./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_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_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1 --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 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:51:59,157 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:51:59,207 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:51:59,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:51:59,211 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:51:59,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:51:59,229 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:51:59,229 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:51:59,230 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:51:59,230 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:51:59,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:51:59,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:51:59,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:51:59,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:51:59,231 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:51:59,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:51:59,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:51:59,231 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:51:59,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:51:59,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:51:59,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:51:59,231 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:51:59,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:51:59,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:51:59,232 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:51:59,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:51:59,232 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:51:59,232 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:51:59,232 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:51:59,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:51:59,232 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:51:59,232 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:51:59,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:51:59,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:51:59,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:51:59,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:51:59,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:51:59,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:51:59,233 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:51:59,233 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:51:59,233 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:51:59,233 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:51:59,234 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:51:59,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:51:59,234 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:51:59,234 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:51:59,234 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:51:59,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:51:59,234 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_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1 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 -> 1c5af94617941f44648ac9498189d5e73562b4cbf6ae0ea00b10262137b50bb0 [2024-12-02 14:51:59,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:51:59,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:51:59,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:51:59,438 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:51:59,438 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:51:59,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2024-12-02 14:52:02,037 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/data/e4bad7855/045c9f73eb3b4ee6a1204adda3f865db/FLAG3084ecef1 [2024-12-02 14:52:02,343 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:52:02,344 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c [2024-12-02 14:52:02,360 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/data/e4bad7855/045c9f73eb3b4ee6a1204adda3f865db/FLAG3084ecef1 [2024-12-02 14:52:02,616 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/data/e4bad7855/045c9f73eb3b4ee6a1204adda3f865db [2024-12-02 14:52:02,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:52:02,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:52:02,620 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:52:02,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:52:02,624 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:52:02,624 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:52:02" (1/1) ... [2024-12-02 14:52:02,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a0fc9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:52:02, skipping insertion in model container [2024-12-02 14:52:02,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:52:02" (1/1) ... [2024-12-02 14:52:02,669 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:52:03,117 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_5e71b3d1-4519-4e66-9064-83f8da1acad7/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2024-12-02 14:52:03,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:52:03,175 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:52:03,183 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2024-12-02 14:52:03,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [168] [2024-12-02 14:52:03,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [754] [2024-12-02 14:52:03,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1126] [2024-12-02 14:52:03,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1492] [2024-12-02 14:52:03,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1698] [2024-12-02 14:52:03,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2095] [2024-12-02 14:52:03,185 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2112] [2024-12-02 14:52:03,186 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2378] [2024-12-02 14:52:03,186 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [2387] [2024-12-02 14:52:03,186 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [3447] [2024-12-02 14:52:03,260 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_5e71b3d1-4519-4e66-9064-83f8da1acad7/sv-benchmarks/c/product-lines/email_spec11_productSimulator.cil.c[48047,48060] [2024-12-02 14:52:03,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:52:03,315 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:52:03,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:52:03 WrapperNode [2024-12-02 14:52:03,315 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:52:03,316 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:52:03,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:52:03,316 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:52:03,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:52:03" (1/1) ... [2024-12-02 14:52:03,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:52:03" (1/1) ... [2024-12-02 14:52:03,382 INFO L138 Inliner]: procedures = 151, calls = 262, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1310 [2024-12-02 14:52:03,382 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:52:03,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:52:03,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:52:03,383 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:52:03,392 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:52:03" (1/1) ... [2024-12-02 14:52:03,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:52:03" (1/1) ... [2024-12-02 14:52:03,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:52:03" (1/1) ... [2024-12-02 14:52:03,428 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]. [2024-12-02 14:52:03,429 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:52:03" (1/1) ... [2024-12-02 14:52:03,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:52:03" (1/1) ... [2024-12-02 14:52:03,447 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:52:03" (1/1) ... [2024-12-02 14:52:03,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:52:03" (1/1) ... [2024-12-02 14:52:03,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:52:03" (1/1) ... [2024-12-02 14:52:03,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:52:03" (1/1) ... [2024-12-02 14:52:03,468 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:52:03" (1/1) ... [2024-12-02 14:52:03,477 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:52:03,477 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:52:03,478 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:52:03,478 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:52:03,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:52:03" (1/1) ... [2024-12-02 14:52:03,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:52:03,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:52:03,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:52:03,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:52:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-12-02 14:52:03,539 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-12-02 14:52:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2024-12-02 14:52:03,539 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2024-12-02 14:52:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2024-12-02 14:52:03,539 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2024-12-02 14:52:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2024-12-02 14:52:03,539 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2024-12-02 14:52:03,539 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-12-02 14:52:03,539 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-12-02 14:52:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2024-12-02 14:52:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2024-12-02 14:52:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-12-02 14:52:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-12-02 14:52:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2024-12-02 14:52:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2024-12-02 14:52:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-12-02 14:52:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-12-02 14:52:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2024-12-02 14:52:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2024-12-02 14:52:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-12-02 14:52:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-12-02 14:52:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-12-02 14:52:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-12-02 14:52:03,540 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-12-02 14:52:03,540 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-12-02 14:52:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2024-12-02 14:52:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2024-12-02 14:52:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2024-12-02 14:52:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2024-12-02 14:52:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-12-02 14:52:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-12-02 14:52:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-12-02 14:52:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-12-02 14:52:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-12-02 14:52:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-12-02 14:52:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2024-12-02 14:52:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2024-12-02 14:52:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-12-02 14:52:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-12-02 14:52:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2024-12-02 14:52:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2024-12-02 14:52:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-12-02 14:52:03,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-12-02 14:52:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2024-12-02 14:52:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2024-12-02 14:52:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:52:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-12-02 14:52:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-12-02 14:52:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-12-02 14:52:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-12-02 14:52:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2024-12-02 14:52:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2024-12-02 14:52:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2024-12-02 14:52:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2024-12-02 14:52:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2024-12-02 14:52:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2024-12-02 14:52:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2024-12-02 14:52:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2024-12-02 14:52:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-12-02 14:52:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-12-02 14:52:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-12-02 14:52:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-12-02 14:52:03,542 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-12-02 14:52:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-12-02 14:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-12-02 14:52:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-12-02 14:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-12-02 14:52:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-12-02 14:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-12-02 14:52:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-12-02 14:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2024-12-02 14:52:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2024-12-02 14:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2024-12-02 14:52:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2024-12-02 14:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-12-02 14:52:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-12-02 14:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-12-02 14:52:03,543 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-12-02 14:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 14:52:03,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 14:52:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 14:52:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-12-02 14:52:03,544 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-12-02 14:52:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2024-12-02 14:52:03,544 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2024-12-02 14:52:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2024-12-02 14:52:03,544 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2024-12-02 14:52:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2024-12-02 14:52:03,544 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2024-12-02 14:52:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:52:03,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:52:03,736 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:52:03,738 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:52:04,907 INFO L? ?]: Removed 626 outVars from TransFormulas that were not future-live. [2024-12-02 14:52:04,907 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:52:04,930 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:52:04,930 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:52:04,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:52:04 BoogieIcfgContainer [2024-12-02 14:52:04,931 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:52:04,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:52:04,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:52:04,938 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:52:04,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:52:02" (1/3) ... [2024-12-02 14:52:04,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f7b0e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:52:04, skipping insertion in model container [2024-12-02 14:52:04,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:52:03" (2/3) ... [2024-12-02 14:52:04,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f7b0e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:52:04, skipping insertion in model container [2024-12-02 14:52:04,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:52:04" (3/3) ... [2024-12-02 14:52:04,941 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec11_productSimulator.cil.c [2024-12-02 14:52:04,953 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:52:04,955 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec11_productSimulator.cil.c that has 44 procedures, 599 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:52:05,026 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:52:05,038 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;@14502756, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:52:05,039 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:52:05,044 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) [2024-12-02 14:52:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 14:52:05,063 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:05,064 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:05,064 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:05,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:05,068 INFO L85 PathProgramCache]: Analyzing trace with hash 506666209, now seen corresponding path program 1 times [2024-12-02 14:52:05,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:05,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861599328] [2024-12-02 14:52:05,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:05,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 14:52:05,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:05,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861599328] [2024-12-02 14:52:05,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861599328] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:05,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:05,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 14:52:05,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249408833] [2024-12-02 14:52:05,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:05,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:52:05,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:05,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:52:05,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:52:05,472 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 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:05,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:05,549 INFO L93 Difference]: Finished difference Result 930 states and 1372 transitions. [2024-12-02 14:52:05,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:52:05,551 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 156 [2024-12-02 14:52:05,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:05,565 INFO L225 Difference]: With dead ends: 930 [2024-12-02 14:52:05,566 INFO L226 Difference]: Without dead ends: 592 [2024-12-02 14:52:05,572 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 [2024-12-02 14:52:05,575 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 [2024-12-02 14:52:05,575 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] [2024-12-02 14:52:05,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-12-02 14:52:05,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2024-12-02 14:52:05,645 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) [2024-12-02 14:52:05,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 881 transitions. [2024-12-02 14:52:05,657 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 881 transitions. Word has length 156 [2024-12-02 14:52:05,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:05,659 INFO L471 AbstractCegarLoop]: Abstraction has 592 states and 881 transitions. [2024-12-02 14:52:05,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:05,659 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 881 transitions. [2024-12-02 14:52:05,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 14:52:05,667 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:05,667 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:05,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 14:52:05,668 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:05,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:05,668 INFO L85 PathProgramCache]: Analyzing trace with hash -931494169, now seen corresponding path program 1 times [2024-12-02 14:52:05,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:05,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139827008] [2024-12-02 14:52:05,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:05,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 14:52:06,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:06,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139827008] [2024-12-02 14:52:06,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139827008] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:06,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:06,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:52:06,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691052484] [2024-12-02 14:52:06,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:06,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:52:06,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:06,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:52:06,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:52:06,081 INFO L87 Difference]: Start difference. First operand 592 states and 881 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:06,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:06,173 INFO L93 Difference]: Finished difference Result 1148 states and 1706 transitions. [2024-12-02 14:52:06,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:52:06,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 156 [2024-12-02 14:52:06,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:06,179 INFO L225 Difference]: With dead ends: 1148 [2024-12-02 14:52:06,179 INFO L226 Difference]: Without dead ends: 592 [2024-12-02 14:52:06,181 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 [2024-12-02 14:52:06,182 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, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:52:06,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3504 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:52:06,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-12-02 14:52:06,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2024-12-02 14:52:06,209 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) [2024-12-02 14:52:06,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 874 transitions. [2024-12-02 14:52:06,215 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 874 transitions. Word has length 156 [2024-12-02 14:52:06,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:06,216 INFO L471 AbstractCegarLoop]: Abstraction has 592 states and 874 transitions. [2024-12-02 14:52:06,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:06,216 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 874 transitions. [2024-12-02 14:52:06,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 14:52:06,221 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:06,221 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:06,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:52:06,221 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:06,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:06,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1567221445, now seen corresponding path program 1 times [2024-12-02 14:52:06,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:06,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277043784] [2024-12-02 14:52:06,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:06,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-12-02 14:52:06,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:06,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277043784] [2024-12-02 14:52:06,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277043784] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:52:06,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714802835] [2024-12-02 14:52:06,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:06,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:52:06,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:52:06,604 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:52:06,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:52:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:07,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 14:52:07,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:52:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 14:52:07,081 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:52:07,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714802835] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:07,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:52:07,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-12-02 14:52:07,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473781878] [2024-12-02 14:52:07,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:07,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:52:07,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:07,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:52:07,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:52:07,083 INFO L87 Difference]: Start difference. First operand 592 states and 874 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:07,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:07,115 INFO L93 Difference]: Finished difference Result 919 states and 1331 transitions. [2024-12-02 14:52:07,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:52:07,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 161 [2024-12-02 14:52:07,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:07,119 INFO L225 Difference]: With dead ends: 919 [2024-12-02 14:52:07,119 INFO L226 Difference]: Without dead ends: 594 [2024-12-02 14:52:07,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:52:07,121 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 [2024-12-02 14:52:07,121 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] [2024-12-02 14:52:07,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-12-02 14:52:07,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 593. [2024-12-02 14:52:07,138 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) [2024-12-02 14:52:07,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 875 transitions. [2024-12-02 14:52:07,142 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 875 transitions. Word has length 161 [2024-12-02 14:52:07,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:07,142 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 875 transitions. [2024-12-02 14:52:07,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:07,142 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 875 transitions. [2024-12-02 14:52:07,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-12-02 14:52:07,145 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:07,146 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:07,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:52:07,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:52:07,346 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:07,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:07,347 INFO L85 PathProgramCache]: Analyzing trace with hash -929036942, now seen corresponding path program 1 times [2024-12-02 14:52:07,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:07,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103347723] [2024-12-02 14:52:07,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:07,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-12-02 14:52:07,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:07,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103347723] [2024-12-02 14:52:07,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103347723] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:52:07,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926254934] [2024-12-02 14:52:07,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:07,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:52:07,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:52:07,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:52:07,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:52:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:08,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 14:52:08,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:52:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-12-02 14:52:08,241 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:52:08,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926254934] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:08,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:52:08,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-12-02 14:52:08,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604462678] [2024-12-02 14:52:08,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:08,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:52:08,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:08,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:52:08,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:52:08,244 INFO L87 Difference]: Start difference. First operand 593 states and 875 transitions. Second operand has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 7 states have internal predecessors, (100), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2024-12-02 14:52:08,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:08,375 INFO L93 Difference]: Finished difference Result 1133 states and 1679 transitions. [2024-12-02 14:52:08,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:52:08,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 7 states have internal predecessors, (100), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 167 [2024-12-02 14:52:08,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:08,380 INFO L225 Difference]: With dead ends: 1133 [2024-12-02 14:52:08,380 INFO L226 Difference]: Without dead ends: 598 [2024-12-02 14:52:08,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:52:08,383 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 [2024-12-02 14:52:08,383 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] [2024-12-02 14:52:08,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2024-12-02 14:52:08,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 597. [2024-12-02 14:52:08,407 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) [2024-12-02 14:52:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 881 transitions. [2024-12-02 14:52:08,412 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 881 transitions. Word has length 167 [2024-12-02 14:52:08,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:08,413 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 881 transitions. [2024-12-02 14:52:08,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.666666666666668) internal successors, (100), 7 states have internal predecessors, (100), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2024-12-02 14:52:08,413 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 881 transitions. [2024-12-02 14:52:08,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 14:52:08,417 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:08,417 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:08,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 14:52:08,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:52:08,618 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:08,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:08,619 INFO L85 PathProgramCache]: Analyzing trace with hash 360579158, now seen corresponding path program 1 times [2024-12-02 14:52:08,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:08,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52063343] [2024-12-02 14:52:08,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:08,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-12-02 14:52:08,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:08,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52063343] [2024-12-02 14:52:08,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52063343] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:08,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:08,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:52:08,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707913756] [2024-12-02 14:52:08,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:08,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:52:08,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:08,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:52:08,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:52:08,917 INFO L87 Difference]: Start difference. First operand 597 states and 881 transitions. Second operand has 7 states, 6 states have (on average 16.5) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2024-12-02 14:52:09,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:09,030 INFO L93 Difference]: Finished difference Result 1119 states and 1659 transitions. [2024-12-02 14:52:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:52:09,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.5) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 168 [2024-12-02 14:52:09,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:09,036 INFO L225 Difference]: With dead ends: 1119 [2024-12-02 14:52:09,036 INFO L226 Difference]: Without dead ends: 600 [2024-12-02 14:52:09,038 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 [2024-12-02 14:52:09,038 INFO L435 NwaCegarLoop]: 862 mSDtfsCounter, 4 mSDsluCounter, 4292 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2024-12-02 14:52:09,039 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] [2024-12-02 14:52:09,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-12-02 14:52:09,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 599. [2024-12-02 14:52:09,059 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) [2024-12-02 14:52:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 883 transitions. [2024-12-02 14:52:09,064 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 883 transitions. Word has length 168 [2024-12-02 14:52:09,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:09,065 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 883 transitions. [2024-12-02 14:52:09,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.5) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2024-12-02 14:52:09,065 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 883 transitions. [2024-12-02 14:52:09,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-12-02 14:52:09,068 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:09,069 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:09,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:52:09,069 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:09,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:09,069 INFO L85 PathProgramCache]: Analyzing trace with hash 942256812, now seen corresponding path program 2 times [2024-12-02 14:52:09,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:09,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462575094] [2024-12-02 14:52:09,070 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:52:09,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:09,105 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 14:52:09,105 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:52:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-12-02 14:52:09,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:09,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462575094] [2024-12-02 14:52:09,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462575094] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:09,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:09,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:52:09,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247088455] [2024-12-02 14:52:09,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:09,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:52:09,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:09,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:52:09,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:52:09,196 INFO L87 Difference]: Start difference. First operand 599 states and 883 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 14:52:09,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:09,283 INFO L93 Difference]: Finished difference Result 1226 states and 1849 transitions. [2024-12-02 14:52:09,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:52:09,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 169 [2024-12-02 14:52:09,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:09,290 INFO L225 Difference]: With dead ends: 1226 [2024-12-02 14:52:09,290 INFO L226 Difference]: Without dead ends: 909 [2024-12-02 14:52:09,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:52:09,293 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 813 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:52:09,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 3106 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:52:09,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2024-12-02 14:52:09,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 909. [2024-12-02 14:52:09,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 694 states have (on average 1.5489913544668588) internal successors, (1075), 722 states have internal predecessors, (1075), 151 states have call successors, (151), 65 states have call predecessors, (151), 63 states have return successors, (155), 141 states have call predecessors, (155), 150 states have call successors, (155) [2024-12-02 14:52:09,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1381 transitions. [2024-12-02 14:52:09,339 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1381 transitions. Word has length 169 [2024-12-02 14:52:09,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:09,340 INFO L471 AbstractCegarLoop]: Abstraction has 909 states and 1381 transitions. [2024-12-02 14:52:09,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 14:52:09,340 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1381 transitions. [2024-12-02 14:52:09,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-02 14:52:09,354 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:09,354 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:09,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:52:09,354 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:09,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:09,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1540637365, now seen corresponding path program 1 times [2024-12-02 14:52:09,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:09,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396564321] [2024-12-02 14:52:09,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:09,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-12-02 14:52:09,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:09,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396564321] [2024-12-02 14:52:09,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396564321] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:09,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:09,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:52:09,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563280513] [2024-12-02 14:52:09,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:09,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:52:09,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:09,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:52:09,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:52:09,608 INFO L87 Difference]: Start difference. First operand 909 states and 1381 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, (29), 2 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2024-12-02 14:52:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:09,746 INFO L93 Difference]: Finished difference Result 1743 states and 2661 transitions. [2024-12-02 14:52:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:52:09,746 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, (29), 2 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 170 [2024-12-02 14:52:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:09,753 INFO L225 Difference]: With dead ends: 1743 [2024-12-02 14:52:09,753 INFO L226 Difference]: Without dead ends: 914 [2024-12-02 14:52:09,756 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 [2024-12-02 14:52:09,756 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 [2024-12-02 14:52:09,756 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] [2024-12-02 14:52:09,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2024-12-02 14:52:09,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 911. [2024-12-02 14:52:09,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 695 states have (on average 1.548201438848921) internal successors, (1076), 724 states have internal predecessors, (1076), 151 states have call successors, (151), 65 states have call predecessors, (151), 64 states have return successors, (158), 141 states have call predecessors, (158), 150 states have call successors, (158) [2024-12-02 14:52:09,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1385 transitions. [2024-12-02 14:52:09,803 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1385 transitions. Word has length 170 [2024-12-02 14:52:09,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:09,804 INFO L471 AbstractCegarLoop]: Abstraction has 911 states and 1385 transitions. [2024-12-02 14:52:09,804 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, (29), 2 states have call predecessors, (29), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2024-12-02 14:52:09,804 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1385 transitions. [2024-12-02 14:52:09,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 14:52:09,809 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:09,809 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:09,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:52:09,809 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:09,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:09,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1426059824, now seen corresponding path program 1 times [2024-12-02 14:52:09,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:09,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031981907] [2024-12-02 14:52:09,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:09,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:52:09,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:09,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031981907] [2024-12-02 14:52:09,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031981907] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:52:09,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633098647] [2024-12-02 14:52:09,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:09,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:52:09,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:52:09,971 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:52:09,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:52:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:10,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:52:10,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:52:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:52:10,452 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:52:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:52:10,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633098647] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:52:10,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:52:10,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-12-02 14:52:10,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869301533] [2024-12-02 14:52:10,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:52:10,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:52:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:10,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:52:10,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:52:10,587 INFO L87 Difference]: Start difference. First operand 911 states and 1385 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 14:52:10,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:10,791 INFO L93 Difference]: Finished difference Result 1977 states and 3083 transitions. [2024-12-02 14:52:10,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:52:10,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 171 [2024-12-02 14:52:10,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:10,800 INFO L225 Difference]: With dead ends: 1977 [2024-12-02 14:52:10,800 INFO L226 Difference]: Without dead ends: 1533 [2024-12-02 14:52:10,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:52:10,802 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 674 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:52:10,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 3070 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:52:10,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2024-12-02 14:52:10,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1505. [2024-12-02 14:52:10,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1204 states have (on average 1.6029900332225913) internal successors, (1930), 1243 states have internal predecessors, (1930), 236 states have call successors, (236), 65 states have call predecessors, (236), 64 states have return successors, (243), 226 states have call predecessors, (243), 235 states have call successors, (243) [2024-12-02 14:52:10,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2409 transitions. [2024-12-02 14:52:10,857 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2409 transitions. Word has length 171 [2024-12-02 14:52:10,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:10,857 INFO L471 AbstractCegarLoop]: Abstraction has 1505 states and 2409 transitions. [2024-12-02 14:52:10,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 14:52:10,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2409 transitions. [2024-12-02 14:52:10,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 14:52:10,863 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:10,863 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:10,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 14:52:11,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e71b3d1-4519-4e66-9064-83f8da1acad7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:52:11,064 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:11,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:11,065 INFO L85 PathProgramCache]: Analyzing trace with hash 2119083269, now seen corresponding path program 1 times [2024-12-02 14:52:11,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:11,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630257274] [2024-12-02 14:52:11,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:11,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:52:11,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:11,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630257274] [2024-12-02 14:52:11,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630257274] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:11,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:11,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:52:11,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979245396] [2024-12-02 14:52:11,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:11,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:52:11,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:11,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:52:11,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:52:11,176 INFO L87 Difference]: Start difference. First operand 1505 states and 2409 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:11,250 INFO L93 Difference]: Finished difference Result 3354 states and 5426 transitions. [2024-12-02 14:52:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:52:11,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 177 [2024-12-02 14:52:11,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:11,264 INFO L225 Difference]: With dead ends: 3354 [2024-12-02 14:52:11,264 INFO L226 Difference]: Without dead ends: 1965 [2024-12-02 14:52:11,269 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 [2024-12-02 14:52:11,269 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 173 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1713 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 [2024-12-02 14:52:11,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1713 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:52:11,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2024-12-02 14:52:11,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1955. [2024-12-02 14:52:11,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1584 states have (on average 1.6098484848484849) internal successors, (2550), 1633 states have internal predecessors, (2550), 306 states have call successors, (306), 65 states have call predecessors, (306), 64 states have return successors, (313), 296 states have call predecessors, (313), 305 states have call successors, (313) [2024-12-02 14:52:11,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 3169 transitions. [2024-12-02 14:52:11,364 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 3169 transitions. Word has length 177 [2024-12-02 14:52:11,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:11,364 INFO L471 AbstractCegarLoop]: Abstraction has 1955 states and 3169 transitions. [2024-12-02 14:52:11,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:11,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 3169 transitions. [2024-12-02 14:52:11,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-12-02 14:52:11,375 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:11,375 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:11,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:52:11,376 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:11,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:11,376 INFO L85 PathProgramCache]: Analyzing trace with hash 211138116, now seen corresponding path program 1 times [2024-12-02 14:52:11,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:11,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824894720] [2024-12-02 14:52:11,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:11,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:52:11,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:11,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824894720] [2024-12-02 14:52:11,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824894720] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:11,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:11,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:52:11,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401989474] [2024-12-02 14:52:11,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:11,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:52:11,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:11,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:52:11,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:52:11,478 INFO L87 Difference]: Start difference. First operand 1955 states and 3169 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:11,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:11,582 INFO L93 Difference]: Finished difference Result 4527 states and 7432 transitions. [2024-12-02 14:52:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:52:11,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 178 [2024-12-02 14:52:11,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:11,600 INFO L225 Difference]: With dead ends: 4527 [2024-12-02 14:52:11,600 INFO L226 Difference]: Without dead ends: 2916 [2024-12-02 14:52:11,607 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 [2024-12-02 14:52:11,607 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 171 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 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 [2024-12-02 14:52:11,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1745 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:52:11,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2024-12-02 14:52:11,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2906. [2024-12-02 14:52:11,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2906 states, 2380 states have (on average 1.6264705882352941) internal successors, (3871), 2449 states have internal predecessors, (3871), 461 states have call successors, (461), 65 states have call predecessors, (461), 64 states have return successors, (468), 451 states have call predecessors, (468), 460 states have call successors, (468) [2024-12-02 14:52:11,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2906 states to 2906 states and 4800 transitions. [2024-12-02 14:52:11,773 INFO L78 Accepts]: Start accepts. Automaton has 2906 states and 4800 transitions. Word has length 178 [2024-12-02 14:52:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:11,773 INFO L471 AbstractCegarLoop]: Abstraction has 2906 states and 4800 transitions. [2024-12-02 14:52:11,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2906 states and 4800 transitions. [2024-12-02 14:52:11,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 14:52:11,791 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:11,791 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:11,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:52:11,791 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:11,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:11,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2073017952, now seen corresponding path program 1 times [2024-12-02 14:52:11,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:11,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102625895] [2024-12-02 14:52:11,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:11,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:52:11,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:11,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102625895] [2024-12-02 14:52:11,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102625895] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:11,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:11,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:52:11,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823390257] [2024-12-02 14:52:11,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:11,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:52:11,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:11,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:52:11,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:52:11,887 INFO L87 Difference]: Start difference. First operand 2906 states and 4800 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:12,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:12,029 INFO L93 Difference]: Finished difference Result 6950 states and 11589 transitions. [2024-12-02 14:52:12,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:52:12,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 179 [2024-12-02 14:52:12,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:12,055 INFO L225 Difference]: With dead ends: 6950 [2024-12-02 14:52:12,055 INFO L226 Difference]: Without dead ends: 4319 [2024-12-02 14:52:12,065 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 [2024-12-02 14:52:12,066 INFO L435 NwaCegarLoop]: 890 mSDtfsCounter, 169 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1757 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 [2024-12-02 14:52:12,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1757 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:52:12,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4319 states. [2024-12-02 14:52:12,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4319 to 4309. [2024-12-02 14:52:12,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4309 states, 3574 states have (on average 1.6345831001678792) internal successors, (5842), 3671 states have internal predecessors, (5842), 670 states have call successors, (670), 65 states have call predecessors, (670), 64 states have return successors, (677), 660 states have call predecessors, (677), 669 states have call successors, (677) [2024-12-02 14:52:12,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4309 states to 4309 states and 7189 transitions. [2024-12-02 14:52:12,300 INFO L78 Accepts]: Start accepts. Automaton has 4309 states and 7189 transitions. Word has length 179 [2024-12-02 14:52:12,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:12,301 INFO L471 AbstractCegarLoop]: Abstraction has 4309 states and 7189 transitions. [2024-12-02 14:52:12,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:12,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4309 states and 7189 transitions. [2024-12-02 14:52:12,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-12-02 14:52:12,329 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:12,329 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:12,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 14:52:12,329 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:12,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:12,330 INFO L85 PathProgramCache]: Analyzing trace with hash -871410005, now seen corresponding path program 1 times [2024-12-02 14:52:12,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:12,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108660233] [2024-12-02 14:52:12,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:12,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:52:12,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:12,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108660233] [2024-12-02 14:52:12,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108660233] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:12,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:12,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:52:12,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346878012] [2024-12-02 14:52:12,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:12,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:52:12,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:12,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:52:12,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:52:12,431 INFO L87 Difference]: Start difference. First operand 4309 states and 7189 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:12,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:12,616 INFO L93 Difference]: Finished difference Result 10231 states and 17203 transitions. [2024-12-02 14:52:12,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:52:12,617 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 180 [2024-12-02 14:52:12,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:12,654 INFO L225 Difference]: With dead ends: 10231 [2024-12-02 14:52:12,654 INFO L226 Difference]: Without dead ends: 6485 [2024-12-02 14:52:12,667 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 [2024-12-02 14:52:12,667 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 167 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 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 [2024-12-02 14:52:12,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1745 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:52:12,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6485 states. [2024-12-02 14:52:12,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6485 to 6475. [2024-12-02 14:52:12,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6475 states, 5454 states have (on average 1.6417308397506418) internal successors, (8954), 5597 states have internal predecessors, (8954), 956 states have call successors, (956), 65 states have call predecessors, (956), 64 states have return successors, (963), 946 states have call predecessors, (963), 955 states have call successors, (963) [2024-12-02 14:52:12,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6475 states to 6475 states and 10873 transitions. [2024-12-02 14:52:12,953 INFO L78 Accepts]: Start accepts. Automaton has 6475 states and 10873 transitions. Word has length 180 [2024-12-02 14:52:12,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:12,953 INFO L471 AbstractCegarLoop]: Abstraction has 6475 states and 10873 transitions. [2024-12-02 14:52:12,954 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:12,954 INFO L276 IsEmpty]: Start isEmpty. Operand 6475 states and 10873 transitions. [2024-12-02 14:52:12,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-12-02 14:52:12,989 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:12,989 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:12,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 14:52:12,989 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:12,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:12,990 INFO L85 PathProgramCache]: Analyzing trace with hash -140116952, now seen corresponding path program 1 times [2024-12-02 14:52:12,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:12,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878412860] [2024-12-02 14:52:12,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:12,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:52:13,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:13,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878412860] [2024-12-02 14:52:13,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878412860] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:13,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:13,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:52:13,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515714785] [2024-12-02 14:52:13,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:13,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:52:13,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:13,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:52:13,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:52:13,077 INFO L87 Difference]: Start difference. First operand 6475 states and 10873 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:13,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:13,326 INFO L93 Difference]: Finished difference Result 15548 states and 26305 transitions. [2024-12-02 14:52:13,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:52:13,326 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 181 [2024-12-02 14:52:13,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:13,389 INFO L225 Difference]: With dead ends: 15548 [2024-12-02 14:52:13,389 INFO L226 Difference]: Without dead ends: 10058 [2024-12-02 14:52:13,410 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 [2024-12-02 14:52:13,411 INFO L435 NwaCegarLoop]: 890 mSDtfsCounter, 165 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1754 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 [2024-12-02 14:52:13,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 1754 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:52:13,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10058 states. [2024-12-02 14:52:13,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10058 to 10048. [2024-12-02 14:52:13,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10048 states, 8586 states have (on average 1.6480316794782204) internal successors, (14150), 8809 states have internal predecessors, (14150), 1397 states have call successors, (1397), 65 states have call predecessors, (1397), 64 states have return successors, (1404), 1387 states have call predecessors, (1404), 1396 states have call successors, (1404) [2024-12-02 14:52:13,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10048 states to 10048 states and 16951 transitions. [2024-12-02 14:52:13,881 INFO L78 Accepts]: Start accepts. Automaton has 10048 states and 16951 transitions. Word has length 181 [2024-12-02 14:52:13,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:13,881 INFO L471 AbstractCegarLoop]: Abstraction has 10048 states and 16951 transitions. [2024-12-02 14:52:13,882 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:13,882 INFO L276 IsEmpty]: Start isEmpty. Operand 10048 states and 16951 transitions. [2024-12-02 14:52:13,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-12-02 14:52:13,916 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:13,917 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:13,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 14:52:13,917 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:13,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:13,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1662459072, now seen corresponding path program 1 times [2024-12-02 14:52:13,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:13,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064363250] [2024-12-02 14:52:13,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:13,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:52:13,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:13,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064363250] [2024-12-02 14:52:13,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064363250] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:13,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:13,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:52:13,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489227514] [2024-12-02 14:52:13,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:14,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:52:14,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:14,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:52:14,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:52:14,000 INFO L87 Difference]: Start difference. First operand 10048 states and 16951 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:14,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:14,322 INFO L93 Difference]: Finished difference Result 24674 states and 41937 transitions. [2024-12-02 14:52:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:52:14,322 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 182 [2024-12-02 14:52:14,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:14,382 INFO L225 Difference]: With dead ends: 24674 [2024-12-02 14:52:14,382 INFO L226 Difference]: Without dead ends: 16207 [2024-12-02 14:52:14,401 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 [2024-12-02 14:52:14,402 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 163 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1740 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 [2024-12-02 14:52:14,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 1740 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:52:14,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16207 states. [2024-12-02 14:52:14,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16207 to 16197. [2024-12-02 14:52:14,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16197 states, 13824 states have (on average 1.6491608796296295) internal successors, (22798), 14193 states have internal predecessors, (22798), 2308 states have call successors, (2308), 65 states have call predecessors, (2308), 64 states have return successors, (2315), 2298 states have call predecessors, (2315), 2307 states have call successors, (2315) [2024-12-02 14:52:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16197 states to 16197 states and 27421 transitions. [2024-12-02 14:52:15,029 INFO L78 Accepts]: Start accepts. Automaton has 16197 states and 27421 transitions. Word has length 182 [2024-12-02 14:52:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:15,029 INFO L471 AbstractCegarLoop]: Abstraction has 16197 states and 27421 transitions. [2024-12-02 14:52:15,030 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:15,031 INFO L276 IsEmpty]: Start isEmpty. Operand 16197 states and 27421 transitions. [2024-12-02 14:52:15,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-12-02 14:52:15,099 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:15,100 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:15,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 14:52:15,100 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:15,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:15,101 INFO L85 PathProgramCache]: Analyzing trace with hash -609351230, now seen corresponding path program 1 times [2024-12-02 14:52:15,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:15,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264091723] [2024-12-02 14:52:15,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:15,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:52:15,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:15,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264091723] [2024-12-02 14:52:15,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264091723] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:15,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:15,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:52:15,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208523346] [2024-12-02 14:52:15,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:15,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:52:15,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:15,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:52:15,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:52:15,219 INFO L87 Difference]: Start difference. First operand 16197 states and 27421 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:16,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:16,040 INFO L93 Difference]: Finished difference Result 41475 states and 70704 transitions. [2024-12-02 14:52:16,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:52:16,041 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), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 183 [2024-12-02 14:52:16,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:16,146 INFO L225 Difference]: With dead ends: 41475 [2024-12-02 14:52:16,146 INFO L226 Difference]: Without dead ends: 27555 [2024-12-02 14:52:16,171 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 [2024-12-02 14:52:16,171 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 161 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1754 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 [2024-12-02 14:52:16,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1754 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:52:16,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27555 states. [2024-12-02 14:52:16,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27555 to 27545. [2024-12-02 14:52:16,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27545 states, 23614 states have (on average 1.6519014144151773) internal successors, (39008), 24259 states have internal predecessors, (39008), 3866 states have call successors, (3866), 65 states have call predecessors, (3866), 64 states have return successors, (3873), 3856 states have call predecessors, (3873), 3865 states have call successors, (3873) [2024-12-02 14:52:17,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27545 states to 27545 states and 46747 transitions. [2024-12-02 14:52:17,077 INFO L78 Accepts]: Start accepts. Automaton has 27545 states and 46747 transitions. Word has length 183 [2024-12-02 14:52:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:17,077 INFO L471 AbstractCegarLoop]: Abstraction has 27545 states and 46747 transitions. [2024-12-02 14:52:17,077 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), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:17,077 INFO L276 IsEmpty]: Start isEmpty. Operand 27545 states and 46747 transitions. [2024-12-02 14:52:17,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 14:52:17,163 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:17,163 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:17,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 14:52:17,163 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:17,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:17,164 INFO L85 PathProgramCache]: Analyzing trace with hash 61838855, now seen corresponding path program 1 times [2024-12-02 14:52:17,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:17,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907872085] [2024-12-02 14:52:17,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:17,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:52:17,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:17,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907872085] [2024-12-02 14:52:17,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907872085] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:17,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:17,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:52:17,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961935828] [2024-12-02 14:52:17,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:17,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:52:17,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:17,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:52:17,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:52:17,248 INFO L87 Difference]: Start difference. First operand 27545 states and 46747 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:18,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:18,179 INFO L93 Difference]: Finished difference Result 68032 states and 115336 transitions. [2024-12-02 14:52:18,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:52:18,180 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 184 [2024-12-02 14:52:18,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:18,375 INFO L225 Difference]: With dead ends: 68032 [2024-12-02 14:52:18,375 INFO L226 Difference]: Without dead ends: 44351 [2024-12-02 14:52:18,432 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 [2024-12-02 14:52:18,432 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 159 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1717 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 [2024-12-02 14:52:18,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1717 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:52:18,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44351 states. [2024-12-02 14:52:19,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44351 to 44341. [2024-12-02 14:52:19,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44341 states, 38091 states have (on average 1.6340867921556272) internal successors, (62244), 39270 states have internal predecessors, (62244), 6185 states have call successors, (6185), 65 states have call predecessors, (6185), 64 states have return successors, (6192), 6175 states have call predecessors, (6192), 6184 states have call successors, (6192) [2024-12-02 14:52:19,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44341 states to 44341 states and 74621 transitions. [2024-12-02 14:52:19,902 INFO L78 Accepts]: Start accepts. Automaton has 44341 states and 74621 transitions. Word has length 184 [2024-12-02 14:52:19,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:19,903 INFO L471 AbstractCegarLoop]: Abstraction has 44341 states and 74621 transitions. [2024-12-02 14:52:19,903 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:19,903 INFO L276 IsEmpty]: Start isEmpty. Operand 44341 states and 74621 transitions. [2024-12-02 14:52:20,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-12-02 14:52:20,034 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:20,034 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:20,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 14:52:20,035 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:20,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:20,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1164148566, now seen corresponding path program 1 times [2024-12-02 14:52:20,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:20,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084582842] [2024-12-02 14:52:20,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:20,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:52:20,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:20,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084582842] [2024-12-02 14:52:20,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084582842] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:20,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:20,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:52:20,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753338016] [2024-12-02 14:52:20,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:20,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:52:20,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:20,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:52:20,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:52:20,117 INFO L87 Difference]: Start difference. First operand 44341 states and 74621 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:21,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:21,238 INFO L93 Difference]: Finished difference Result 119942 states and 202293 transitions. [2024-12-02 14:52:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:52:21,239 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2024-12-02 14:52:21,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:21,566 INFO L225 Difference]: With dead ends: 119942 [2024-12-02 14:52:21,567 INFO L226 Difference]: Without dead ends: 80512 [2024-12-02 14:52:21,626 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 [2024-12-02 14:52:21,626 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 157 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1740 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 [2024-12-02 14:52:21,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 1740 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:52:21,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80512 states. [2024-12-02 14:52:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80512 to 80502. [2024-12-02 14:52:23,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80502 states, 69466 states have (on average 1.6289695678461407) internal successors, (113158), 71169 states have internal predecessors, (113158), 10971 states have call successors, (10971), 65 states have call predecessors, (10971), 64 states have return successors, (10978), 10961 states have call predecessors, (10978), 10970 states have call successors, (10978) [2024-12-02 14:52:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80502 states to 80502 states and 135107 transitions. [2024-12-02 14:52:23,839 INFO L78 Accepts]: Start accepts. Automaton has 80502 states and 135107 transitions. Word has length 185 [2024-12-02 14:52:23,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:23,839 INFO L471 AbstractCegarLoop]: Abstraction has 80502 states and 135107 transitions. [2024-12-02 14:52:23,839 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:23,839 INFO L276 IsEmpty]: Start isEmpty. Operand 80502 states and 135107 transitions. [2024-12-02 14:52:24,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-12-02 14:52:24,022 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:24,022 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:24,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 14:52:24,022 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:24,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:24,023 INFO L85 PathProgramCache]: Analyzing trace with hash -999667415, now seen corresponding path program 1 times [2024-12-02 14:52:24,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:24,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623071417] [2024-12-02 14:52:24,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:24,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:52:24,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:24,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623071417] [2024-12-02 14:52:24,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623071417] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:24,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:24,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:52:24,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99680950] [2024-12-02 14:52:24,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:24,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:52:24,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:24,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:52:24,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:52:24,110 INFO L87 Difference]: Start difference. First operand 80502 states and 135107 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:26,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:26,157 INFO L93 Difference]: Finished difference Result 222639 states and 374838 transitions. [2024-12-02 14:52:26,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:52:26,157 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 186 [2024-12-02 14:52:26,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:26,627 INFO L225 Difference]: With dead ends: 222639 [2024-12-02 14:52:26,627 INFO L226 Difference]: Without dead ends: 148528 [2024-12-02 14:52:26,789 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 [2024-12-02 14:52:26,790 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 155 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 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 [2024-12-02 14:52:26,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 1746 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:52:26,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148528 states. [2024-12-02 14:52:30,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148528 to 148518. [2024-12-02 14:52:30,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148518 states, 128585 states have (on average 1.6273826651631216) internal successors, (209257), 131849 states have internal predecessors, (209257), 19868 states have call successors, (19868), 65 states have call predecessors, (19868), 64 states have return successors, (19875), 19858 states have call predecessors, (19875), 19867 states have call successors, (19875) [2024-12-02 14:52:31,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148518 states to 148518 states and 249000 transitions. [2024-12-02 14:52:31,235 INFO L78 Accepts]: Start accepts. Automaton has 148518 states and 249000 transitions. Word has length 186 [2024-12-02 14:52:31,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:31,235 INFO L471 AbstractCegarLoop]: Abstraction has 148518 states and 249000 transitions. [2024-12-02 14:52:31,235 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:31,235 INFO L276 IsEmpty]: Start isEmpty. Operand 148518 states and 249000 transitions. [2024-12-02 14:52:31,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-12-02 14:52:31,406 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:31,406 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:31,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 14:52:31,406 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:31,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:31,407 INFO L85 PathProgramCache]: Analyzing trace with hash 886388208, now seen corresponding path program 1 times [2024-12-02 14:52:31,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:31,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460988784] [2024-12-02 14:52:31,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:31,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:31,491 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:52:31,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:31,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460988784] [2024-12-02 14:52:31,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460988784] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:31,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:31,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:52:31,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055790155] [2024-12-02 14:52:31,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:31,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:52:31,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:31,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:52:31,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:52:31,494 INFO L87 Difference]: Start difference. First operand 148518 states and 249000 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:34,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:34,997 INFO L93 Difference]: Finished difference Result 280531 states and 470176 transitions. [2024-12-02 14:52:34,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:52:34,997 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 187 [2024-12-02 14:52:34,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:35,701 INFO L225 Difference]: With dead ends: 280531 [2024-12-02 14:52:35,701 INFO L226 Difference]: Without dead ends: 280087 [2024-12-02 14:52:35,766 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 [2024-12-02 14:52:35,766 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 148 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1762 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 [2024-12-02 14:52:35,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1762 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:52:35,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280087 states. [2024-12-02 14:52:41,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280087 to 280077. [2024-12-02 14:52:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280077 states, 243558 states have (on average 1.619638853989604) internal successors, (394476), 247859 states have internal predecessors, (394476), 36454 states have call successors, (36454), 65 states have call predecessors, (36454), 64 states have return successors, (36461), 36444 states have call predecessors, (36461), 36453 states have call successors, (36461) [2024-12-02 14:52:42,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280077 states to 280077 states and 467391 transitions. [2024-12-02 14:52:42,760 INFO L78 Accepts]: Start accepts. Automaton has 280077 states and 467391 transitions. Word has length 187 [2024-12-02 14:52:42,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:52:42,760 INFO L471 AbstractCegarLoop]: Abstraction has 280077 states and 467391 transitions. [2024-12-02 14:52:42,760 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-12-02 14:52:42,760 INFO L276 IsEmpty]: Start isEmpty. Operand 280077 states and 467391 transitions. [2024-12-02 14:52:43,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-12-02 14:52:43,092 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:52:43,092 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:52:43,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 14:52:43,092 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:52:43,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:52:43,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1848028511, now seen corresponding path program 1 times [2024-12-02 14:52:43,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:52:43,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394704923] [2024-12-02 14:52:43,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:52:43,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:52:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:52:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:52:43,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:52:43,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394704923] [2024-12-02 14:52:43,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394704923] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:52:43,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:52:43,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:52:43,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358464633] [2024-12-02 14:52:43,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:52:43,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:52:43,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:52:43,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:52:43,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:52:43,310 INFO L87 Difference]: Start difference. First operand 280077 states and 467391 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 14:52:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:52:53,196 INFO L93 Difference]: Finished difference Result 552200 states and 921814 transitions. [2024-12-02 14:52:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:52:53,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 188 [2024-12-02 14:52:53,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:52:54,575 INFO L225 Difference]: With dead ends: 552200 [2024-12-02 14:52:54,575 INFO L226 Difference]: Without dead ends: 551881 [2024-12-02 14:52:54,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:52:54,693 INFO L435 NwaCegarLoop]: 873 mSDtfsCounter, 772 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 3378 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:52:54,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 3378 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:52:54,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551881 states. [2024-12-02 14:53:07,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551881 to 551877. [2024-12-02 14:53:07,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551877 states, 479997 states have (on average 1.620458044529445) internal successors, (777815), 488462 states have internal predecessors, (777815), 71760 states have call successors, (71760), 125 states have call predecessors, (71760), 119 states have return successors, (71766), 71738 states have call predecessors, (71766), 71758 states have call successors, (71766) [2024-12-02 14:53:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551877 states to 551877 states and 921341 transitions. [2024-12-02 14:53:09,351 INFO L78 Accepts]: Start accepts. Automaton has 551877 states and 921341 transitions. Word has length 188 [2024-12-02 14:53:09,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:53:09,352 INFO L471 AbstractCegarLoop]: Abstraction has 551877 states and 921341 transitions. [2024-12-02 14:53:09,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 14:53:09,352 INFO L276 IsEmpty]: Start isEmpty. Operand 551877 states and 921341 transitions. [2024-12-02 14:53:10,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-12-02 14:53:10,191 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:53:10,191 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:53:10,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 14:53:10,191 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__ForwardErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:53:10,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:53:10,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1002657014, now seen corresponding path program 1 times [2024-12-02 14:53:10,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:53:10,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100535050] [2024-12-02 14:53:10,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:53:10,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:53:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:53:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2024-12-02 14:53:10,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:53:10,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100535050] [2024-12-02 14:53:10,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100535050] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:53:10,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:53:10,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 14:53:10,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735843069] [2024-12-02 14:53:10,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:53:10,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 14:53:10,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:53:10,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 14:53:10,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2024-12-02 14:53:10,938 INFO L87 Difference]: Start difference. First operand 551877 states and 921341 transitions. Second operand has 20 states, 18 states have (on average 6.5) internal successors, (117), 15 states have internal predecessors, (117), 9 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2024-12-02 14:53:19,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:53:19,997 INFO L93 Difference]: Finished difference Result 553656 states and 923994 transitions. [2024-12-02 14:53:19,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 14:53:19,997 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 6.5) internal successors, (117), 15 states have internal predecessors, (117), 9 states have call successors, (29), 6 states have call predecessors, (29), 3 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) Word has length 189 [2024-12-02 14:53:19,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:53:21,588 INFO L225 Difference]: With dead ends: 553656 [2024-12-02 14:53:21,588 INFO L226 Difference]: Without dead ends: 553020 [2024-12-02 14:53:21,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 14:53:21,688 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 1609 mSDsluCounter, 15535 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 16466 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:53:21,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 16466 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 14:53:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553020 states.