./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB --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 1b548755c8e9cfcfe9ed8b47fb1ac823ac6821056e7770bffa975fdbf413b243 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:00:46,951 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:00:47,037 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:00:47,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:00:47,049 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:00:47,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:00:47,089 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:00:47,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:00:47,090 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:00:47,090 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:00:47,090 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:00:47,090 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:00:47,091 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:00:47,091 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:00:47,091 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:00:47,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:00:47,091 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:00:47,092 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:00:47,092 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:00:47,092 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:00:47,092 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:00:47,092 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:00:47,092 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:00:47,093 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:00:47,093 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:00:47,093 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:00:47,093 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:00:47,093 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:00:47,093 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:00:47,093 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:00:47,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:00:47,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:00:47,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:00:47,095 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:00:47,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:00:47,095 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:00:47,095 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:00:47,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:00:47,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:00:47,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:00:47,095 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:00:47,096 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:00:47,096 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:00:47,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:00:47,096 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:00:47,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:00:47,097 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:00:47,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:00:47,097 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 1b548755c8e9cfcfe9ed8b47fb1ac823ac6821056e7770bffa975fdbf413b243 [2024-11-28 04:00:47,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:00:47,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:00:47,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:00:47,452 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:00:47,453 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:00:47,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c [2024-11-28 04:00:50,557 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/data/4a4376747/dac33d97bd274c3db17e1f82ec2cc181/FLAG58c42a059 [2024-11-28 04:00:51,040 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:00:51,041 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c [2024-11-28 04:00:51,063 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/data/4a4376747/dac33d97bd274c3db17e1f82ec2cc181/FLAG58c42a059 [2024-11-28 04:00:51,141 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/data/4a4376747/dac33d97bd274c3db17e1f82ec2cc181 [2024-11-28 04:00:51,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:00:51,146 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:00:51,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:00:51,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:00:51,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:00:51,154 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:00:51" (1/1) ... [2024-11-28 04:00:51,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c48ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:51, skipping insertion in model container [2024-11-28 04:00:51,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:00:51" (1/1) ... [2024-11-28 04:00:51,221 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:00:51,659 WARN L250 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_e8d0f643-3d60-4345-8f18-08dad3f59aac/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c[14867,14880] [2024-11-28 04:00:51,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:00:51,976 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:00:51,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2024-11-28 04:00:51,991 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [168] [2024-11-28 04:00:51,991 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [751] [2024-11-28 04:00:51,991 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [768] [2024-11-28 04:00:51,991 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [777] [2024-11-28 04:00:51,991 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1848] [2024-11-28 04:00:51,991 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2247] [2024-11-28 04:00:51,992 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2608] [2024-11-28 04:00:51,992 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptForward_spec.i","") [2874] [2024-11-28 04:00:51,992 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2893] [2024-11-28 04:00:51,992 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3097] [2024-11-28 04:00:52,025 WARN L250 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_e8d0f643-3d60-4345-8f18-08dad3f59aac/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c[14867,14880] [2024-11-28 04:00:52,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:00:52,201 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:00:52,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:52 WrapperNode [2024-11-28 04:00:52,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:00:52,203 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:00:52,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:00:52,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:00:52,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:52" (1/1) ... [2024-11-28 04:00:52,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:52" (1/1) ... [2024-11-28 04:00:52,355 INFO L138 Inliner]: procedures = 151, calls = 262, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1307 [2024-11-28 04:00:52,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:00:52,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:00:52,356 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:00:52,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:00:52,367 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:52" (1/1) ... [2024-11-28 04:00:52,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:52" (1/1) ... [2024-11-28 04:00:52,374 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:52" (1/1) ... [2024-11-28 04:00:52,438 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]. [2024-11-28 04:00:52,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:52" (1/1) ... [2024-11-28 04:00:52,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:52" (1/1) ... [2024-11-28 04:00:52,480 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:52" (1/1) ... [2024-11-28 04:00:52,482 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:52" (1/1) ... [2024-11-28 04:00:52,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:52" (1/1) ... [2024-11-28 04:00:52,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:52" (1/1) ... [2024-11-28 04:00:52,525 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:52" (1/1) ... [2024-11-28 04:00:52,534 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:00:52,535 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:00:52,535 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:00:52,536 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:00:52,537 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:52" (1/1) ... [2024-11-28 04:00:52,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:00:52,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:00:52,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:00:52,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:00:52,628 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-11-28 04:00:52,629 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-11-28 04:00:52,629 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2024-11-28 04:00:52,629 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2024-11-28 04:00:52,629 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2024-11-28 04:00:52,629 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2024-11-28 04:00:52,629 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2024-11-28 04:00:52,629 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2024-11-28 04:00:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-28 04:00:52,630 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-28 04:00:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2024-11-28 04:00:52,630 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2024-11-28 04:00:52,630 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-28 04:00:52,631 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-28 04:00:52,631 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2024-11-28 04:00:52,631 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2024-11-28 04:00:52,632 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-28 04:00:52,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-28 04:00:52,632 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2024-11-28 04:00:52,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2024-11-28 04:00:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-28 04:00:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-28 04:00:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-28 04:00:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-28 04:00:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-28 04:00:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-28 04:00:52,633 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2024-11-28 04:00:52,633 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2024-11-28 04:00:52,636 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2024-11-28 04:00:52,637 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2024-11-28 04:00:52,637 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-28 04:00:52,637 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-28 04:00:52,637 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-11-28 04:00:52,637 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-11-28 04:00:52,637 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-28 04:00:52,637 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-28 04:00:52,637 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2024-11-28 04:00:52,638 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2024-11-28 04:00:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-28 04:00:52,638 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-28 04:00:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2024-11-28 04:00:52,638 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2024-11-28 04:00:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-28 04:00:52,638 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-28 04:00:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2024-11-28 04:00:52,638 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2024-11-28 04:00:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:00:52,638 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-11-28 04:00:52,638 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-11-28 04:00:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-11-28 04:00:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-11-28 04:00:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2024-11-28 04:00:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2024-11-28 04:00:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2024-11-28 04:00:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2024-11-28 04:00:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2024-11-28 04:00:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2024-11-28 04:00:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2024-11-28 04:00:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2024-11-28 04:00:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-28 04:00:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-28 04:00:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-28 04:00:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-28 04:00:52,639 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-28 04:00:52,639 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-28 04:00:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-11-28 04:00:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-11-28 04:00:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-28 04:00:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-28 04:00:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-28 04:00:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-28 04:00:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2024-11-28 04:00:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2024-11-28 04:00:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2024-11-28 04:00:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2024-11-28 04:00:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-28 04:00:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-28 04:00:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-11-28 04:00:52,640 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-11-28 04:00:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:00:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:00:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:00:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:00:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-28 04:00:52,641 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-28 04:00:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2024-11-28 04:00:52,641 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2024-11-28 04:00:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2024-11-28 04:00:52,641 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2024-11-28 04:00:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2024-11-28 04:00:52,641 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2024-11-28 04:00:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:00:52,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:00:52,946 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:00:52,949 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:00:54,774 INFO L? ?]: Removed 623 outVars from TransFormulas that were not future-live. [2024-11-28 04:00:54,774 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:00:54,803 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:00:54,804 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:00:54,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:00:54 BoogieIcfgContainer [2024-11-28 04:00:54,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:00:54,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:00:54,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:00:54,813 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:00:54,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:00:51" (1/3) ... [2024-11-28 04:00:54,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2042904b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:00:54, skipping insertion in model container [2024-11-28 04:00:54,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:00:52" (2/3) ... [2024-11-28 04:00:54,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2042904b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:00:54, skipping insertion in model container [2024-11-28 04:00:54,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:00:54" (3/3) ... [2024-11-28 04:00:54,817 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec0_productSimulator.cil.c [2024-11-28 04:00:54,839 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:00:54,843 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec0_productSimulator.cil.c that has 44 procedures, 599 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:00:54,957 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:00:54,974 INFO L333 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, 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;@5636c35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:00:54,974 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:00:54,983 INFO L276 IsEmpty]: Start isEmpty. Operand has 599 states, 445 states have (on average 1.5168539325842696) internal successors, (675), 465 states have internal predecessors, (675), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2024-11-28 04:00:55,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-28 04:00:55,028 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:00:55,029 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:00:55,031 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:00:55,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:00:55,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1498003027, now seen corresponding path program 1 times [2024-11-28 04:00:55,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:00:55,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566677917] [2024-11-28 04:00:55,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:55,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-28 04:00:55,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:55,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566677917] [2024-11-28 04:00:55,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566677917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:00:55,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:00:55,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:00:55,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675907876] [2024-11-28 04:00:55,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:00:55,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:00:55,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:55,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:00:55,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:00:55,758 INFO L87 Difference]: Start difference. First operand has 599 states, 445 states have (on average 1.5168539325842696) internal successors, (675), 465 states have internal predecessors, (675), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:00:55,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:00:55,897 INFO L93 Difference]: Finished difference Result 930 states and 1370 transitions. [2024-11-28 04:00:55,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:00:55,900 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 164 [2024-11-28 04:00:55,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:00:55,924 INFO L225 Difference]: With dead ends: 930 [2024-11-28 04:00:55,924 INFO L226 Difference]: Without dead ends: 592 [2024-11-28 04:00:55,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:00:55,939 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:00:55,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:00:55,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-28 04:00:56,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2024-11-28 04:00:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 439 states have (on average 1.5125284738041003) internal successors, (664), 458 states have internal predecessors, (664), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-28 04:00:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 881 transitions. [2024-11-28 04:00:56,053 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 881 transitions. Word has length 164 [2024-11-28 04:00:56,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:00:56,055 INFO L471 AbstractCegarLoop]: Abstraction has 592 states and 881 transitions. [2024-11-28 04:00:56,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:00:56,055 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 881 transitions. [2024-11-28 04:00:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-28 04:00:56,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:00:56,069 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:00:56,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:00:56,069 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:00:56,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:00:56,070 INFO L85 PathProgramCache]: Analyzing trace with hash -322953830, now seen corresponding path program 1 times [2024-11-28 04:00:56,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:00:56,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706815274] [2024-11-28 04:00:56,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:56,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-28 04:00:56,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:56,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706815274] [2024-11-28 04:00:56,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706815274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:00:56,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:00:56,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:00:56,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056363414] [2024-11-28 04:00:56,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:00:56,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:00:56,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:56,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:00:56,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:00:56,707 INFO L87 Difference]: Start difference. First operand 592 states and 881 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-28 04:00:56,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:00:56,900 INFO L93 Difference]: Finished difference Result 1148 states and 1706 transitions. [2024-11-28 04:00:56,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:00:56,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 184 [2024-11-28 04:00:56,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:00:56,910 INFO L225 Difference]: With dead ends: 1148 [2024-11-28 04:00:56,914 INFO L226 Difference]: Without dead ends: 592 [2024-11-28 04:00:56,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:00:56,918 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 0 mSDsluCounter, 2625 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3504 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:00:56,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3504 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:00:56,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-28 04:00:56,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2024-11-28 04:00:56,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 439 states have (on average 1.4965831435079726) internal successors, (657), 458 states have internal predecessors, (657), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-28 04:00:57,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 874 transitions. [2024-11-28 04:00:57,007 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 874 transitions. Word has length 184 [2024-11-28 04:00:57,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:00:57,007 INFO L471 AbstractCegarLoop]: Abstraction has 592 states and 874 transitions. [2024-11-28 04:00:57,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-28 04:00:57,007 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 874 transitions. [2024-11-28 04:00:57,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-28 04:00:57,014 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:00:57,015 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:00:57,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:00:57,015 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:00:57,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:00:57,017 INFO L85 PathProgramCache]: Analyzing trace with hash 139138492, now seen corresponding path program 1 times [2024-11-28 04:00:57,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:00:57,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355422994] [2024-11-28 04:00:57,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:57,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-28 04:00:57,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:57,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355422994] [2024-11-28 04:00:57,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355422994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:00:57,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161347840] [2024-11-28 04:00:57,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:57,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:00:57,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:00:57,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:00:57,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:00:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:58,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 1420 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:00:58,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:00:58,210 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-28 04:00:58,214 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:00:58,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161347840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:00:58,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:00:58,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-28 04:00:58,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398939951] [2024-11-28 04:00:58,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:00:58,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:00:58,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:58,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:00:58,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:00:58,217 INFO L87 Difference]: Start difference. First operand 592 states and 874 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:00:58,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:00:58,290 INFO L93 Difference]: Finished difference Result 919 states and 1331 transitions. [2024-11-28 04:00:58,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:00:58,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 169 [2024-11-28 04:00:58,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:00:58,297 INFO L225 Difference]: With dead ends: 919 [2024-11-28 04:00:58,299 INFO L226 Difference]: Without dead ends: 594 [2024-11-28 04:00:58,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:00:58,306 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 1 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:00:58,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1742 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:00:58,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-28 04:00:58,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 593. [2024-11-28 04:00:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 440 states have (on average 1.4954545454545454) internal successors, (658), 459 states have internal predecessors, (658), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-28 04:00:58,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 875 transitions. [2024-11-28 04:00:58,364 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 875 transitions. Word has length 169 [2024-11-28 04:00:58,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:00:58,365 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 875 transitions. [2024-11-28 04:00:58,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:00:58,366 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 875 transitions. [2024-11-28 04:00:58,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-28 04:00:58,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:00:58,374 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:00:58,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:00:58,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:00:58,579 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:00:58,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:00:58,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1419303667, now seen corresponding path program 1 times [2024-11-28 04:00:58,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:00:58,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140360566] [2024-11-28 04:00:58,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:58,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-28 04:00:59,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:59,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140360566] [2024-11-28 04:00:59,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140360566] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:00:59,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168374790] [2024-11-28 04:00:59,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:59,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:00:59,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:00:59,044 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:00:59,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:00:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:59,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:00:59,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:00:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-28 04:00:59,747 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:00:59,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168374790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:00:59,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:00:59,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-28 04:00:59,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996552107] [2024-11-28 04:00:59,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:00:59,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:00:59,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:59,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:00:59,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:00:59,752 INFO L87 Difference]: Start difference. First operand 593 states and 875 transitions. Second operand has 7 states, 6 states have (on average 17.0) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-28 04:00:59,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:00:59,940 INFO L93 Difference]: Finished difference Result 1133 states and 1679 transitions. [2024-11-28 04:00:59,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:00:59,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.0) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 175 [2024-11-28 04:00:59,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:00:59,951 INFO L225 Difference]: With dead ends: 1133 [2024-11-28 04:00:59,952 INFO L226 Difference]: Without dead ends: 598 [2024-11-28 04:00:59,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:00:59,957 INFO L435 NwaCegarLoop]: 862 mSDtfsCounter, 4 mSDsluCounter, 4292 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5154 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:00:59,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5154 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:00:59,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2024-11-28 04:01:00,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 597. [2024-11-28 04:01:00,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 442 states have (on average 1.493212669683258) internal successors, (660), 462 states have internal predecessors, (660), 109 states have call successors, (109), 43 states have call predecessors, (109), 45 states have return successors, (112), 108 states have call predecessors, (112), 108 states have call successors, (112) [2024-11-28 04:01:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 881 transitions. [2024-11-28 04:01:00,022 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 881 transitions. Word has length 175 [2024-11-28 04:01:00,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:00,022 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 881 transitions. [2024-11-28 04:01:00,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.0) internal successors, (102), 7 states have internal predecessors, (102), 4 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-28 04:01:00,023 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 881 transitions. [2024-11-28 04:01:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 04:01:00,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:00,028 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:00,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:01:00,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-28 04:01:00,229 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:00,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:00,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2024779305, now seen corresponding path program 1 times [2024-11-28 04:01:00,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:00,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602231307] [2024-11-28 04:01:00,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:00,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:00,583 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-28 04:01:00,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:00,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602231307] [2024-11-28 04:01:00,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602231307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:00,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:00,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:01:00,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776591631] [2024-11-28 04:01:00,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:00,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:01:00,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:00,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:01:00,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:01:00,586 INFO L87 Difference]: Start difference. First operand 597 states and 881 transitions. Second operand has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-28 04:01:00,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:00,751 INFO L93 Difference]: Finished difference Result 1119 states and 1659 transitions. [2024-11-28 04:01:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:01:00,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 176 [2024-11-28 04:01:00,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:00,762 INFO L225 Difference]: With dead ends: 1119 [2024-11-28 04:01:00,762 INFO L226 Difference]: Without dead ends: 600 [2024-11-28 04:01:00,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:01:00,765 INFO L435 NwaCegarLoop]: 862 mSDtfsCounter, 4 mSDsluCounter, 4292 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5154 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:00,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5154 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:01:00,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-11-28 04:01:00,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 599. [2024-11-28 04:01:00,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 443 states have (on average 1.492099322799097) internal successors, (661), 463 states have internal predecessors, (661), 109 states have call successors, (109), 43 states have call predecessors, (109), 46 states have return successors, (113), 109 states have call predecessors, (113), 108 states have call successors, (113) [2024-11-28 04:01:00,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 883 transitions. [2024-11-28 04:01:00,807 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 883 transitions. Word has length 176 [2024-11-28 04:01:00,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:00,808 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 883 transitions. [2024-11-28 04:01:00,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.833333333333332) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-28 04:01:00,808 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 883 transitions. [2024-11-28 04:01:00,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-28 04:01:00,813 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:00,814 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:00,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:01:00,814 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:00,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:00,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1443093521, now seen corresponding path program 1 times [2024-11-28 04:01:00,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:00,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521594691] [2024-11-28 04:01:00,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:00,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-28 04:01:01,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:01,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521594691] [2024-11-28 04:01:01,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521594691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:01,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:01,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:01:01,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762164587] [2024-11-28 04:01:01,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:01,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:01:01,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:01,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:01:01,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:01:01,167 INFO L87 Difference]: Start difference. First operand 599 states and 883 transitions. Second operand has 7 states, 6 states have (on average 17.5) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-28 04:01:01,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:01,324 INFO L93 Difference]: Finished difference Result 1123 states and 1665 transitions. [2024-11-28 04:01:01,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:01:01,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.5) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 190 [2024-11-28 04:01:01,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:01,331 INFO L225 Difference]: With dead ends: 1123 [2024-11-28 04:01:01,331 INFO L226 Difference]: Without dead ends: 604 [2024-11-28 04:01:01,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:01:01,334 INFO L435 NwaCegarLoop]: 867 mSDtfsCounter, 2 mSDsluCounter, 4312 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5179 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:01,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5179 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:01:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-11-28 04:01:01,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 601. [2024-11-28 04:01:01,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 444 states have (on average 1.490990990990991) internal successors, (662), 465 states have internal predecessors, (662), 109 states have call successors, (109), 43 states have call predecessors, (109), 47 states have return successors, (116), 109 states have call predecessors, (116), 108 states have call successors, (116) [2024-11-28 04:01:01,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 887 transitions. [2024-11-28 04:01:01,367 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 887 transitions. Word has length 190 [2024-11-28 04:01:01,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:01,367 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 887 transitions. [2024-11-28 04:01:01,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.5) internal successors, (105), 7 states have internal predecessors, (105), 4 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-28 04:01:01,368 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 887 transitions. [2024-11-28 04:01:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-28 04:01:01,372 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:01,372 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:01,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:01:01,373 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:01,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:01,374 INFO L85 PathProgramCache]: Analyzing trace with hash 741251955, now seen corresponding path program 1 times [2024-11-28 04:01:01,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:01,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537752912] [2024-11-28 04:01:01,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:01,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:01,630 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-28 04:01:01,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:01,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537752912] [2024-11-28 04:01:01,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537752912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:01,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612246308] [2024-11-28 04:01:01,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:01,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:01,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:01,633 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:01,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:01:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:02,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:01:02,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-28 04:01:02,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:01:02,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612246308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:02,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:01:02,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 04:01:02,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006545513] [2024-11-28 04:01:02,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:02,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:02,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:02,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:02,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:01:02,447 INFO L87 Difference]: Start difference. First operand 601 states and 887 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-28 04:01:02,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:02,533 INFO L93 Difference]: Finished difference Result 1476 states and 2177 transitions. [2024-11-28 04:01:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:02,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 198 [2024-11-28 04:01:02,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:02,544 INFO L225 Difference]: With dead ends: 1476 [2024-11-28 04:01:02,544 INFO L226 Difference]: Without dead ends: 1159 [2024-11-28 04:01:02,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:01:02,548 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 764 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:02,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 1732 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:01:02,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-28 04:01:02,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1157. [2024-11-28 04:01:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 861 states have (on average 1.4994192799070847) internal successors, (1291), 900 states have internal predecessors, (1291), 202 states have call successors, (202), 85 states have call predecessors, (202), 93 states have return successors, (226), 202 states have call predecessors, (226), 200 states have call successors, (226) [2024-11-28 04:01:02,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1719 transitions. [2024-11-28 04:01:02,627 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1719 transitions. Word has length 198 [2024-11-28 04:01:02,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:02,628 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 1719 transitions. [2024-11-28 04:01:02,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-28 04:01:02,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1719 transitions. [2024-11-28 04:01:02,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-28 04:01:02,635 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:02,636 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:02,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:01:02,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:02,837 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:02,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:02,838 INFO L85 PathProgramCache]: Analyzing trace with hash -480452942, now seen corresponding path program 1 times [2024-11-28 04:01:02,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:02,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772886030] [2024-11-28 04:01:02,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:02,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 04:01:03,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:03,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772886030] [2024-11-28 04:01:03,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772886030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:03,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458039579] [2024-11-28 04:01:03,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:03,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:03,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:03,055 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:03,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:01:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:03,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:01:03,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 04:01:03,546 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 04:01:03,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458039579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:03,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:01:03,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 04:01:03,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004848346] [2024-11-28 04:01:03,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:03,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:01:03,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:03,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:01:03,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:01:03,717 INFO L87 Difference]: Start difference. First operand 1157 states and 1719 transitions. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-28 04:01:04,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:04,038 INFO L93 Difference]: Finished difference Result 2545 states and 3895 transitions. [2024-11-28 04:01:04,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:01:04,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 178 [2024-11-28 04:01:04,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:04,053 INFO L225 Difference]: With dead ends: 2545 [2024-11-28 04:01:04,054 INFO L226 Difference]: Without dead ends: 1913 [2024-11-28 04:01:04,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:01:04,058 INFO L435 NwaCegarLoop]: 898 mSDtfsCounter, 675 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:04,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 3216 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:01:04,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2024-11-28 04:01:04,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1865. [2024-11-28 04:01:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1865 states, 1467 states have (on average 1.5753237900477164) internal successors, (2311), 1518 states have internal predecessors, (2311), 304 states have call successors, (304), 85 states have call predecessors, (304), 93 states have return successors, (328), 304 states have call predecessors, (328), 302 states have call successors, (328) [2024-11-28 04:01:04,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 2943 transitions. [2024-11-28 04:01:04,193 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 2943 transitions. Word has length 178 [2024-11-28 04:01:04,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:04,194 INFO L471 AbstractCegarLoop]: Abstraction has 1865 states and 2943 transitions. [2024-11-28 04:01:04,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 2 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2024-11-28 04:01:04,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 2943 transitions. [2024-11-28 04:01:04,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-28 04:01:04,211 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:04,212 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:04,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:01:04,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8d0f643-3d60-4345-8f18-08dad3f59aac/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:04,416 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:04,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:04,417 INFO L85 PathProgramCache]: Analyzing trace with hash 2007848545, now seen corresponding path program 1 times [2024-11-28 04:01:04,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:04,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900213349] [2024-11-28 04:01:04,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:04,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-28 04:01:04,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:04,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900213349] [2024-11-28 04:01:04,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900213349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:04,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:04,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:04,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848647477] [2024-11-28 04:01:04,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:04,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:04,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:04,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:04,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:04,564 INFO L87 Difference]: Start difference. First operand 1865 states and 2943 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 04:01:04,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:04,699 INFO L93 Difference]: Finished difference Result 4077 states and 6515 transitions. [2024-11-28 04:01:04,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:04,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 197 [2024-11-28 04:01:04,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:04,721 INFO L225 Difference]: With dead ends: 4077 [2024-11-28 04:01:04,721 INFO L226 Difference]: Without dead ends: 2417 [2024-11-28 04:01:04,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:04,731 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 173 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:04,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1702 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:01:04,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2024-11-28 04:01:04,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 2401. [2024-11-28 04:01:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 1919 states have (on average 1.5898905680041688) internal successors, (3051), 1982 states have internal predecessors, (3051), 388 states have call successors, (388), 85 states have call predecessors, (388), 93 states have return successors, (412), 388 states have call predecessors, (412), 386 states have call successors, (412) [2024-11-28 04:01:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 3851 transitions. [2024-11-28 04:01:04,928 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 3851 transitions. Word has length 197 [2024-11-28 04:01:04,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:04,929 INFO L471 AbstractCegarLoop]: Abstraction has 2401 states and 3851 transitions. [2024-11-28 04:01:04,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 04:01:04,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 3851 transitions. [2024-11-28 04:01:04,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-28 04:01:04,947 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:04,947 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:04,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:01:04,948 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:04,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:04,949 INFO L85 PathProgramCache]: Analyzing trace with hash -695402801, now seen corresponding path program 1 times [2024-11-28 04:01:04,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:04,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099996559] [2024-11-28 04:01:04,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:04,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-28 04:01:05,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:05,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099996559] [2024-11-28 04:01:05,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099996559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:05,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:05,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:05,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225536437] [2024-11-28 04:01:05,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:05,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:05,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:05,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:05,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:05,086 INFO L87 Difference]: Start difference. First operand 2401 states and 3851 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 04:01:05,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:05,247 INFO L93 Difference]: Finished difference Result 5559 states and 9053 transitions. [2024-11-28 04:01:05,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:05,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 198 [2024-11-28 04:01:05,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:05,276 INFO L225 Difference]: With dead ends: 5559 [2024-11-28 04:01:05,276 INFO L226 Difference]: Without dead ends: 3405 [2024-11-28 04:01:05,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:05,324 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 171 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:05,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1741 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:01:05,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2024-11-28 04:01:05,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 3389. [2024-11-28 04:01:05,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3389 states, 2749 states have (on average 1.6096762459076028) internal successors, (4425), 2832 states have internal predecessors, (4425), 546 states have call successors, (546), 85 states have call predecessors, (546), 93 states have return successors, (570), 546 states have call predecessors, (570), 544 states have call successors, (570) [2024-11-28 04:01:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 5541 transitions. [2024-11-28 04:01:05,546 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 5541 transitions. Word has length 198 [2024-11-28 04:01:05,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:05,547 INFO L471 AbstractCegarLoop]: Abstraction has 3389 states and 5541 transitions. [2024-11-28 04:01:05,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 04:01:05,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 5541 transitions. [2024-11-28 04:01:05,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-28 04:01:05,573 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:05,573 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:05,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:01:05,574 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:05,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:05,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2086637805, now seen corresponding path program 1 times [2024-11-28 04:01:05,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:05,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61320151] [2024-11-28 04:01:05,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:05,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:05,693 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 04:01:05,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:05,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61320151] [2024-11-28 04:01:05,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61320151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:05,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:05,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:05,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520554731] [2024-11-28 04:01:05,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:05,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:05,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:05,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:05,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:05,696 INFO L87 Difference]: Start difference. First operand 3389 states and 5541 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:01:05,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:05,976 INFO L93 Difference]: Finished difference Result 8019 states and 13269 transitions. [2024-11-28 04:01:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:05,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 186 [2024-11-28 04:01:05,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:06,020 INFO L225 Difference]: With dead ends: 8019 [2024-11-28 04:01:06,021 INFO L226 Difference]: Without dead ends: 4999 [2024-11-28 04:01:06,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:06,037 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 169 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:06,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1749 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:01:06,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4999 states. [2024-11-28 04:01:06,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4999 to 4983. [2024-11-28 04:01:06,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4983 states, 4105 states have (on average 1.6241169305724725) internal successors, (6667), 4220 states have internal predecessors, (6667), 784 states have call successors, (784), 85 states have call predecessors, (784), 93 states have return successors, (808), 784 states have call predecessors, (808), 782 states have call successors, (808) [2024-11-28 04:01:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4983 states to 4983 states and 8259 transitions. [2024-11-28 04:01:06,411 INFO L78 Accepts]: Start accepts. Automaton has 4983 states and 8259 transitions. Word has length 186 [2024-11-28 04:01:06,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:06,412 INFO L471 AbstractCegarLoop]: Abstraction has 4983 states and 8259 transitions. [2024-11-28 04:01:06,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:01:06,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4983 states and 8259 transitions. [2024-11-28 04:01:06,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-28 04:01:06,445 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:06,445 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:06,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:01:06,445 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:06,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:06,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1007852106, now seen corresponding path program 1 times [2024-11-28 04:01:06,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:06,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858297555] [2024-11-28 04:01:06,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:06,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-28 04:01:06,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:06,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858297555] [2024-11-28 04:01:06,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858297555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:06,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:06,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:06,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678795325] [2024-11-28 04:01:06,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:06,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:06,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:06,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:06,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:06,595 INFO L87 Difference]: Start difference. First operand 4983 states and 8259 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 04:01:06,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:06,857 INFO L93 Difference]: Finished difference Result 11761 states and 19677 transitions. [2024-11-28 04:01:06,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:06,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 200 [2024-11-28 04:01:06,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:06,933 INFO L225 Difference]: With dead ends: 11761 [2024-11-28 04:01:06,933 INFO L226 Difference]: Without dead ends: 7453 [2024-11-28 04:01:06,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:06,951 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 167 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:06,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1743 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:01:06,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7453 states. [2024-11-28 04:01:07,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7453 to 7437. [2024-11-28 04:01:07,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7437 states, 6235 states have (on average 1.6354450681635926) internal successors, (10197), 6402 states have internal predecessors, (10197), 1108 states have call successors, (1108), 85 states have call predecessors, (1108), 93 states have return successors, (1132), 1108 states have call predecessors, (1132), 1106 states have call successors, (1132) [2024-11-28 04:01:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7437 states to 7437 states and 12437 transitions. [2024-11-28 04:01:07,452 INFO L78 Accepts]: Start accepts. Automaton has 7437 states and 12437 transitions. Word has length 200 [2024-11-28 04:01:07,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:07,453 INFO L471 AbstractCegarLoop]: Abstraction has 7437 states and 12437 transitions. [2024-11-28 04:01:07,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 04:01:07,453 INFO L276 IsEmpty]: Start isEmpty. Operand 7437 states and 12437 transitions. [2024-11-28 04:01:07,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 04:01:07,501 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:07,502 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:07,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:01:07,502 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:07,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:07,503 INFO L85 PathProgramCache]: Analyzing trace with hash -304963509, now seen corresponding path program 1 times [2024-11-28 04:01:07,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:07,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338927005] [2024-11-28 04:01:07,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:07,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 04:01:07,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:07,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338927005] [2024-11-28 04:01:07,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338927005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:07,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:07,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:07,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813010526] [2024-11-28 04:01:07,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:07,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:07,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:07,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:07,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:07,621 INFO L87 Difference]: Start difference. First operand 7437 states and 12437 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:01:08,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:08,093 INFO L93 Difference]: Finished difference Result 17673 states and 29799 transitions. [2024-11-28 04:01:08,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:08,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 188 [2024-11-28 04:01:08,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:08,189 INFO L225 Difference]: With dead ends: 17673 [2024-11-28 04:01:08,189 INFO L226 Difference]: Without dead ends: 11415 [2024-11-28 04:01:08,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:08,216 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 165 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:08,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 1743 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:01:08,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11415 states. [2024-11-28 04:01:08,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11415 to 11399. [2024-11-28 04:01:08,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11399 states, 9707 states have (on average 1.6438652518800865) internal successors, (15957), 9962 states have internal predecessors, (15957), 1598 states have call successors, (1598), 85 states have call predecessors, (1598), 93 states have return successors, (1622), 1598 states have call predecessors, (1622), 1596 states have call successors, (1622) [2024-11-28 04:01:08,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11399 states to 11399 states and 19177 transitions. [2024-11-28 04:01:09,005 INFO L78 Accepts]: Start accepts. Automaton has 11399 states and 19177 transitions. Word has length 188 [2024-11-28 04:01:09,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:09,006 INFO L471 AbstractCegarLoop]: Abstraction has 11399 states and 19177 transitions. [2024-11-28 04:01:09,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:01:09,007 INFO L276 IsEmpty]: Start isEmpty. Operand 11399 states and 19177 transitions. [2024-11-28 04:01:09,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-28 04:01:09,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:09,091 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:09,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:01:09,092 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:09,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:09,093 INFO L85 PathProgramCache]: Analyzing trace with hash -134490677, now seen corresponding path program 1 times [2024-11-28 04:01:09,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:09,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658910035] [2024-11-28 04:01:09,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:09,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-28 04:01:09,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:09,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658910035] [2024-11-28 04:01:09,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658910035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:09,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:09,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:09,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406552278] [2024-11-28 04:01:09,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:09,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:09,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:09,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:09,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:09,228 INFO L87 Difference]: Start difference. First operand 11399 states and 19177 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 04:01:09,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:09,780 INFO L93 Difference]: Finished difference Result 27505 states and 46635 transitions. [2024-11-28 04:01:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:09,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 202 [2024-11-28 04:01:09,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:09,881 INFO L225 Difference]: With dead ends: 27505 [2024-11-28 04:01:09,882 INFO L226 Difference]: Without dead ends: 18055 [2024-11-28 04:01:09,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:09,921 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 163 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:09,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 1745 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:01:09,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18055 states. [2024-11-28 04:01:10,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18055 to 18039. [2024-11-28 04:01:10,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18039 states, 15361 states have (on average 1.6459214894863616) internal successors, (25283), 15772 states have internal predecessors, (25283), 2584 states have call successors, (2584), 85 states have call predecessors, (2584), 93 states have return successors, (2608), 2584 states have call predecessors, (2608), 2582 states have call successors, (2608) [2024-11-28 04:01:10,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18039 states to 18039 states and 30475 transitions. [2024-11-28 04:01:10,940 INFO L78 Accepts]: Start accepts. Automaton has 18039 states and 30475 transitions. Word has length 202 [2024-11-28 04:01:10,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:10,941 INFO L471 AbstractCegarLoop]: Abstraction has 18039 states and 30475 transitions. [2024-11-28 04:01:10,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 04:01:10,943 INFO L276 IsEmpty]: Start isEmpty. Operand 18039 states and 30475 transitions. [2024-11-28 04:01:11,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-28 04:01:11,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:11,044 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:11,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:01:11,046 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:11,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:11,046 INFO L85 PathProgramCache]: Analyzing trace with hash -411898240, now seen corresponding path program 1 times [2024-11-28 04:01:11,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:11,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184128508] [2024-11-28 04:01:11,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:11,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 04:01:11,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:11,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184128508] [2024-11-28 04:01:11,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184128508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:11,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:11,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:11,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333935611] [2024-11-28 04:01:11,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:11,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:11,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:11,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:11,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:11,162 INFO L87 Difference]: Start difference. First operand 18039 states and 30475 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:01:12,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:12,205 INFO L93 Difference]: Finished difference Result 45145 states and 76823 transitions. [2024-11-28 04:01:12,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:12,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 190 [2024-11-28 04:01:12,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:12,387 INFO L225 Difference]: With dead ends: 45145 [2024-11-28 04:01:12,387 INFO L226 Difference]: Without dead ends: 30015 [2024-11-28 04:01:12,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:12,454 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 161 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:12,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1753 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:01:12,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30015 states. [2024-11-28 04:01:14,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30015 to 29999. [2024-11-28 04:01:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29999 states, 25677 states have (on average 1.6490633641001675) internal successors, (42343), 26376 states have internal predecessors, (42343), 4228 states have call successors, (4228), 85 states have call predecessors, (4228), 93 states have return successors, (4252), 4228 states have call predecessors, (4252), 4226 states have call successors, (4252) [2024-11-28 04:01:14,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29999 states to 29999 states and 50823 transitions. [2024-11-28 04:01:14,222 INFO L78 Accepts]: Start accepts. Automaton has 29999 states and 50823 transitions. Word has length 190 [2024-11-28 04:01:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:14,222 INFO L471 AbstractCegarLoop]: Abstraction has 29999 states and 50823 transitions. [2024-11-28 04:01:14,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:01:14,223 INFO L276 IsEmpty]: Start isEmpty. Operand 29999 states and 50823 transitions. [2024-11-28 04:01:14,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-28 04:01:14,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:14,358 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:14,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:01:14,358 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:14,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:14,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1614306700, now seen corresponding path program 1 times [2024-11-28 04:01:14,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:14,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168596506] [2024-11-28 04:01:14,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:14,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:14,485 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 04:01:14,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:14,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168596506] [2024-11-28 04:01:14,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168596506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:14,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:14,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:14,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774873198] [2024-11-28 04:01:14,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:14,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:14,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:14,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:14,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:14,488 INFO L87 Difference]: Start difference. First operand 29999 states and 50823 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:01:15,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:15,664 INFO L93 Difference]: Finished difference Result 72287 states and 122371 transitions. [2024-11-28 04:01:15,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:15,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 191 [2024-11-28 04:01:15,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:15,914 INFO L225 Difference]: With dead ends: 72287 [2024-11-28 04:01:15,915 INFO L226 Difference]: Without dead ends: 47421 [2024-11-28 04:01:15,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:15,992 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 159 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:15,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1726 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:01:16,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47421 states. [2024-11-28 04:01:18,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47421 to 47405. [2024-11-28 04:01:18,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47405 states, 40677 states have (on average 1.6321016790815448) internal successors, (66389), 41924 states have internal predecessors, (66389), 6634 states have call successors, (6634), 85 states have call predecessors, (6634), 93 states have return successors, (6658), 6634 states have call predecessors, (6658), 6632 states have call successors, (6658) [2024-11-28 04:01:18,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47405 states to 47405 states and 79681 transitions. [2024-11-28 04:01:18,881 INFO L78 Accepts]: Start accepts. Automaton has 47405 states and 79681 transitions. Word has length 191 [2024-11-28 04:01:18,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:18,882 INFO L471 AbstractCegarLoop]: Abstraction has 47405 states and 79681 transitions. [2024-11-28 04:01:18,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:01:18,882 INFO L276 IsEmpty]: Start isEmpty. Operand 47405 states and 79681 transitions. [2024-11-28 04:01:19,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-28 04:01:19,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:19,156 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:19,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:01:19,156 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:19,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:19,157 INFO L85 PathProgramCache]: Analyzing trace with hash 351298200, now seen corresponding path program 1 times [2024-11-28 04:01:19,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:19,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119885211] [2024-11-28 04:01:19,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:19,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 04:01:19,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:19,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119885211] [2024-11-28 04:01:19,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119885211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:19,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:19,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:19,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443710103] [2024-11-28 04:01:19,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:19,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:19,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:19,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:19,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:19,590 INFO L87 Difference]: Start difference. First operand 47405 states and 79681 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:01:22,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:22,029 INFO L93 Difference]: Finished difference Result 125113 states and 210811 transitions. [2024-11-28 04:01:22,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:22,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 192 [2024-11-28 04:01:22,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:22,405 INFO L225 Difference]: With dead ends: 125113 [2024-11-28 04:01:22,406 INFO L226 Difference]: Without dead ends: 84407 [2024-11-28 04:01:22,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:22,502 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 157 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:22,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 1746 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:01:22,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84407 states. [2024-11-28 04:01:26,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84407 to 84391. [2024-11-28 04:01:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84391 states, 72763 states have (on average 1.6274342729134312) internal successors, (118417), 74542 states have internal predecessors, (118417), 11534 states have call successors, (11534), 85 states have call predecessors, (11534), 93 states have return successors, (11558), 11534 states have call predecessors, (11558), 11532 states have call successors, (11558) [2024-11-28 04:01:26,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84391 states to 84391 states and 141509 transitions. [2024-11-28 04:01:26,667 INFO L78 Accepts]: Start accepts. Automaton has 84391 states and 141509 transitions. Word has length 192 [2024-11-28 04:01:26,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:26,668 INFO L471 AbstractCegarLoop]: Abstraction has 84391 states and 141509 transitions. [2024-11-28 04:01:26,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:01:26,668 INFO L276 IsEmpty]: Start isEmpty. Operand 84391 states and 141509 transitions. [2024-11-28 04:01:27,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-28 04:01:27,345 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:27,346 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:27,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:01:27,346 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:27,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:27,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2048539961, now seen corresponding path program 1 times [2024-11-28 04:01:27,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:27,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026729364] [2024-11-28 04:01:27,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:27,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 04:01:27,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:27,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026729364] [2024-11-28 04:01:27,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026729364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:27,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:27,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:27,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061755265] [2024-11-28 04:01:27,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:27,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:27,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:27,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:27,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:27,486 INFO L87 Difference]: Start difference. First operand 84391 states and 141509 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:01:31,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:31,364 INFO L93 Difference]: Finished difference Result 228767 states and 384905 transitions. [2024-11-28 04:01:31,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:31,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 193 [2024-11-28 04:01:31,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:32,016 INFO L225 Difference]: With dead ends: 228767 [2024-11-28 04:01:32,016 INFO L226 Difference]: Without dead ends: 153353 [2024-11-28 04:01:32,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:32,191 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 155 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:32,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 1760 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:01:32,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153353 states. [2024-11-28 04:01:37,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153353 to 153337. [2024-11-28 04:01:37,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153337 states, 132683 states have (on average 1.6261389929380554) internal successors, (215761), 136040 states have internal predecessors, (215761), 20560 states have call successors, (20560), 85 states have call predecessors, (20560), 93 states have return successors, (20584), 20560 states have call predecessors, (20584), 20558 states have call successors, (20584) [2024-11-28 04:01:38,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153337 states to 153337 states and 256905 transitions. [2024-11-28 04:01:38,274 INFO L78 Accepts]: Start accepts. Automaton has 153337 states and 256905 transitions. Word has length 193 [2024-11-28 04:01:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:38,274 INFO L471 AbstractCegarLoop]: Abstraction has 153337 states and 256905 transitions. [2024-11-28 04:01:38,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:01:38,275 INFO L276 IsEmpty]: Start isEmpty. Operand 153337 states and 256905 transitions. [2024-11-28 04:01:38,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-28 04:01:38,744 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:38,745 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:38,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 04:01:38,745 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:38,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:38,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1114657426, now seen corresponding path program 1 times [2024-11-28 04:01:38,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:38,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609450298] [2024-11-28 04:01:38,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:38,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 04:01:38,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:38,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609450298] [2024-11-28 04:01:38,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609450298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:38,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:38,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:01:38,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597268106] [2024-11-28 04:01:38,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:38,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:01:38,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:38,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:01:38,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:38,878 INFO L87 Difference]: Start difference. First operand 153337 states and 256905 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-28 04:01:43,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:43,877 INFO L93 Difference]: Finished difference Result 286659 states and 480177 transitions. [2024-11-28 04:01:43,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:01:43,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 194 [2024-11-28 04:01:43,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:44,833 INFO L225 Difference]: With dead ends: 286659 [2024-11-28 04:01:44,833 INFO L226 Difference]: Without dead ends: 286027 [2024-11-28 04:01:44,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:01:44,901 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 148 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:44,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1751 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:01:45,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286027 states.