 06:28:49,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-29 06:28:49,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:28:49,402 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2023-11-29 06:28:49,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 06:28:49,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:49,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:28:49,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:49,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1592724573, now seen corresponding path program 1 times [2023-11-29 06:28:49,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:49,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380848937] [2023-11-29 06:28:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:49,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:28:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:28:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:28:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 06:28:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 06:28:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 06:28:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 06:28:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 06:28:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 06:28:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 06:28:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 06:28:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 06:28:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 06:28:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:49,884 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 06:28:49,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:49,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380848937] [2023-11-29 06:28:49,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380848937] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:49,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577201571] [2023-11-29 06:28:49,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:49,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:49,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:49,889 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:49,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:28:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:50,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:28:50,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 06:28:50,201 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:28:50,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577201571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:50,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:28:50,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-11-29 06:28:50,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056384345] [2023-11-29 06:28:50,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:50,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:28:50,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:50,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:28:50,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:28:50,204 INFO L87 Difference]: Start difference. First operand 255 states and 390 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:28:50,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:28:50,255 INFO L93 Difference]: Finished difference Result 536 states and 832 transitions. [2023-11-29 06:28:50,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:28:50,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2023-11-29 06:28:50,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:28:50,259 INFO L225 Difference]: With dead ends: 536 [2023-11-29 06:28:50,259 INFO L226 Difference]: Without dead ends: 303 [2023-11-29 06:28:50,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:28:50,262 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 95 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:28:50,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 727 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:28:50,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-29 06:28:50,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 298. [2023-11-29 06:28:50,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 231 states have (on average 1.593073593073593) internal successors, (368), 232 states have internal predecessors, (368), 49 states have call successors, (49), 17 states have call predecessors, (49), 17 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-29 06:28:50,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 465 transitions. [2023-11-29 06:28:50,288 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 465 transitions. Word has length 104 [2023-11-29 06:28:50,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:28:50,289 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 465 transitions. [2023-11-29 06:28:50,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:28:50,289 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 465 transitions. [2023-11-29 06:28:50,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 06:28:50,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:28:50,292 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 06:28:50,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:28:50,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:50,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:28:50,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:50,494 INFO L85 PathProgramCache]: Analyzing trace with hash -974450773, now seen corresponding path program 1 times [2023-11-29 06:28:50,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:50,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271792623] [2023-11-29 06:28:50,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:50,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:50,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:28:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:50,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:28:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:50,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:28:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:50,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 06:28:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:50,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 06:28:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:50,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 06:28:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:50,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 06:28:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:50,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 06:28:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:50,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:28:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:50,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 06:28:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:50,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 06:28:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:50,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 06:28:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:50,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 06:28:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 06:28:50,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:50,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271792623] [2023-11-29 06:28:50,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271792623] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:50,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745393404] [2023-11-29 06:28:50,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:50,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:50,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:50,717 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:50,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:28:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:50,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:28:50,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:51,054 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:28:51,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:28:51,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745393404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:51,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:28:51,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-29 06:28:51,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574413569] [2023-11-29 06:28:51,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:51,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:28:51,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:51,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:28:51,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:28:51,057 INFO L87 Difference]: Start difference. First operand 298 states and 465 transitions. Second operand has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 06:28:51,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:28:51,162 INFO L93 Difference]: Finished difference Result 591 states and 924 transitions. [2023-11-29 06:28:51,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:28:51,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 105 [2023-11-29 06:28:51,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:28:51,167 INFO L225 Difference]: With dead ends: 591 [2023-11-29 06:28:51,167 INFO L226 Difference]: Without dead ends: 300 [2023-11-29 06:28:51,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:28:51,170 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 8 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:28:51,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1469 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:28:51,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-29 06:28:51,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2023-11-29 06:28:51,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 232 states have (on average 1.5905172413793103) internal successors, (369), 234 states have internal predecessors, (369), 49 states have call successors, (49), 17 states have call predecessors, (49), 18 states have return successors, (50), 48 states have call predecessors, (50), 48 states have call successors, (50) [2023-11-29 06:28:51,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 468 transitions. [2023-11-29 06:28:51,191 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 468 transitions. Word has length 105 [2023-11-29 06:28:51,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:28:51,192 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 468 transitions. [2023-11-29 06:28:51,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 06:28:51,192 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 468 transitions. [2023-11-29 06:28:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-29 06:28:51,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:28:51,195 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2023-11-29 06:28:51,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:28:51,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:51,397 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:28:51,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:51,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1949251539, now seen corresponding path program 1 times [2023-11-29 06:28:51,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:51,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627512038] [2023-11-29 06:28:51,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:51,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:51,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:28:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:51,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:28:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:51,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:28:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:51,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:28:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:51,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 06:28:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:51,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 06:28:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:51,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 06:28:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:51,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 06:28:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:51,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 06:28:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:28:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 06:28:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:51,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 06:28:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:51,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 06:28:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 06:28:51,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:51,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627512038] [2023-11-29 06:28:51,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627512038] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:51,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140814158] [2023-11-29 06:28:51,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:51,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:51,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:51,669 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:51,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:28:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:51,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:28:51,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:52,004 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:28:52,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:28:52,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140814158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:52,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:28:52,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-11-29 06:28:52,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114250396] [2023-11-29 06:28:52,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:52,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:28:52,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:52,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:28:52,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:28:52,007 INFO L87 Difference]: Start difference. First operand 300 states and 468 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 06:28:52,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:28:52,118 INFO L93 Difference]: Finished difference Result 593 states and 929 transitions. [2023-11-29 06:28:52,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:28:52,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 106 [2023-11-29 06:28:52,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:28:52,122 INFO L225 Difference]: With dead ends: 593 [2023-11-29 06:28:52,122 INFO L226 Difference]: Without dead ends: 302 [2023-11-29 06:28:52,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:28:52,124 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 8 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:28:52,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1455 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:28:52,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-29 06:28:52,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2023-11-29 06:28:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 233 states have (on average 1.5879828326180256) internal successors, (370), 236 states have internal predecessors, (370), 49 states have call successors, (49), 17 states have call predecessors, (49), 19 states have return successors, (55), 48 states have call predecessors, (55), 48 states have call successors, (55) [2023-11-29 06:28:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 474 transitions. [2023-11-29 06:28:52,142 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 474 transitions. Word has length 106 [2023-11-29 06:28:52,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:28:52,143 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 474 transitions. [2023-11-29 06:28:52,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 06:28:52,143 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 474 transitions. [2023-11-29 06:28:52,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 06:28:52,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:28:52,146 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:28:52,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:28:52,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:52,347 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:28:52,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:52,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1732478352, now seen corresponding path program 1 times [2023-11-29 06:28:52,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:52,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960111069] [2023-11-29 06:28:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:52,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:52,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:28:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:52,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:28:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:52,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:28:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:52,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:28:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:28:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:52,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 06:28:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 06:28:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:52,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 06:28:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 06:28:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:52,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 06:28:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:52,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 06:28:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:52,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 06:28:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:52,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 06:28:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:52,581 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 06:28:52,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:52,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960111069] [2023-11-29 06:28:52,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960111069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:52,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:28:52,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 06:28:52,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920228883] [2023-11-29 06:28:52,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:52,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:28:52,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:52,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:28:52,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:28:52,611 INFO L87 Difference]: Start difference. First operand 302 states and 474 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 06:28:53,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:28:53,933 INFO L93 Difference]: Finished difference Result 636 states and 1004 transitions. [2023-11-29 06:28:53,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:28:53,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 107 [2023-11-29 06:28:53,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:28:53,937 INFO L225 Difference]: With dead ends: 636 [2023-11-29 06:28:53,937 INFO L226 Difference]: Without dead ends: 353 [2023-11-29 06:28:53,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:28:53,939 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 620 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:28:53,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 812 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 06:28:53,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-11-29 06:28:53,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 302. [2023-11-29 06:28:53,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 233 states have (on average 1.5879828326180256) internal successors, (370), 236 states have internal predecessors, (370), 49 states have call successors, (49), 17 states have call predecessors, (49), 19 states have return successors, (54), 48 states have call predecessors, (54), 48 states have call successors, (54) [2023-11-29 06:28:53,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 473 transitions. [2023-11-29 06:28:53,964 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 473 transitions. Word has length 107 [2023-11-29 06:28:53,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:28:53,964 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 473 transitions. [2023-11-29 06:28:53,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 06:28:53,964 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 473 transitions. [2023-11-29 06:28:53,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-29 06:28:53,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:28:53,967 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-29 06:28:53,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:28:53,967 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:28:53,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:53,968 INFO L85 PathProgramCache]: Analyzing trace with hash 833067318, now seen corresponding path program 2 times [2023-11-29 06:28:53,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:53,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122404726] [2023-11-29 06:28:53,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:53,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:54,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:28:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:54,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:28:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:54,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:28:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:54,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:28:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:54,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:28:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:54,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 06:28:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:54,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 06:28:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:54,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 06:28:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:54,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 06:28:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:54,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 06:28:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:54,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 06:28:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:54,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 06:28:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:54,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 06:28:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 06:28:54,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:54,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122404726] [2023-11-29 06:28:54,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122404726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:54,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:28:54,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 06:28:54,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548964573] [2023-11-29 06:28:54,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:54,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:28:54,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:54,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:28:54,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:28:54,224 INFO L87 Difference]: Start difference. First operand 302 states and 473 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 06:28:55,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:28:55,485 INFO L93 Difference]: Finished difference Result 638 states and 1007 transitions. [2023-11-29 06:28:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:28:55,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 108 [2023-11-29 06:28:55,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:28:55,488 INFO L225 Difference]: With dead ends: 638 [2023-11-29 06:28:55,488 INFO L226 Difference]: Without dead ends: 355 [2023-11-29 06:28:55,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:28:55,491 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 616 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:28:55,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 812 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1536 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 06:28:55,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-29 06:28:55,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 304. [2023-11-29 06:28:55,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 234 states have (on average 1.5854700854700854) internal successors, (371), 238 states have internal predecessors, (371), 49 states have call successors, (49), 17 states have call predecessors, (49), 20 states have return successors, (56), 48 states have call predecessors, (56), 48 states have call successors, (56) [2023-11-29 06:28:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 476 transitions. [2023-11-29 06:28:55,531 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 476 transitions. Word has length 108 [2023-11-29 06:28:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:28:55,532 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 476 transitions. [2023-11-29 06:28:55,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 06:28:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 476 transitions. [2023-11-29 06:28:55,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 06:28:55,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:28:55,535 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-29 06:28:55,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:28:55,535 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:28:55,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:55,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1171731531, now seen corresponding path program 1 times [2023-11-29 06:28:55,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:55,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967874225] [2023-11-29 06:28:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:55,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:55,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:28:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:28:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:55,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:28:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:55,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:28:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:55,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:28:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:55,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:28:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:55,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 06:28:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:55,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 06:28:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:55,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 06:28:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:55,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 06:28:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:55,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 06:28:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:55,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 06:28:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:55,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 06:28:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:55,774 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 06:28:55,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:55,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967874225] [2023-11-29 06:28:55,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967874225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:55,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:28:55,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 06:28:55,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366834447] [2023-11-29 06:28:55,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:55,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:28:55,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:55,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:28:55,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:28:55,776 INFO L87 Difference]: Start difference. First operand 304 states and 476 transitions. Second operand has 11 states, 10 states have (on average 7.3) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 06:28:57,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:28:57,467 INFO L93 Difference]: Finished difference Result 636 states and 1002 transitions. [2023-11-29 06:28:57,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:28:57,468 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.3) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 109 [2023-11-29 06:28:57,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:28:57,471 INFO L225 Difference]: With dead ends: 636 [2023-11-29 06:28:57,471 INFO L226 Difference]: Without dead ends: 355 [2023-11-29 06:28:57,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-11-29 06:28:57,472 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 625 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:28:57,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 1163 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2593 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 06:28:57,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-29 06:28:57,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 304. [2023-11-29 06:28:57,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 234 states have (on average 1.5854700854700854) internal successors, (371), 238 states have internal predecessors, (371), 49 states have call successors, (49), 17 states have call predecessors, (49), 20 states have return successors, (55), 48 states have call predecessors, (55), 48 states have call successors, (55) [2023-11-29 06:28:57,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 475 transitions. [2023-11-29 06:28:57,494 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 475 transitions. Word has length 109 [2023-11-29 06:28:57,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:28:57,494 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 475 transitions. [2023-11-29 06:28:57,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.3) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 06:28:57,495 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 475 transitions. [2023-11-29 06:28:57,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-29 06:28:57,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:28:57,496 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-29 06:28:57,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:28:57,497 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:28:57,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:57,497 INFO L85 PathProgramCache]: Analyzing trace with hash 637014674, now seen corresponding path program 2 times [2023-11-29 06:28:57,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:57,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528244944] [2023-11-29 06:28:57,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:57,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:57,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:28:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:57,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:28:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:57,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:28:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:57,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:28:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:57,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:28:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:57,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:28:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:57,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 06:28:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:57,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 06:28:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:57,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 06:28:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:57,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 06:28:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:57,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 06:28:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:57,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 06:28:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:57,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 06:28:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 06:28:57,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:57,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528244944] [2023-11-29 06:28:57,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528244944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:28:57,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:28:57,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 06:28:57,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409462015] [2023-11-29 06:28:57,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:28:57,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:28:57,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:57,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:28:57,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:28:57,687 INFO L87 Difference]: Start difference. First operand 304 states and 475 transitions. Second operand has 11 states, 10 states have (on average 7.4) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 06:28:59,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:28:59,373 INFO L93 Difference]: Finished difference Result 638 states and 1008 transitions. [2023-11-29 06:28:59,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:28:59,373 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.4) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 110 [2023-11-29 06:28:59,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:28:59,376 INFO L225 Difference]: With dead ends: 638 [2023-11-29 06:28:59,376 INFO L226 Difference]: Without dead ends: 357 [2023-11-29 06:28:59,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2023-11-29 06:28:59,379 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 621 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:28:59,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1163 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2627 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 06:28:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-11-29 06:28:59,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 306. [2023-11-29 06:28:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 235 states have (on average 1.5829787234042554) internal successors, (372), 240 states have internal predecessors, (372), 49 states have call successors, (49), 17 states have call predecessors, (49), 21 states have return successors, (60), 48 states have call predecessors, (60), 48 states have call successors, (60) [2023-11-29 06:28:59,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 481 transitions. [2023-11-29 06:28:59,405 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 481 transitions. Word has length 110 [2023-11-29 06:28:59,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:28:59,405 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 481 transitions. [2023-11-29 06:28:59,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.4) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 06:28:59,406 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 481 transitions. [2023-11-29 06:28:59,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 06:28:59,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:28:59,408 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:28:59,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:28:59,409 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:28:59,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:28:59,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1544804454, now seen corresponding path program 1 times [2023-11-29 06:28:59,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:28:59,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591851915] [2023-11-29 06:28:59,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:59,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:28:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:59,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:28:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:59,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:28:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:59,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:28:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:59,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:28:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:59,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:28:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:59,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:28:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:59,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 06:28:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:59,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:28:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:59,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 06:28:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:59,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 06:28:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:59,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 06:28:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:59,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 06:28:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:59,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 06:28:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:28:59,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:28:59,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591851915] [2023-11-29 06:28:59,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591851915] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:28:59,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317911679] [2023-11-29 06:28:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:28:59,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:28:59,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:28:59,562 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:28:59,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:28:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:28:59,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 1022 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:28:59,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:28:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:28:59,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:28:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:28:59,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317911679] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:28:59,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:28:59,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2023-11-29 06:28:59,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974642083] [2023-11-29 06:28:59,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:28:59,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:28:59,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:28:59,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:28:59,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:28:59,973 INFO L87 Difference]: Start difference. First operand 306 states and 481 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-29 06:29:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:29:01,300 INFO L93 Difference]: Finished difference Result 779 states and 1293 transitions. [2023-11-29 06:29:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:29:01,300 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 111 [2023-11-29 06:29:01,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:29:01,305 INFO L225 Difference]: With dead ends: 779 [2023-11-29 06:29:01,305 INFO L226 Difference]: Without dead ends: 667 [2023-11-29 06:29:01,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:29:01,307 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 1102 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:29:01,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1112 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 06:29:01,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-11-29 06:29:01,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 601. [2023-11-29 06:29:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 466 states have (on average 1.6351931330472103) internal successors, (762), 471 states have internal predecessors, (762), 113 states have call successors, (113), 17 states have call predecessors, (113), 21 states have return successors, (134), 112 states have call predecessors, (134), 112 states have call successors, (134) [2023-11-29 06:29:01,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1009 transitions. [2023-11-29 06:29:01,337 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1009 transitions. Word has length 111 [2023-11-29 06:29:01,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:29:01,337 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 1009 transitions. [2023-11-29 06:29:01,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-29 06:29:01,337 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1009 transitions. [2023-11-29 06:29:01,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 06:29:01,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:29:01,341 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:29:01,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:29:01,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 06:29:01,542 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:29:01,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:01,542 INFO L85 PathProgramCache]: Analyzing trace with hash -392639081, now seen corresponding path program 1 times [2023-11-29 06:29:01,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:01,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784892110] [2023-11-29 06:29:01,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:01,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:01,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:29:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:01,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:29:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:01,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:29:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:01,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:29:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:01,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:29:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:01,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:29:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:01,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:29:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:01,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 06:29:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:01,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 06:29:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:01,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 06:29:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:01,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 06:29:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:01,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 06:29:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:01,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:29:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:29:01,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:01,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784892110] [2023-11-29 06:29:01,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784892110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:29:01,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:29:01,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:29:01,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769083676] [2023-11-29 06:29:01,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:29:01,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:29:01,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:01,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:29:01,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:29:01,658 INFO L87 Difference]: Start difference. First operand 601 states and 1009 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:02,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:29:02,568 INFO L93 Difference]: Finished difference Result 1490 states and 2562 transitions. [2023-11-29 06:29:02,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:29:02,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2023-11-29 06:29:02,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:29:02,577 INFO L225 Difference]: With dead ends: 1490 [2023-11-29 06:29:02,577 INFO L226 Difference]: Without dead ends: 949 [2023-11-29 06:29:02,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:29:02,581 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 703 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:29:02,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 596 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:29:02,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2023-11-29 06:29:02,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 893. [2023-11-29 06:29:02,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 694 states have (on average 1.6412103746397695) internal successors, (1139), 699 states have internal predecessors, (1139), 177 states have call successors, (177), 17 states have call predecessors, (177), 21 states have return successors, (208), 176 states have call predecessors, (208), 176 states have call successors, (208) [2023-11-29 06:29:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1524 transitions. [2023-11-29 06:29:02,639 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1524 transitions. Word has length 117 [2023-11-29 06:29:02,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:29:02,640 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1524 transitions. [2023-11-29 06:29:02,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1524 transitions. [2023-11-29 06:29:02,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 06:29:02,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:29:02,647 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-29 06:29:02,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:29:02,647 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:29:02,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:02,648 INFO L85 PathProgramCache]: Analyzing trace with hash -405494380, now seen corresponding path program 1 times [2023-11-29 06:29:02,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:02,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038743822] [2023-11-29 06:29:02,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:02,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:02,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:29:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:02,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:29:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:02,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:29:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:02,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:29:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:02,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:29:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:02,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:29:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:02,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 06:29:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:02,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:29:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:02,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 06:29:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:02,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 06:29:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:02,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 06:29:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:02,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 06:29:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:02,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 06:29:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:29:02,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:02,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038743822] [2023-11-29 06:29:02,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038743822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:29:02,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:29:02,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:29:02,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773091640] [2023-11-29 06:29:02,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:29:02,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:29:02,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:02,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:29:02,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:29:02,767 INFO L87 Difference]: Start difference. First operand 893 states and 1524 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:03,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:29:03,605 INFO L93 Difference]: Finished difference Result 2187 states and 3789 transitions. [2023-11-29 06:29:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:29:03,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-11-29 06:29:03,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:29:03,615 INFO L225 Difference]: With dead ends: 2187 [2023-11-29 06:29:03,616 INFO L226 Difference]: Without dead ends: 1404 [2023-11-29 06:29:03,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:29:03,620 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 701 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:29:03,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 572 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:29:03,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2023-11-29 06:29:03,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1348. [2023-11-29 06:29:03,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1054 states have (on average 1.6442125237191652) internal successors, (1733), 1059 states have internal predecessors, (1733), 272 states have call successors, (272), 17 states have call predecessors, (272), 21 states have return successors, (303), 271 states have call predecessors, (303), 271 states have call successors, (303) [2023-11-29 06:29:03,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2308 transitions. [2023-11-29 06:29:03,704 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2308 transitions. Word has length 118 [2023-11-29 06:29:03,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:29:03,704 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 2308 transitions. [2023-11-29 06:29:03,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:03,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2308 transitions. [2023-11-29 06:29:03,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 06:29:03,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:29:03,715 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2023-11-29 06:29:03,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:29:03,716 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:29:03,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:03,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1527237017, now seen corresponding path program 1 times [2023-11-29 06:29:03,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:03,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892446713] [2023-11-29 06:29:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:03,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:03,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:29:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:03,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:29:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:03,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:29:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:03,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:29:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:03,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:29:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:03,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:29:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:03,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 06:29:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:03,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 06:29:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:03,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 06:29:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:03,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 06:29:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:03,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 06:29:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:03,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 06:29:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:03,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 06:29:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:29:03,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:03,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892446713] [2023-11-29 06:29:03,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892446713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:29:03,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:29:03,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:29:03,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934912007] [2023-11-29 06:29:03,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:29:03,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:29:03,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:03,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:29:03,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:29:03,829 INFO L87 Difference]: Start difference. First operand 1348 states and 2308 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:04,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:29:04,762 INFO L93 Difference]: Finished difference Result 3205 states and 5601 transitions. [2023-11-29 06:29:04,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:29:04,763 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2023-11-29 06:29:04,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:29:04,779 INFO L225 Difference]: With dead ends: 3205 [2023-11-29 06:29:04,780 INFO L226 Difference]: Without dead ends: 2087 [2023-11-29 06:29:04,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:29:04,785 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 699 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:29:04,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 570 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:29:04,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2023-11-29 06:29:04,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 2031. [2023-11-29 06:29:04,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 1614 states have (on average 1.647459727385378) internal successors, (2659), 1619 states have internal predecessors, (2659), 395 states have call successors, (395), 17 states have call predecessors, (395), 21 states have return successors, (442), 394 states have call predecessors, (442), 394 states have call successors, (442) [2023-11-29 06:29:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 3496 transitions. [2023-11-29 06:29:04,918 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 3496 transitions. Word has length 119 [2023-11-29 06:29:04,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:29:04,919 INFO L495 AbstractCegarLoop]: Abstraction has 2031 states and 3496 transitions. [2023-11-29 06:29:04,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:04,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 3496 transitions. [2023-11-29 06:29:04,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 06:29:04,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:29:04,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:29:04,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:29:04,933 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:29:04,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:04,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1618461717, now seen corresponding path program 1 times [2023-11-29 06:29:04,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:04,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697088486] [2023-11-29 06:29:04,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:04,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:04,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:29:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:29:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:05,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:29:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:05,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:29:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:05,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:29:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:05,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:29:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:05,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 06:29:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 06:29:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:05,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 06:29:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 06:29:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:05,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 06:29:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:05,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 06:29:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:05,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 06:29:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:29:05,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:05,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697088486] [2023-11-29 06:29:05,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697088486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:29:05,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:29:05,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:29:05,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565349147] [2023-11-29 06:29:05,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:29:05,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:29:05,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:05,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:29:05,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:29:05,043 INFO L87 Difference]: Start difference. First operand 2031 states and 3496 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:05,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:29:05,927 INFO L93 Difference]: Finished difference Result 4775 states and 8406 transitions. [2023-11-29 06:29:05,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:29:05,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2023-11-29 06:29:05,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:29:05,953 INFO L225 Difference]: With dead ends: 4775 [2023-11-29 06:29:05,953 INFO L226 Difference]: Without dead ends: 3171 [2023-11-29 06:29:05,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:29:05,961 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 697 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:29:05,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 570 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:29:05,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2023-11-29 06:29:06,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3115. [2023-11-29 06:29:06,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3115 states, 2519 states have (on average 1.649464073044859) internal successors, (4155), 2524 states have internal predecessors, (4155), 574 states have call successors, (574), 17 states have call predecessors, (574), 21 states have return successors, (647), 573 states have call predecessors, (647), 573 states have call successors, (647) [2023-11-29 06:29:06,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 5376 transitions. [2023-11-29 06:29:06,176 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 5376 transitions. Word has length 120 [2023-11-29 06:29:06,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:29:06,177 INFO L495 AbstractCegarLoop]: Abstraction has 3115 states and 5376 transitions. [2023-11-29 06:29:06,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:06,177 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 5376 transitions. [2023-11-29 06:29:06,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 06:29:06,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:29:06,194 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:29:06,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 06:29:06,194 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:29:06,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:06,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1522970677, now seen corresponding path program 1 times [2023-11-29 06:29:06,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:06,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341810870] [2023-11-29 06:29:06,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:06,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:06,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:29:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:06,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:29:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:06,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:29:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:06,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:29:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:06,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:29:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:29:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:06,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 06:29:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:06,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 06:29:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:06,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 06:29:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:06,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 06:29:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:06,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 06:29:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:06,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 06:29:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:06,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 06:29:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:06,301 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:29:06,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:06,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341810870] [2023-11-29 06:29:06,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341810870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:29:06,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:29:06,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:29:06,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428465797] [2023-11-29 06:29:06,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:29:06,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:29:06,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:06,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:29:06,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:29:06,304 INFO L87 Difference]: Start difference. First operand 3115 states and 5376 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:07,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:29:07,224 INFO L93 Difference]: Finished difference Result 7606 states and 13418 transitions. [2023-11-29 06:29:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:29:07,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2023-11-29 06:29:07,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:29:07,253 INFO L225 Difference]: With dead ends: 7606 [2023-11-29 06:29:07,253 INFO L226 Difference]: Without dead ends: 5141 [2023-11-29 06:29:07,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:29:07,261 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 695 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:29:07,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 598 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:29:07,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5141 states. [2023-11-29 06:29:07,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5141 to 5085. [2023-11-29 06:29:07,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5085 states, 4113 states have (on average 1.6401653294432288) internal successors, (6746), 4118 states have internal predecessors, (6746), 950 states have call successors, (950), 17 states have call predecessors, (950), 21 states have return successors, (1067), 949 states have call predecessors, (1067), 949 states have call successors, (1067) [2023-11-29 06:29:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5085 states to 5085 states and 8763 transitions. [2023-11-29 06:29:07,510 INFO L78 Accepts]: Start accepts. Automaton has 5085 states and 8763 transitions. Word has length 121 [2023-11-29 06:29:07,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:29:07,510 INFO L495 AbstractCegarLoop]: Abstraction has 5085 states and 8763 transitions. [2023-11-29 06:29:07,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:07,511 INFO L276 IsEmpty]: Start isEmpty. Operand 5085 states and 8763 transitions. [2023-11-29 06:29:07,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 06:29:07,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:29:07,525 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:29:07,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:29:07,525 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:29:07,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:07,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1393009287, now seen corresponding path program 1 times [2023-11-29 06:29:07,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:07,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041259509] [2023-11-29 06:29:07,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:07,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:07,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:29:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:07,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:29:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:07,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:29:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:07,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:29:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:07,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:29:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:07,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:29:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:07,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 06:29:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:07,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 06:29:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:07,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 06:29:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:07,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 06:29:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:07,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 06:29:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:07,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 06:29:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 06:29:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:29:07,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:07,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041259509] [2023-11-29 06:29:07,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041259509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:29:07,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:29:07,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:29:07,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196329098] [2023-11-29 06:29:07,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:29:07,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:29:07,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:07,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:29:07,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:29:07,622 INFO L87 Difference]: Start difference. First operand 5085 states and 8763 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:08,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:29:08,785 INFO L93 Difference]: Finished difference Result 12587 states and 22166 transitions. [2023-11-29 06:29:08,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:29:08,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2023-11-29 06:29:08,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:29:08,838 INFO L225 Difference]: With dead ends: 12587 [2023-11-29 06:29:08,838 INFO L226 Difference]: Without dead ends: 8518 [2023-11-29 06:29:08,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:29:08,850 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 693 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:29:08,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 572 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:29:08,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8518 states. [2023-11-29 06:29:09,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8518 to 8462. [2023-11-29 06:29:09,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8462 states, 6884 states have (on average 1.6369843114468332) internal successors, (11269), 6889 states have internal predecessors, (11269), 1556 states have call successors, (1556), 17 states have call predecessors, (1556), 21 states have return successors, (1751), 1555 states have call predecessors, (1751), 1555 states have call successors, (1751) [2023-11-29 06:29:09,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8462 states to 8462 states and 14576 transitions. [2023-11-29 06:29:09,175 INFO L78 Accepts]: Start accepts. Automaton has 8462 states and 14576 transitions. Word has length 122 [2023-11-29 06:29:09,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:29:09,176 INFO L495 AbstractCegarLoop]: Abstraction has 8462 states and 14576 transitions. [2023-11-29 06:29:09,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:09,176 INFO L276 IsEmpty]: Start isEmpty. Operand 8462 states and 14576 transitions. [2023-11-29 06:29:09,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 06:29:09,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:29:09,198 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:29:09,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 06:29:09,198 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:29:09,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:09,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1752050153, now seen corresponding path program 1 times [2023-11-29 06:29:09,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:09,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868240037] [2023-11-29 06:29:09,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:09,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:09,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:29:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:29:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:09,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:29:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:09,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:29:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:09,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:29:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:09,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:29:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:09,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 06:29:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:09,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 06:29:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:09,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 06:29:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:09,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 06:29:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:09,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 06:29:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:09,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:29:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:09,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 06:29:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:09,285 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:29:09,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:09,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868240037] [2023-11-29 06:29:09,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868240037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:29:09,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:29:09,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:29:09,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339242135] [2023-11-29 06:29:09,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:29:09,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:29:09,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:09,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:29:09,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:29:09,287 INFO L87 Difference]: Start difference. First operand 8462 states and 14576 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:10,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:29:10,480 INFO L93 Difference]: Finished difference Result 21939 states and 38565 transitions. [2023-11-29 06:29:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:29:10,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2023-11-29 06:29:10,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:29:10,527 INFO L225 Difference]: With dead ends: 21939 [2023-11-29 06:29:10,527 INFO L226 Difference]: Without dead ends: 14902 [2023-11-29 06:29:10,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:29:10,547 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 691 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:29:10,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 584 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:29:10,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14902 states. [2023-11-29 06:29:11,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14902 to 14846. [2023-11-29 06:29:11,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14846 states, 12065 states have (on average 1.626688769167012) internal successors, (19626), 12070 states have internal predecessors, (19626), 2759 states have call successors, (2759), 17 states have call predecessors, (2759), 21 states have return successors, (3098), 2758 states have call predecessors, (3098), 2758 states have call successors, (3098) [2023-11-29 06:29:11,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14846 states to 14846 states and 25483 transitions. [2023-11-29 06:29:11,388 INFO L78 Accepts]: Start accepts. Automaton has 14846 states and 25483 transitions. Word has length 123 [2023-11-29 06:29:11,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:29:11,389 INFO L495 AbstractCegarLoop]: Abstraction has 14846 states and 25483 transitions. [2023-11-29 06:29:11,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:11,389 INFO L276 IsEmpty]: Start isEmpty. Operand 14846 states and 25483 transitions. [2023-11-29 06:29:11,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:29:11,418 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:29:11,418 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:29:11,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:29:11,419 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:29:11,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:11,419 INFO L85 PathProgramCache]: Analyzing trace with hash -245749862, now seen corresponding path program 1 times [2023-11-29 06:29:11,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:11,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258118111] [2023-11-29 06:29:11,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:11,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:11,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:29:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:11,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:29:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:11,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:29:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:11,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:29:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:11,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:29:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:11,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:29:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 06:29:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:11,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 06:29:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:11,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 06:29:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:11,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 06:29:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 06:29:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:11,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 06:29:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:11,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 06:29:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:29:11,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:11,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258118111] [2023-11-29 06:29:11,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258118111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:29:11,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:29:11,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:29:11,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940115646] [2023-11-29 06:29:11,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:29:11,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:29:11,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:11,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:29:11,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:29:11,531 INFO L87 Difference]: Start difference. First operand 14846 states and 25483 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:12,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:29:12,945 INFO L93 Difference]: Finished difference Result 39298 states and 68951 transitions. [2023-11-29 06:29:12,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:29:12,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2023-11-29 06:29:12,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:29:13,088 INFO L225 Difference]: With dead ends: 39298 [2023-11-29 06:29:13,088 INFO L226 Difference]: Without dead ends: 26469 [2023-11-29 06:29:13,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:29:13,132 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 689 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:29:13,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 571 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:29:13,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26469 states. [2023-11-29 06:29:14,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26469 to 26413. [2023-11-29 06:29:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26413 states, 21593 states have (on average 1.6223313110730329) internal successors, (35031), 21598 states have internal predecessors, (35031), 4798 states have call successors, (4798), 17 states have call predecessors, (4798), 21 states have return successors, (5411), 4797 states have call predecessors, (5411), 4797 states have call successors, (5411) [2023-11-29 06:29:14,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26413 states to 26413 states and 45240 transitions. [2023-11-29 06:29:14,350 INFO L78 Accepts]: Start accepts. Automaton has 26413 states and 45240 transitions. Word has length 124 [2023-11-29 06:29:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:29:14,351 INFO L495 AbstractCegarLoop]: Abstraction has 26413 states and 45240 transitions. [2023-11-29 06:29:14,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:14,351 INFO L276 IsEmpty]: Start isEmpty. Operand 26413 states and 45240 transitions. [2023-11-29 06:29:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 06:29:14,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:29:14,375 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 06:29:14,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 06:29:14,375 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:29:14,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:14,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1344965543, now seen corresponding path program 1 times [2023-11-29 06:29:14,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:14,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579214692] [2023-11-29 06:29:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:14,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:14,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:29:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:14,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:29:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:14,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:29:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:14,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:29:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:14,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:29:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:29:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:14,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 06:29:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:14,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 06:29:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:14,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 06:29:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 06:29:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:14,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 06:29:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:14,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 06:29:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:14,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 06:29:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:29:14,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:14,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579214692] [2023-11-29 06:29:14,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579214692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:29:14,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:29:14,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:29:14,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533846391] [2023-11-29 06:29:14,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:29:14,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:29:14,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:14,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:29:14,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:29:14,483 INFO L87 Difference]: Start difference. First operand 26413 states and 45240 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:16,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:29:16,834 INFO L93 Difference]: Finished difference Result 71910 states and 125375 transitions. [2023-11-29 06:29:16,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:29:16,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2023-11-29 06:29:16,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:29:16,976 INFO L225 Difference]: With dead ends: 71910 [2023-11-29 06:29:16,976 INFO L226 Difference]: Without dead ends: 48229 [2023-11-29 06:29:17,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:29:17,014 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 687 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:29:17,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 578 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:29:17,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48229 states. [2023-11-29 06:29:18,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48229 to 48173. [2023-11-29 06:29:18,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48173 states, 39638 states have (on average 1.6167061910288107) internal successors, (64083), 39643 states have internal predecessors, (64083), 8513 states have call successors, (8513), 17 states have call predecessors, (8513), 21 states have return successors, (9658), 8512 states have call predecessors, (9658), 8512 states have call successors, (9658) [2023-11-29 06:29:18,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48173 states to 48173 states and 82254 transitions. [2023-11-29 06:29:18,877 INFO L78 Accepts]: Start accepts. Automaton has 48173 states and 82254 transitions. Word has length 125 [2023-11-29 06:29:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:29:18,878 INFO L495 AbstractCegarLoop]: Abstraction has 48173 states and 82254 transitions. [2023-11-29 06:29:18,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 48173 states and 82254 transitions. [2023-11-29 06:29:18,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 06:29:18,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:29:18,907 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1] [2023-11-29 06:29:18,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 06:29:18,907 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:29:18,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:18,907 INFO L85 PathProgramCache]: Analyzing trace with hash 582161882, now seen corresponding path program 1 times [2023-11-29 06:29:18,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:18,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734345622] [2023-11-29 06:29:18,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:18,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:18,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:29:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:18,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:29:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:29:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:29:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:18,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:29:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:18,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:29:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:18,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 06:29:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:18,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 06:29:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:18,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 06:29:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:18,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 06:29:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:19,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 06:29:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:19,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 06:29:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:19,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 06:29:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:19,004 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:29:19,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:19,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734345622] [2023-11-29 06:29:19,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734345622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:29:19,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:29:19,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:29:19,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638565555] [2023-11-29 06:29:19,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:29:19,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:29:19,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:19,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:29:19,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:29:19,007 INFO L87 Difference]: Start difference. First operand 48173 states and 82254 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:22,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:29:22,089 INFO L93 Difference]: Finished difference Result 89629 states and 156739 transitions. [2023-11-29 06:29:22,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:29:22,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2023-11-29 06:29:22,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:29:22,369 INFO L225 Difference]: With dead ends: 89629 [2023-11-29 06:29:22,369 INFO L226 Difference]: Without dead ends: 89517 [2023-11-29 06:29:22,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:29:22,402 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 685 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:29:22,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 571 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:29:22,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89517 states. [2023-11-29 06:29:25,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89517 to 89461. [2023-11-29 06:29:25,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89461 states, 74127 states have (on average 1.6095754583350197) internal successors, (119313), 74132 states have internal predecessors, (119313), 15312 states have call successors, (15312), 17 states have call predecessors, (15312), 21 states have return successors, (17503), 15311 states have call predecessors, (17503), 15311 states have call successors, (17503) [2023-11-29 06:29:25,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89461 states to 89461 states and 152128 transitions. [2023-11-29 06:29:25,551 INFO L78 Accepts]: Start accepts. Automaton has 89461 states and 152128 transitions. Word has length 126 [2023-11-29 06:29:25,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:29:25,551 INFO L495 AbstractCegarLoop]: Abstraction has 89461 states and 152128 transitions. [2023-11-29 06:29:25,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:25,551 INFO L276 IsEmpty]: Start isEmpty. Operand 89461 states and 152128 transitions. [2023-11-29 06:29:25,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-29 06:29:25,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:29:25,588 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1] [2023-11-29 06:29:25,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 06:29:25,588 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:29:25,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:25,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1902408120, now seen corresponding path program 1 times [2023-11-29 06:29:25,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:25,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744397788] [2023-11-29 06:29:25,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:25,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:25,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:29:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:25,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:29:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:25,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:29:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:25,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:29:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:25,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:29:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:25,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:29:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:25,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:29:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:25,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 06:29:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:25,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 06:29:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:25,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 06:29:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:25,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 06:29:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:25,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 06:29:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:25,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 06:29:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:29:25,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:25,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744397788] [2023-11-29 06:29:25,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744397788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:29:25,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:29:25,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:29:25,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343636020] [2023-11-29 06:29:25,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:29:25,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:29:25,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:25,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:29:25,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:29:25,776 INFO L87 Difference]: Start difference. First operand 89461 states and 152128 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:29,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:29:29,604 INFO L93 Difference]: Finished difference Result 89615 states and 155629 transitions. [2023-11-29 06:29:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:29:29,605 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2023-11-29 06:29:29,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:29:29,858 INFO L225 Difference]: With dead ends: 89615 [2023-11-29 06:29:29,858 INFO L226 Difference]: Without dead ends: 89512 [2023-11-29 06:29:29,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:29:29,884 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 734 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:29:29,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 841 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 06:29:29,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89512 states. [2023-11-29 06:29:32,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89512 to 89461. [2023-11-29 06:29:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89461 states, 74127 states have (on average 1.6095619679738826) internal successors, (119312), 74132 states have internal predecessors, (119312), 15312 states have call successors, (15312), 17 states have call predecessors, (15312), 21 states have return successors, (17503), 15311 states have call predecessors, (17503), 15311 states have call successors, (17503) [2023-11-29 06:29:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89461 states to 89461 states and 152127 transitions. [2023-11-29 06:29:33,425 INFO L78 Accepts]: Start accepts. Automaton has 89461 states and 152127 transitions. Word has length 127 [2023-11-29 06:29:33,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:29:33,426 INFO L495 AbstractCegarLoop]: Abstraction has 89461 states and 152127 transitions. [2023-11-29 06:29:33,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:29:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 89461 states and 152127 transitions. [2023-11-29 06:29:33,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-29 06:29:33,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:29:33,521 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:29:33,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 06:29:33,521 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:29:33,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:33,522 INFO L85 PathProgramCache]: Analyzing trace with hash 698040247, now seen corresponding path program 1 times [2023-11-29 06:29:33,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:33,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725347705] [2023-11-29 06:29:33,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:33,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:33,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:29:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:33,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:29:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:33,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:29:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:33,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:29:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:33,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:29:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:33,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:29:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:33,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:29:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:33,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 06:29:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:33,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 06:29:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:33,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 06:29:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:33,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 06:29:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:33,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 06:29:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:33,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 06:29:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:33,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-29 06:29:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:29:33,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:33,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725347705] [2023-11-29 06:29:33,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725347705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:29:33,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:29:33,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:29:33,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947167957] [2023-11-29 06:29:33,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:29:33,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:29:33,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:33,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:29:33,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:29:33,815 INFO L87 Difference]: Start difference. First operand 89461 states and 152127 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 06:29:37,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:29:37,848 INFO L93 Difference]: Finished difference Result 89770 states and 155846 transitions. [2023-11-29 06:29:37,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:29:37,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2023-11-29 06:29:37,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:29:38,162 INFO L225 Difference]: With dead ends: 89770 [2023-11-29 06:29:38,162 INFO L226 Difference]: Without dead ends: 89667 [2023-11-29 06:29:38,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:29:38,193 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 1218 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:29:38,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 805 Invalid, 2234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 06:29:38,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89667 states. [2023-11-29 06:29:41,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89667 to 89566. [2023-11-29 06:29:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89566 states, 74210 states have (on average 1.609432691011993) internal successors, (119436), 74215 states have internal predecessors, (119436), 15323 states have call successors, (15323), 26 states have call predecessors, (15323), 32 states have return successors, (17516), 15324 states have call predecessors, (17516), 15321 states have call successors, (17516) [2023-11-29 06:29:42,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89566 states to 89566 states and 152275 transitions. [2023-11-29 06:29:42,088 INFO L78 Accepts]: Start accepts. Automaton has 89566 states and 152275 transitions. Word has length 134 [2023-11-29 06:29:42,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:29:42,088 INFO L495 AbstractCegarLoop]: Abstraction has 89566 states and 152275 transitions. [2023-11-29 06:29:42,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 06:29:42,089 INFO L276 IsEmpty]: Start isEmpty. Operand 89566 states and 152275 transitions. [2023-11-29 06:29:42,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 06:29:42,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:29:42,144 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:29:42,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 06:29:42,145 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:29:42,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:42,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1168196839, now seen corresponding path program 1 times [2023-11-29 06:29:42,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:42,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873320234] [2023-11-29 06:29:42,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:42,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:42,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:29:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:42,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:29:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:42,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:29:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:42,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:29:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:42,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:29:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:42,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:29:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:42,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:29:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:42,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 06:29:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:42,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 06:29:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:42,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 06:29:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:42,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 06:29:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:42,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 06:29:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 06:29:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:42,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 06:29:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:29:42,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:42,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873320234] [2023-11-29 06:29:42,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873320234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:29:42,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:29:42,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 06:29:42,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837437000] [2023-11-29 06:29:42,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:29:42,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:29:42,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:42,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:29:42,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:29:42,518 INFO L87 Difference]: Start difference. First operand 89566 states and 152275 transitions. Second operand has 15 states, 13 states have (on average 7.076923076923077) internal successors, (92), 11 states have internal predecessors, (92), 8 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-29 06:29:47,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:29:47,311 INFO L93 Difference]: Finished difference Result 89973 states and 156145 transitions. [2023-11-29 06:29:47,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 06:29:47,312 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.076923076923077) internal successors, (92), 11 states have internal predecessors, (92), 8 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) Word has length 135 [2023-11-29 06:29:47,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:29:47,602 INFO L225 Difference]: With dead ends: 89973 [2023-11-29 06:29:47,602 INFO L226 Difference]: Without dead ends: 89751 [2023-11-29 06:29:47,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=263, Invalid=997, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 06:29:47,637 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 994 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 4281 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 4532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 4281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:29:47,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 1686 Invalid, 4532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 4281 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 06:29:47,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89751 states. [2023-11-29 06:29:50,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89751 to 89619. [2023-11-29 06:29:50,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89619 states, 74251 states have (on average 1.6092981912701512) internal successors, (119492), 74258 states have internal predecessors, (119492), 15334 states have call successors, (15334), 27 states have call predecessors, (15334), 33 states have return successors, (17527), 15333 states have call predecessors, (17527), 15332 states have call successors, (17527) [2023-11-29 06:29:51,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89619 states to 89619 states and 152353 transitions. [2023-11-29 06:29:51,032 INFO L78 Accepts]: Start accepts. Automaton has 89619 states and 152353 transitions. Word has length 135 [2023-11-29 06:29:51,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:29:51,032 INFO L495 AbstractCegarLoop]: Abstraction has 89619 states and 152353 transitions. [2023-11-29 06:29:51,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.076923076923077) internal successors, (92), 11 states have internal predecessors, (92), 8 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-29 06:29:51,033 INFO L276 IsEmpty]: Start isEmpty. Operand 89619 states and 152353 transitions. [2023-11-29 06:29:51,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-29 06:29:51,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:29:51,150 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:29:51,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 06:29:51,150 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:29:51,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:51,151 INFO L85 PathProgramCache]: Analyzing trace with hash -342323313, now seen corresponding path program 1 times [2023-11-29 06:29:51,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:51,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201509946] [2023-11-29 06:29:51,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:51,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:29:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:29:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:29:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:29:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:29:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:29:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:29:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 06:29:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 06:29:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 06:29:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 06:29:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 06:29:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 06:29:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-29 06:29:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 06:29:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-29 06:29:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-29 06:29:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:29:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-29 06:29:51,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:29:51,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201509946] [2023-11-29 06:29:51,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201509946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:29:51,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:29:51,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:29:51,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471301889] [2023-11-29 06:29:51,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:29:51,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:29:51,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:29:51,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:29:51,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:29:51,357 INFO L87 Difference]: Start difference. First operand 89619 states and 152353 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 06:29:55,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:29:55,865 INFO L93 Difference]: Finished difference Result 90375 states and 156718 transitions. [2023-11-29 06:29:55,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:29:55,865 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2023-11-29 06:29:55,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:29:56,193 INFO L225 Difference]: With dead ends: 90375 [2023-11-29 06:29:56,193 INFO L226 Difference]: Without dead ends: 90141 [2023-11-29 06:29:56,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2023-11-29 06:29:56,217 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 984 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 2656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:29:56,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 810 Invalid, 2656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 06:29:56,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90141 states. [2023-11-29 06:29:59,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90141 to 89878. [2023-11-29 06:29:59,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89878 states, 74453 states have (on average 1.6088673391266974) internal successors, (119785), 74463 states have internal predecessors, (119785), 15367 states have call successors, (15367), 45 states have call predecessors, (15367), 57 states have return successors, (17566), 15369 states have call predecessors, (17566), 15363 states have call successors, (17566) [2023-11-29 06:29:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89878 states to 89878 states and 152718 transitions. [2023-11-29 06:29:59,765 INFO L78 Accepts]: Start accepts. Automaton has 89878 states and 152718 transitions. Word has length 159 [2023-11-29 06:29:59,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:29:59,765 INFO L495 AbstractCegarLoop]: Abstraction has 89878 states and 152718 transitions. [2023-11-29 06:29:59,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-29 06:29:59,766 INFO L276 IsEmpty]: Start isEmpty. Operand 89878 states and 152718 transitions. [2023-11-29 06:29:59,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-29 06:29:59,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:29:59,889 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:29:59,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 06:29:59,889 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:29:59,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:29:59,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1673574340, now seen corresponding path program 1 times [2023-11-29 06:29:59,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:29:59,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297352466] [2023-11-29 06:29:59,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:29:59,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:29:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:30:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:30:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:30:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:30:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:30:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:30:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:30:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 06:30:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 06:30:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 06:30:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 06:30:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 06:30:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-29 06:30:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 06:30:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-29 06:30:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-29 06:30:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-29 06:30:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-29 06:30:00,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:30:00,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297352466] [2023-11-29 06:30:00,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297352466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:30:00,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:30:00,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 06:30:00,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862758346] [2023-11-29 06:30:00,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:30:00,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:30:00,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:30:00,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:30:00,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:30:00,210 INFO L87 Difference]: Start difference. First operand 89878 states and 152718 transitions. Second operand has 14 states, 13 states have (on average 8.0) internal successors, (104), 10 states have internal predecessors, (104), 7 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-29 06:30:05,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:30:05,164 INFO L93 Difference]: Finished difference Result 90450 states and 156815 transitions. [2023-11-29 06:30:05,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 06:30:05,165 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.0) internal successors, (104), 10 states have internal predecessors, (104), 7 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 160 [2023-11-29 06:30:05,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:30:05,426 INFO L225 Difference]: With dead ends: 90450 [2023-11-29 06:30:05,427 INFO L226 Difference]: Without dead ends: 89972 [2023-11-29 06:30:05,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 06:30:05,457 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 999 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 3619 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 3873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 3619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:30:05,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 1563 Invalid, 3873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 3619 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 06:30:05,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89972 states. [2023-11-29 06:30:08,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89972 to 89781. [2023-11-29 06:30:08,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89781 states, 74377 states have (on average 1.6090189171383626) internal successors, (119674), 74389 states have internal predecessors, (119674), 15353 states have call successors, (15353), 39 states have call predecessors, (15353), 50 states have return successors, (17550), 15352 states have call predecessors, (17550), 15350 states have call successors, (17550) [2023-11-29 06:30:09,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89781 states to 89781 states and 152577 transitions. [2023-11-29 06:30:09,043 INFO L78 Accepts]: Start accepts. Automaton has 89781 states and 152577 transitions. Word has length 160 [2023-11-29 06:30:09,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:30:09,044 INFO L495 AbstractCegarLoop]: Abstraction has 89781 states and 152577 transitions. [2023-11-29 06:30:09,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.0) internal successors, (104), 10 states have internal predecessors, (104), 7 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-29 06:30:09,044 INFO L276 IsEmpty]: Start isEmpty. Operand 89781 states and 152577 transitions. [2023-11-29 06:30:09,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-29 06:30:09,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:30:09,180 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:30:09,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 06:30:09,181 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:30:09,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:30:09,181 INFO L85 PathProgramCache]: Analyzing trace with hash 661352921, now seen corresponding path program 1 times [2023-11-29 06:30:09,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:30:09,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332669603] [2023-11-29 06:30:09,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:09,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:30:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:30:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:30:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:30:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:30:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:30:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:30:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:30:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 06:30:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 06:30:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 06:30:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:30:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 06:30:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 06:30:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 06:30:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-29 06:30:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 06:30:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-29 06:30:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 06:30:09,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:30:09,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332669603] [2023-11-29 06:30:09,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332669603] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:30:09,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668841717] [2023-11-29 06:30:09,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:09,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:30:09,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:30:09,576 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:30:09,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:30:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:09,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 06:30:09,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:30:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 06:30:10,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:30:10,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668841717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:30:10,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:30:10,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2023-11-29 06:30:10,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232620330] [2023-11-29 06:30:10,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:30:10,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:30:10,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:30:10,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:30:10,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2023-11-29 06:30:10,113 INFO L87 Difference]: Start difference. First operand 89781 states and 152577 transitions. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 10 states have internal predecessors, (121), 6 states have call successors, (19), 5 states have call predecessors, (19), 6 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-29 06:30:13,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:30:13,304 INFO L93 Difference]: Finished difference Result 90660 states and 153821 transitions. [2023-11-29 06:30:13,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:30:13,305 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 10 states have internal predecessors, (121), 6 states have call successors, (19), 5 states have call predecessors, (19), 6 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 163 [2023-11-29 06:30:13,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:30:13,563 INFO L225 Difference]: With dead ends: 90660 [2023-11-29 06:30:13,564 INFO L226 Difference]: Without dead ends: 90348 [2023-11-29 06:30:13,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=1457, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 06:30:13,595 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 658 mSDsluCounter, 3071 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 3445 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:30:13,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 3445 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:30:13,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90348 states. [2023-11-29 06:30:17,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90348 to 90234. [2023-11-29 06:30:17,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90234 states, 74721 states have (on average 1.6082092049089278) internal successors, (120167), 74746 states have internal predecessors, (120167), 15419 states have call successors, (15419), 69 states have call predecessors, (15419), 93 states have return successors, (17634), 15418 states have call predecessors, (17634), 15413 states have call successors, (17634) [2023-11-29 06:30:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90234 states to 90234 states and 153220 transitions. [2023-11-29 06:30:17,389 INFO L78 Accepts]: Start accepts. Automaton has 90234 states and 153220 transitions. Word has length 163 [2023-11-29 06:30:17,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:30:17,389 INFO L495 AbstractCegarLoop]: Abstraction has 90234 states and 153220 transitions. [2023-11-29 06:30:17,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 10 states have internal predecessors, (121), 6 states have call successors, (19), 5 states have call predecessors, (19), 6 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2023-11-29 06:30:17,389 INFO L276 IsEmpty]: Start isEmpty. Operand 90234 states and 153220 transitions. [2023-11-29 06:30:17,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-29 06:30:17,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:30:17,495 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:30:17,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:30:17,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 06:30:17,696 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:30:17,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:30:17,697 INFO L85 PathProgramCache]: Analyzing trace with hash -522827802, now seen corresponding path program 1 times [2023-11-29 06:30:17,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:30:17,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537593462] [2023-11-29 06:30:17,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:17,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:30:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:30:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:30:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:30:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:30:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:30:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:30:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:30:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 06:30:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 06:30:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 06:30:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:30:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 06:30:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 06:30:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 06:30:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 06:30:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-29 06:30:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-29 06:30:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 06:30:18,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:30:18,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537593462] [2023-11-29 06:30:18,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537593462] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:30:18,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209107125] [2023-11-29 06:30:18,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:18,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:30:18,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:30:18,296 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:30:18,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:30:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:18,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 06:30:18,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:30:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 06:30:19,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:30:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 06:30:20,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209107125] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:30:20,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:30:20,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 18] total 52 [2023-11-29 06:30:20,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736538832] [2023-11-29 06:30:20,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:30:20,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-29 06:30:20,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:30:20,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-29 06:30:20,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2483, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 06:30:20,104 INFO L87 Difference]: Start difference. First operand 90234 states and 153220 transitions. Second operand has 52 states, 43 states have (on average 6.953488372093023) internal successors, (299), 46 states have internal predecessors, (299), 16 states have call successors, (53), 12 states have call predecessors, (53), 19 states have return successors, (47), 10 states have call predecessors, (47), 16 states have call successors, (47) [2023-11-29 06:30:39,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:30:39,697 INFO L93 Difference]: Finished difference Result 279584 states and 495704 transitions. [2023-11-29 06:30:39,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-11-29 06:30:39,698 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 43 states have (on average 6.953488372093023) internal successors, (299), 46 states have internal predecessors, (299), 16 states have call successors, (53), 12 states have call predecessors, (53), 19 states have return successors, (47), 10 states have call predecessors, (47), 16 states have call successors, (47) Word has length 164 [2023-11-29 06:30:39,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:30:40,875 INFO L225 Difference]: With dead ends: 279584 [2023-11-29 06:30:40,875 INFO L226 Difference]: Without dead ends: 278968 [2023-11-29 06:30:40,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3187 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1522, Invalid=11360, Unknown=0, NotChecked=0, Total=12882 [2023-11-29 06:30:40,955 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 3819 mSDsluCounter, 4134 mSDsCounter, 0 mSdLazyCounter, 18252 mSolverCounterSat, 1053 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3839 SdHoareTripleChecker+Valid, 4268 SdHoareTripleChecker+Invalid, 19305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1053 IncrementalHoareTripleChecker+Valid, 18252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:30:40,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3839 Valid, 4268 Invalid, 19305 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1053 Valid, 18252 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-11-29 06:30:41,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278968 states. [2023-11-29 06:30:54,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278968 to 270585. [2023-11-29 06:30:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270585 states, 224063 states have (on average 1.6083601487081758) internal successors, (360374), 224077 states have internal predecessors, (360374), 46158 states have call successors, (46158), 251 states have call predecessors, (46158), 363 states have return successors, (61645), 46256 states have call predecessors, (61645), 46134 states have call successors, (61645) [2023-11-29 06:30:55,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270585 states to 270585 states and 468177 transitions. [2023-11-29 06:30:55,967 INFO L78 Accepts]: Start accepts. Automaton has 270585 states and 468177 transitions. Word has length 164 [2023-11-29 06:30:55,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:30:55,968 INFO L495 AbstractCegarLoop]: Abstraction has 270585 states and 468177 transitions. [2023-11-29 06:30:55,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 43 states have (on average 6.953488372093023) internal successors, (299), 46 states have internal predecessors, (299), 16 states have call successors, (53), 12 states have call predecessors, (53), 19 states have return successors, (47), 10 states have call predecessors, (47), 16 states have call successors, (47) [2023-11-29 06:30:55,968 INFO L276 IsEmpty]: Start isEmpty. Operand 270585 states and 468177 transitions. [2023-11-29 06:30:56,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-29 06:30:56,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:30:56,562 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:30:56,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 06:30:56,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 06:30:56,763 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:30:56,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:30:56,763 INFO L85 PathProgramCache]: Analyzing trace with hash 318054991, now seen corresponding path program 1 times [2023-11-29 06:30:56,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:30:56,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364812980] [2023-11-29 06:30:56,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:56,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:30:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:30:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:30:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:30:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:30:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:30:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:30:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:30:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 06:30:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 06:30:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 06:30:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:30:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 06:30:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 06:30:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 06:30:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 06:30:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-29 06:30:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-29 06:30:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-29 06:30:57,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:30:57,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364812980] [2023-11-29 06:30:57,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364812980] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:30:57,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099512866] [2023-11-29 06:30:57,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:30:57,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:30:57,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:30:57,398 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:30:57,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:30:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:30:57,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 06:30:57,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:30:57,960 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 06:30:57,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:30:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:30:58,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099512866] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:30:58,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:30:58,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 37 [2023-11-29 06:30:58,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361989817] [2023-11-29 06:30:58,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:30:58,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 06:30:58,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:30:58,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 06:30:58,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1242, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 06:30:58,411 INFO L87 Difference]: Start difference. First operand 270585 states and 468177 transitions. Second operand has 37 states, 37 states have (on average 7.864864864864865) internal successors, (291), 30 states have internal predecessors, (291), 10 states have call successors, (52), 12 states have call predecessors, (52), 12 states have return successors, (46), 13 states have call predecessors, (46), 10 states have call successors, (46) [2023-11-29 06:31:35,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:31:35,309 INFO L93 Difference]: Finished difference Result 560339 states and 1001596 transitions. [2023-11-29 06:31:35,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2023-11-29 06:31:35,309 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 7.864864864864865) internal successors, (291), 30 states have internal predecessors, (291), 10 states have call successors, (52), 12 states have call predecessors, (52), 12 states have return successors, (46), 13 states have call predecessors, (46), 10 states have call successors, (46) Word has length 164 [2023-11-29 06:31:35,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:31:37,691 INFO L225 Difference]: With dead ends: 560339 [2023-11-29 06:31:37,692 INFO L226 Difference]: Without dead ends: 557251 [2023-11-29 06:31:37,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11124 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=4187, Invalid=30223, Unknown=0, NotChecked=0, Total=34410 [2023-11-29 06:31:37,883 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 6621 mSDsluCounter, 3324 mSDsCounter, 0 mSdLazyCounter, 15279 mSolverCounterSat, 1585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6624 SdHoareTripleChecker+Valid, 3452 SdHoareTripleChecker+Invalid, 16864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1585 IncrementalHoareTripleChecker+Valid, 15279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:31:37,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6624 Valid, 3452 Invalid, 16864 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1585 Valid, 15279 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-11-29 06:31:38,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557251 states. [2023-11-29 06:32:10,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557251 to 544873. [2023-11-29 06:32:10,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544873 states, 450999 states have (on average 1.6071632087876027) internal successors, (724829), 451136 states have internal predecessors, (724829), 92790 states have call successors, (92790), 718 states have call predecessors, (92790), 1083 states have return successors, (134819), 93018 states have call predecessors, (134819), 92718 states have call successors, (134819) [2023-11-29 06:32:13,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544873 states to 544873 states and 952438 transitions. [2023-11-29 06:32:13,731 INFO L78 Accepts]: Start accepts. Automaton has 544873 states and 952438 transitions. Word has length 164 [2023-11-29 06:32:13,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:32:13,731 INFO L495 AbstractCegarLoop]: Abstraction has 544873 states and 952438 transitions. [2023-11-29 06:32:13,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.864864864864865) internal successors, (291), 30 states have internal predecessors, (291), 10 states have call successors, (52), 12 states have call predecessors, (52), 12 states have return successors, (46), 13 states have call predecessors, (46), 10 states have call successors, (46) [2023-11-29 06:32:13,732 INFO L276 IsEmpty]: Start isEmpty. Operand 544873 states and 952438 transitions. [2023-11-29 06:32:15,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-29 06:32:15,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:32:15,381 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:32:15,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 06:32:15,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_295e7376-94d1-491e-b12b-a97a4cf83a32/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 06:32:15,582 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:32:15,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:32:15,582 INFO L85 PathProgramCache]: Analyzing trace with hash -524338139, now seen corresponding path program 1 times [2023-11-29 06:32:15,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:32:15,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391925693] [2023-11-29 06:32:15,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:32:15,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:32:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:32:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:32:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:32:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:32:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:32:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:32:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:32:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 06:32:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 06:32:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 06:32:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 06:32:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 06:32:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 06:32:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 06:32:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-29 06:32:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-29 06:32:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-29 06:32:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:32:15,808 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-29 06:32:15,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:32:15,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391925693] [2023-11-29 06:32:15,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391925693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:32:15,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:32:15,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 06:32:15,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058721018] [2023-11-29 06:32:15,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:32:15,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:32:15,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:32:15,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:32:15,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:32:15,810 INFO L87 Difference]: Start difference. First operand 544873 states and 952438 transitions. Second operand has 13 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 6 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2023-11-29 06:32:40,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:32:40,673 INFO L93 Difference]: Finished difference Result 558621 states and 992222 transitions. [2023-11-29 06:32:40,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 06:32:40,674 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 6 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 165 [2023-11-29 06:32:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:32:42,796 INFO L225 Difference]: With dead ends: 558621 [2023-11-29 06:32:42,796 INFO L226 Difference]: Without dead ends: 548869 [2023-11-29 06:32:42,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2023-11-29 06:32:42,976 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 978 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 3389 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 3663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 3389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:32:42,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 1440 Invalid, 3663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 3389 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 06:32:43,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548869 states.