./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c07a23e40b849b33d08a88f08826cd6b68b33a2f2aee4edabb68f594c2a0aef6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:04:08,003 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:04:08,064 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:04:08,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:04:08,069 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:04:08,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:04:08,091 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:04:08,092 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:04:08,092 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:04:08,093 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:04:08,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:04:08,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:04:08,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:04:08,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:04:08,096 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:04:08,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:04:08,097 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:04:08,097 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:04:08,098 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:04:08,098 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:04:08,098 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:04:08,099 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:04:08,099 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:04:08,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:04:08,100 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:04:08,101 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:04:08,101 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:04:08,101 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:04:08,102 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:04:08,102 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:04:08,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:04:08,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:04:08,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:04:08,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:04:08,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:04:08,104 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:04:08,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:04:08,104 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:04:08,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:04:08,104 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:04:08,105 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:04:08,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:04:08,105 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c07a23e40b849b33d08a88f08826cd6b68b33a2f2aee4edabb68f594c2a0aef6 [2023-11-29 06:04:08,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:04:08,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:04:08,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:04:08,349 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:04:08,349 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:04:08,350 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/product-lines/email_spec1_product30.cil.c [2023-11-29 06:04:11,047 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:04:11,316 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:04:11,317 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/sv-benchmarks/c/product-lines/email_spec1_product30.cil.c [2023-11-29 06:04:11,337 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/data/dfb4e8ece/563cb34c1de24f47872bb5cc9f7550d6/FLAG9edc5def9 [2023-11-29 06:04:11,351 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/data/dfb4e8ece/563cb34c1de24f47872bb5cc9f7550d6 [2023-11-29 06:04:11,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:04:11,355 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:04:11,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:04:11,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:04:11,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:04:11,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:04:11" (1/1) ... [2023-11-29 06:04:11,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667a40c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:04:11, skipping insertion in model container [2023-11-29 06:04:11,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:04:11" (1/1) ... [2023-11-29 06:04:11,451 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:04:11,948 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/sv-benchmarks/c/product-lines/email_spec1_product30.cil.c[58327,58340] [2023-11-29 06:04:11,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:04:11,976 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:04:11,987 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [48] [2023-11-29 06:04:11,988 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"AddressBookEncrypt_spec.i","") [208] [2023-11-29 06:04:11,988 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [238] [2023-11-29 06:04:11,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [540] [2023-11-29 06:04:11,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [906] [2023-11-29 06:04:11,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1978] [2023-11-29 06:04:11,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2337] [2023-11-29 06:04:11,989 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2734] [2023-11-29 06:04:11,990 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2743] [2023-11-29 06:04:11,990 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2778] [2023-11-29 06:04:11,990 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2994] [2023-11-29 06:04:12,062 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/sv-benchmarks/c/product-lines/email_spec1_product30.cil.c[58327,58340] [2023-11-29 06:04:12,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:04:12,121 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:04:12,129 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:04:12,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:04:12 WrapperNode [2023-11-29 06:04:12,129 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:04:12,130 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:04:12,130 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:04:12,130 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:04:12,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:04:12" (1/1) ... [2023-11-29 06:04:12,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:04:12" (1/1) ... [2023-11-29 06:04:12,205 INFO L138 Inliner]: procedures = 131, calls = 218, calls flagged for inlining = 60, calls inlined = 50, statements flattened = 931 [2023-11-29 06:04:12,206 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:04:12,207 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:04:12,207 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:04:12,207 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:04:12,219 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:04:12" (1/1) ... [2023-11-29 06:04:12,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:04:12" (1/1) ... [2023-11-29 06:04:12,225 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:04:12" (1/1) ... [2023-11-29 06:04:12,251 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2023-11-29 06:04:12,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:04:12" (1/1) ... [2023-11-29 06:04:12,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:04:12" (1/1) ... [2023-11-29 06:04:12,271 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:04:12" (1/1) ... [2023-11-29 06:04:12,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:04:12" (1/1) ... [2023-11-29 06:04:12,286 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:04:12" (1/1) ... [2023-11-29 06:04:12,291 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:04:12" (1/1) ... [2023-11-29 06:04:12,299 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:04:12,300 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:04:12,300 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:04:12,300 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:04:12,301 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:04:12" (1/1) ... [2023-11-29 06:04:12,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:04:12,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:04:12,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:04:12,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:04:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2023-11-29 06:04:12,364 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2023-11-29 06:04:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2023-11-29 06:04:12,364 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2023-11-29 06:04:12,364 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2023-11-29 06:04:12,364 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2023-11-29 06:04:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2023-11-29 06:04:12,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2023-11-29 06:04:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2023-11-29 06:04:12,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2023-11-29 06:04:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2023-11-29 06:04:12,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2023-11-29 06:04:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2023-11-29 06:04:12,365 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2023-11-29 06:04:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2023-11-29 06:04:12,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2023-11-29 06:04:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2023-11-29 06:04:12,366 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2023-11-29 06:04:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2023-11-29 06:04:12,366 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2023-11-29 06:04:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-29 06:04:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2023-11-29 06:04:12,367 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2023-11-29 06:04:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2023-11-29 06:04:12,367 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2023-11-29 06:04:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:04:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2023-11-29 06:04:12,367 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2023-11-29 06:04:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2023-11-29 06:04:12,368 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2023-11-29 06:04:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2023-11-29 06:04:12,368 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2023-11-29 06:04:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2023-11-29 06:04:12,368 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2023-11-29 06:04:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2023-11-29 06:04:12,368 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2023-11-29 06:04:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2023-11-29 06:04:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2023-11-29 06:04:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2023-11-29 06:04:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2023-11-29 06:04:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2023-11-29 06:04:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2023-11-29 06:04:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2023-11-29 06:04:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2023-11-29 06:04:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2023-11-29 06:04:12,370 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2023-11-29 06:04:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:04:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:04:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:04:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 06:04:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2023-11-29 06:04:12,371 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2023-11-29 06:04:12,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:04:12,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:04:12,555 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:04:12,557 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:04:13,204 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:04:13,269 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:04:13,269 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:04:13,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:04:13 BoogieIcfgContainer [2023-11-29 06:04:13,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:04:13,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:04:13,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:04:13,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:04:13,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:04:11" (1/3) ... [2023-11-29 06:04:13,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f61277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:04:13, skipping insertion in model container [2023-11-29 06:04:13,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:04:12" (2/3) ... [2023-11-29 06:04:13,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f61277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:04:13, skipping insertion in model container [2023-11-29 06:04:13,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:04:13" (3/3) ... [2023-11-29 06:04:13,278 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product30.cil.c [2023-11-29 06:04:13,297 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:04:13,297 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:04:13,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:04:13,361 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@60a1845d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:04:13,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:04:13,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 320 states, 242 states have (on average 1.5743801652892562) internal successors, (381), 246 states have internal predecessors, (381), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-29 06:04:13,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 06:04:13,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:13,387 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:13,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:13,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:13,392 INFO L85 PathProgramCache]: Analyzing trace with hash -392236607, now seen corresponding path program 1 times [2023-11-29 06:04:13,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:13,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805976288] [2023-11-29 06:04:13,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:13,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:13,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:13,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:13,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:14,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 06:04:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:14,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 06:04:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:14,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 06:04:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:14,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 06:04:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:14,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 06:04:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:14,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 06:04:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:14,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 06:04:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:14,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 06:04:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:14,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 06:04:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:14,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 06:04:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:14,089 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 06:04:14,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:14,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805976288] [2023-11-29 06:04:14,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805976288] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:04:14,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500294883] [2023-11-29 06:04:14,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:14,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:14,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:04:14,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:04:14,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:04:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:14,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 06:04:14,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:04:14,475 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 06:04:14,475 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:04:14,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500294883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:14,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:04:14,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2023-11-29 06:04:14,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658967061] [2023-11-29 06:04:14,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:14,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:04:14,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:14,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:04:14,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:04:14,516 INFO L87 Difference]: Start difference. First operand has 320 states, 242 states have (on average 1.5743801652892562) internal successors, (381), 246 states have internal predecessors, (381), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:14,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:14,596 INFO L93 Difference]: Finished difference Result 495 states and 737 transitions. [2023-11-29 06:04:14,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:04:14,598 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 95 [2023-11-29 06:04:14,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:14,613 INFO L225 Difference]: With dead ends: 495 [2023-11-29 06:04:14,613 INFO L226 Difference]: Without dead ends: 317 [2023-11-29 06:04:14,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:04:14,622 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:14,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 470 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:04:14,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-11-29 06:04:14,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2023-11-29 06:04:14,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 240 states have (on average 1.5583333333333333) internal successors, (374), 243 states have internal predecessors, (374), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-29 06:04:14,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 479 transitions. [2023-11-29 06:04:14,692 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 479 transitions. Word has length 95 [2023-11-29 06:04:14,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:14,694 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 479 transitions. [2023-11-29 06:04:14,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:14,694 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 479 transitions. [2023-11-29 06:04:14,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-29 06:04:14,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:14,701 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:14,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:04:14,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 06:04:14,902 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:14,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:14,903 INFO L85 PathProgramCache]: Analyzing trace with hash 122970567, now seen corresponding path program 1 times [2023-11-29 06:04:14,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:14,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568186388] [2023-11-29 06:04:14,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:14,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:15,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:15,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:15,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:15,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 06:04:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 06:04:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 06:04:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:15,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 06:04:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:15,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 06:04:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:15,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 06:04:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:15,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 06:04:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:15,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 06:04:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:15,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 06:04:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:15,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 06:04:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 06:04:15,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:15,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568186388] [2023-11-29 06:04:15,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568186388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:04:15,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614461208] [2023-11-29 06:04:15,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:15,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:15,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:04:15,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:04:15,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:04:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:15,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:04:15,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:04:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 06:04:15,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:04:15,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614461208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:15,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:04:15,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-29 06:04:15,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611204177] [2023-11-29 06:04:15,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:15,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:04:15,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:15,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:04:15,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:04:15,551 INFO L87 Difference]: Start difference. First operand 317 states and 479 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:15,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:15,619 INFO L93 Difference]: Finished difference Result 491 states and 724 transitions. [2023-11-29 06:04:15,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:04:15,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 96 [2023-11-29 06:04:15,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:15,624 INFO L225 Difference]: With dead ends: 491 [2023-11-29 06:04:15,624 INFO L226 Difference]: Without dead ends: 319 [2023-11-29 06:04:15,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:04:15,627 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 0 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:15,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 933 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:04:15,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-11-29 06:04:15,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2023-11-29 06:04:15,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 242 states have (on average 1.5537190082644627) internal successors, (376), 245 states have internal predecessors, (376), 53 states have call successors, (53), 23 states have call predecessors, (53), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-29 06:04:15,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 481 transitions. [2023-11-29 06:04:15,667 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 481 transitions. Word has length 96 [2023-11-29 06:04:15,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:15,667 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 481 transitions. [2023-11-29 06:04:15,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:15,668 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 481 transitions. [2023-11-29 06:04:15,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 06:04:15,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:15,671 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:15,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:04:15,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:15,872 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:15,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1704534011, now seen corresponding path program 1 times [2023-11-29 06:04:15,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:15,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693277342] [2023-11-29 06:04:15,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:15,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 06:04:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 06:04:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 06:04:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 06:04:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 06:04:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 06:04:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:04:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 06:04:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 06:04:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 06:04:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 06:04:16,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:16,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693277342] [2023-11-29 06:04:16,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693277342] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:04:16,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235404111] [2023-11-29 06:04:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:16,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:16,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:04:16,151 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:04:16,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:04:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:04:16,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:04:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 06:04:16,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:04:16,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235404111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:16,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:04:16,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-29 06:04:16,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121035023] [2023-11-29 06:04:16,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:16,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:04:16,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:16,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:04:16,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:04:16,469 INFO L87 Difference]: Start difference. First operand 319 states and 481 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:16,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:16,525 INFO L93 Difference]: Finished difference Result 668 states and 1021 transitions. [2023-11-29 06:04:16,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:04:16,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 103 [2023-11-29 06:04:16,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:16,530 INFO L225 Difference]: With dead ends: 668 [2023-11-29 06:04:16,530 INFO L226 Difference]: Without dead ends: 371 [2023-11-29 06:04:16,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:04:16,532 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 102 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:16,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 900 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:04:16,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2023-11-29 06:04:16,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 366. [2023-11-29 06:04:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 278 states have (on average 1.5683453237410072) internal successors, (436), 281 states have internal predecessors, (436), 64 states have call successors, (64), 23 states have call predecessors, (64), 23 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2023-11-29 06:04:16,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 563 transitions. [2023-11-29 06:04:16,568 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 563 transitions. Word has length 103 [2023-11-29 06:04:16,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:16,568 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 563 transitions. [2023-11-29 06:04:16,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:16,569 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 563 transitions. [2023-11-29 06:04:16,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-29 06:04:16,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:16,572 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:16,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 06:04:16,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:16,772 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:16,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:16,773 INFO L85 PathProgramCache]: Analyzing trace with hash 357840441, now seen corresponding path program 1 times [2023-11-29 06:04:16,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:16,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235222453] [2023-11-29 06:04:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:16,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 06:04:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 06:04:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 06:04:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 06:04:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 06:04:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 06:04:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 06:04:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:04:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 06:04:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 06:04:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 06:04:16,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:16,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235222453] [2023-11-29 06:04:16,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235222453] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:04:16,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514058686] [2023-11-29 06:04:16,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:16,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:16,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:04:16,957 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:04:16,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:04:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:17,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:04:17,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:04:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:04:17,301 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:04:17,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514058686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:17,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:04:17,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-11-29 06:04:17,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623387910] [2023-11-29 06:04:17,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:17,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:04:17,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:17,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:04:17,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:04:17,304 INFO L87 Difference]: Start difference. First operand 366 states and 563 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 06:04:17,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:17,415 INFO L93 Difference]: Finished difference Result 727 states and 1120 transitions. [2023-11-29 06:04:17,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:04:17,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 104 [2023-11-29 06:04:17,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:17,419 INFO L225 Difference]: With dead ends: 727 [2023-11-29 06:04:17,420 INFO L226 Difference]: Without dead ends: 368 [2023-11-29 06:04:17,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:04:17,422 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 8 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:17,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1821 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:04:17,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-11-29 06:04:17,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2023-11-29 06:04:17,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 279 states have (on average 1.5663082437275986) internal successors, (437), 283 states have internal predecessors, (437), 64 states have call successors, (64), 23 states have call predecessors, (64), 24 states have return successors, (65), 63 states have call predecessors, (65), 63 states have call successors, (65) [2023-11-29 06:04:17,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 566 transitions. [2023-11-29 06:04:17,444 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 566 transitions. Word has length 104 [2023-11-29 06:04:17,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:17,444 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 566 transitions. [2023-11-29 06:04:17,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 06:04:17,444 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 566 transitions. [2023-11-29 06:04:17,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 06:04:17,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:17,447 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:17,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:04:17,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:17,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:17,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:17,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1965777925, now seen corresponding path program 1 times [2023-11-29 06:04:17,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:17,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054019810] [2023-11-29 06:04:17,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:17,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:17,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:17,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:17,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:17,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:04:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:17,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 06:04:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:17,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 06:04:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:17,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-29 06:04:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:17,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 06:04:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 06:04:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:17,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 06:04:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:17,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 06:04:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:17,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 06:04:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:17,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 06:04:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 06:04:17,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:17,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054019810] [2023-11-29 06:04:17,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054019810] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:04:17,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812170123] [2023-11-29 06:04:17,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:17,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:17,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:04:17,929 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:04:17,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:04:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:18,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:04:18,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:04:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:04:18,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:04:18,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812170123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:18,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:04:18,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-11-29 06:04:18,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565474059] [2023-11-29 06:04:18,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:18,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:04:18,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:18,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:04:18,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:04:18,275 INFO L87 Difference]: Start difference. First operand 368 states and 566 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 06:04:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:18,393 INFO L93 Difference]: Finished difference Result 729 states and 1125 transitions. [2023-11-29 06:04:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:04:18,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 105 [2023-11-29 06:04:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:18,396 INFO L225 Difference]: With dead ends: 729 [2023-11-29 06:04:18,397 INFO L226 Difference]: Without dead ends: 370 [2023-11-29 06:04:18,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:04:18,399 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 8 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:18,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1807 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:04:18,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-29 06:04:18,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2023-11-29 06:04:18,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 280 states have (on average 1.5642857142857143) internal successors, (438), 285 states have internal predecessors, (438), 64 states have call successors, (64), 23 states have call predecessors, (64), 25 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2023-11-29 06:04:18,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 572 transitions. [2023-11-29 06:04:18,420 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 572 transitions. Word has length 105 [2023-11-29 06:04:18,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:18,421 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 572 transitions. [2023-11-29 06:04:18,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 06:04:18,421 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 572 transitions. [2023-11-29 06:04:18,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-29 06:04:18,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:18,423 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:18,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:04:18,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:18,624 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:18,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:18,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1037844344, now seen corresponding path program 1 times [2023-11-29 06:04:18,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:18,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992604741] [2023-11-29 06:04:18,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:18,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:18,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:18,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:18,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:18,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:04:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:18,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:04:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:18,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 06:04:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:18,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 06:04:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:18,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 06:04:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:18,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 06:04:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:18,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 06:04:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:18,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 06:04:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 06:04:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:18,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 06:04:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:18,821 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 06:04:18,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:18,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992604741] [2023-11-29 06:04:18,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992604741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:18,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:04:18,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:04:18,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837432958] [2023-11-29 06:04:18,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:18,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:04:18,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:18,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:04:18,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:04:18,823 INFO L87 Difference]: Start difference. First operand 370 states and 572 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 06:04:20,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:20,755 INFO L93 Difference]: Finished difference Result 807 states and 1260 transitions. [2023-11-29 06:04:20,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:04:20,756 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 106 [2023-11-29 06:04:20,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:20,760 INFO L225 Difference]: With dead ends: 807 [2023-11-29 06:04:20,760 INFO L226 Difference]: Without dead ends: 456 [2023-11-29 06:04:20,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:04:20,763 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1044 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:20,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 963 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 06:04:20,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2023-11-29 06:04:20,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 370. [2023-11-29 06:04:20,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 280 states have (on average 1.5642857142857143) internal successors, (438), 285 states have internal predecessors, (438), 64 states have call successors, (64), 23 states have call predecessors, (64), 25 states have return successors, (69), 63 states have call predecessors, (69), 63 states have call successors, (69) [2023-11-29 06:04:20,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 571 transitions. [2023-11-29 06:04:20,801 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 571 transitions. Word has length 106 [2023-11-29 06:04:20,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:20,802 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 571 transitions. [2023-11-29 06:04:20,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 06:04:20,802 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 571 transitions. [2023-11-29 06:04:20,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 06:04:20,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:20,805 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:20,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:04:20,805 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:20,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:20,806 INFO L85 PathProgramCache]: Analyzing trace with hash 289902940, now seen corresponding path program 2 times [2023-11-29 06:04:20,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:20,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647274083] [2023-11-29 06:04:20,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:20,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:20,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:21,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:21,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:21,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:04:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:21,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:04:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:21,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 06:04:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:21,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 06:04:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:21,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 06:04:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:21,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 06:04:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:21,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 06:04:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:21,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 06:04:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:21,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 06:04:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:21,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 06:04:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:21,075 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 06:04:21,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:21,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647274083] [2023-11-29 06:04:21,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647274083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:21,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:04:21,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:04:21,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734355926] [2023-11-29 06:04:21,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:21,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:04:21,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:21,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:04:21,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:04:21,077 INFO L87 Difference]: Start difference. First operand 370 states and 571 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 06:04:22,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:22,946 INFO L93 Difference]: Finished difference Result 809 states and 1263 transitions. [2023-11-29 06:04:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:04:22,946 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 107 [2023-11-29 06:04:22,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:22,950 INFO L225 Difference]: With dead ends: 809 [2023-11-29 06:04:22,950 INFO L226 Difference]: Without dead ends: 458 [2023-11-29 06:04:22,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:04:22,953 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 1039 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 2514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:22,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 963 Invalid, 2514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 06:04:22,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2023-11-29 06:04:22,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 372. [2023-11-29 06:04:22,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 281 states have (on average 1.5622775800711743) internal successors, (439), 287 states have internal predecessors, (439), 64 states have call successors, (64), 23 states have call predecessors, (64), 26 states have return successors, (71), 63 states have call predecessors, (71), 63 states have call successors, (71) [2023-11-29 06:04:22,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 574 transitions. [2023-11-29 06:04:22,989 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 574 transitions. Word has length 107 [2023-11-29 06:04:22,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:22,990 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 574 transitions. [2023-11-29 06:04:22,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-29 06:04:22,990 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 574 transitions. [2023-11-29 06:04:22,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-29 06:04:22,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:22,993 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:22,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:04:22,993 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:22,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:22,993 INFO L85 PathProgramCache]: Analyzing trace with hash -172335405, now seen corresponding path program 1 times [2023-11-29 06:04:22,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:22,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631048810] [2023-11-29 06:04:22,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:22,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:23,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:23,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:23,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:23,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:04:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:23,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:04:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:23,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:04:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:23,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 06:04:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:23,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 06:04:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:23,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 06:04:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:23,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 06:04:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:23,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 06:04:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:23,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 06:04:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:23,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 06:04:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 06:04:23,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:23,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631048810] [2023-11-29 06:04:23,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631048810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:23,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:04:23,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 06:04:23,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874492440] [2023-11-29 06:04:23,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:23,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:04:23,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:23,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:04:23,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:04:23,257 INFO L87 Difference]: Start difference. First operand 372 states and 574 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 06:04:25,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:25,575 INFO L93 Difference]: Finished difference Result 807 states and 1258 transitions. [2023-11-29 06:04:25,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:04:25,575 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 108 [2023-11-29 06:04:25,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:25,579 INFO L225 Difference]: With dead ends: 807 [2023-11-29 06:04:25,579 INFO L226 Difference]: Without dead ends: 458 [2023-11-29 06:04:25,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:04:25,582 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 1049 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 3630 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 3971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 3630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:25,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 1332 Invalid, 3971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 3630 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 06:04:25,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2023-11-29 06:04:25,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 372. [2023-11-29 06:04:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 281 states have (on average 1.5622775800711743) internal successors, (439), 287 states have internal predecessors, (439), 64 states have call successors, (64), 23 states have call predecessors, (64), 26 states have return successors, (70), 63 states have call predecessors, (70), 63 states have call successors, (70) [2023-11-29 06:04:25,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 573 transitions. [2023-11-29 06:04:25,618 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 573 transitions. Word has length 108 [2023-11-29 06:04:25,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:25,619 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 573 transitions. [2023-11-29 06:04:25,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 06:04:25,619 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 573 transitions. [2023-11-29 06:04:25,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 06:04:25,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:25,621 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:25,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:04:25,622 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:25,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:25,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1381306204, now seen corresponding path program 2 times [2023-11-29 06:04:25,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:25,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427291526] [2023-11-29 06:04:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:25,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:25,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:25,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:25,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:25,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:04:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:25,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:04:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:25,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:04:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:25,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 06:04:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:25,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:04:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:25,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 06:04:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:25,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 06:04:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 06:04:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:25,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 06:04:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:25,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 06:04:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 06:04:25,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:25,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427291526] [2023-11-29 06:04:25,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427291526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:25,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:04:25,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 06:04:25,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592176336] [2023-11-29 06:04:25,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:25,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:04:25,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:25,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:04:25,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:04:25,880 INFO L87 Difference]: Start difference. First operand 372 states and 573 transitions. Second operand has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 06:04:28,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:28,096 INFO L93 Difference]: Finished difference Result 809 states and 1264 transitions. [2023-11-29 06:04:28,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:04:28,096 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 109 [2023-11-29 06:04:28,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:28,100 INFO L225 Difference]: With dead ends: 809 [2023-11-29 06:04:28,100 INFO L226 Difference]: Without dead ends: 460 [2023-11-29 06:04:28,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:04:28,103 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 1044 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 3675 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 4012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 3675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:28,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 1332 Invalid, 4012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 3675 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 06:04:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-11-29 06:04:28,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 374. [2023-11-29 06:04:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 282 states have (on average 1.5602836879432624) internal successors, (440), 289 states have internal predecessors, (440), 64 states have call successors, (64), 23 states have call predecessors, (64), 27 states have return successors, (75), 63 states have call predecessors, (75), 63 states have call successors, (75) [2023-11-29 06:04:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 579 transitions. [2023-11-29 06:04:28,138 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 579 transitions. Word has length 109 [2023-11-29 06:04:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:28,139 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 579 transitions. [2023-11-29 06:04:28,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 8 states have internal predecessors, (73), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-29 06:04:28,139 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 579 transitions. [2023-11-29 06:04:28,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-29 06:04:28,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:28,141 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:28,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:04:28,142 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:28,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:28,142 INFO L85 PathProgramCache]: Analyzing trace with hash 271481870, now seen corresponding path program 1 times [2023-11-29 06:04:28,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:28,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196986362] [2023-11-29 06:04:28,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:28,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:28,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:28,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:28,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:28,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:04:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:28,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:04:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:28,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:04:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:28,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 06:04:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:28,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 06:04:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:28,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 06:04:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:28,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:04:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:28,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 06:04:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:28,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 06:04:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:28,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 06:04:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 06:04:28,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:28,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196986362] [2023-11-29 06:04:28,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196986362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:04:28,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630637355] [2023-11-29 06:04:28,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:28,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:04:28,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:04:28,388 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:04:28,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:04:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:28,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:04:28,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:04:28,728 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:04:28,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:04:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:04:28,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630637355] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:04:28,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:04:28,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2023-11-29 06:04:28,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236684565] [2023-11-29 06:04:28,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:04:28,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:04:28,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:28,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:04:28,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:04:28,817 INFO L87 Difference]: Start difference. First operand 374 states and 579 transitions. Second operand has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 11 states have internal predecessors, (122), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2023-11-29 06:04:31,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:31,148 INFO L93 Difference]: Finished difference Result 1138 states and 1875 transitions. [2023-11-29 06:04:31,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 06:04:31,149 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 11 states have internal predecessors, (122), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 110 [2023-11-29 06:04:31,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:31,155 INFO L225 Difference]: With dead ends: 1138 [2023-11-29 06:04:31,156 INFO L226 Difference]: Without dead ends: 790 [2023-11-29 06:04:31,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2023-11-29 06:04:31,159 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 2199 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 3572 mSolverCounterSat, 676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 4248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 676 IncrementalHoareTripleChecker+Valid, 3572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:31,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2216 Valid, 1515 Invalid, 4248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [676 Valid, 3572 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 06:04:31,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2023-11-29 06:04:31,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 689. [2023-11-29 06:04:31,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 533 states have (on average 1.6097560975609757) internal successors, (858), 540 states have internal predecessors, (858), 128 states have call successors, (128), 23 states have call predecessors, (128), 27 states have return successors, (149), 127 states have call predecessors, (149), 127 states have call successors, (149) [2023-11-29 06:04:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1135 transitions. [2023-11-29 06:04:31,216 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1135 transitions. Word has length 110 [2023-11-29 06:04:31,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:31,217 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1135 transitions. [2023-11-29 06:04:31,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 8.714285714285714) internal successors, (122), 11 states have internal predecessors, (122), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2023-11-29 06:04:31,217 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1135 transitions. [2023-11-29 06:04:31,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 06:04:31,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:31,222 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:31,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:04:31,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 06:04:31,423 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:31,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:31,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1738925346, now seen corresponding path program 1 times [2023-11-29 06:04:31,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:31,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732027619] [2023-11-29 06:04:31,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:31,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:31,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:31,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:31,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:04:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:04:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:31,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:04:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 06:04:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 06:04:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 06:04:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:31,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 06:04:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:31,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 06:04:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:31,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 06:04:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:31,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 06:04:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:04:31,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:31,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732027619] [2023-11-29 06:04:31,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732027619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:31,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:04:31,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:04:31,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643525341] [2023-11-29 06:04:31,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:31,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:04:31,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:31,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:04:31,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:04:31,527 INFO L87 Difference]: Start difference. First operand 689 states and 1135 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:32,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:32,837 INFO L93 Difference]: Finished difference Result 1693 states and 2864 transitions. [2023-11-29 06:04:32,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:04:32,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2023-11-29 06:04:32,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:32,845 INFO L225 Difference]: With dead ends: 1693 [2023-11-29 06:04:32,845 INFO L226 Difference]: Without dead ends: 1072 [2023-11-29 06:04:32,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:04:32,848 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 1132 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 1635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:32,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 746 Invalid, 1635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 06:04:32,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2023-11-29 06:04:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 981. [2023-11-29 06:04:32,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 761 states have (on average 1.6228646517739815) internal successors, (1235), 768 states have internal predecessors, (1235), 192 states have call successors, (192), 23 states have call predecessors, (192), 27 states have return successors, (223), 191 states have call predecessors, (223), 191 states have call successors, (223) [2023-11-29 06:04:32,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1650 transitions. [2023-11-29 06:04:32,922 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1650 transitions. Word has length 114 [2023-11-29 06:04:32,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:32,922 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1650 transitions. [2023-11-29 06:04:32,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:32,923 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1650 transitions. [2023-11-29 06:04:32,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 06:04:32,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:32,929 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:32,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:04:32,930 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:32,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:32,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1928759165, now seen corresponding path program 1 times [2023-11-29 06:04:32,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:32,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860662354] [2023-11-29 06:04:32,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:32,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:33,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:33,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:33,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:33,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:04:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:33,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:04:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:33,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:04:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:33,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 06:04:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:33,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 06:04:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:33,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 06:04:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:33,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 06:04:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:33,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 06:04:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:33,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 06:04:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:33,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 06:04:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:04:33,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:33,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860662354] [2023-11-29 06:04:33,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860662354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:33,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:04:33,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:04:33,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717197209] [2023-11-29 06:04:33,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:33,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:04:33,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:33,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:04:33,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:04:33,075 INFO L87 Difference]: Start difference. First operand 981 states and 1650 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:34,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:34,385 INFO L93 Difference]: Finished difference Result 2410 states and 4121 transitions. [2023-11-29 06:04:34,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:04:34,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2023-11-29 06:04:34,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:34,395 INFO L225 Difference]: With dead ends: 2410 [2023-11-29 06:04:34,395 INFO L226 Difference]: Without dead ends: 1547 [2023-11-29 06:04:34,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:04:34,399 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1130 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:34,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 703 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 06:04:34,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2023-11-29 06:04:34,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1456. [2023-11-29 06:04:34,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1141 states have (on average 1.6292725679228748) internal successors, (1859), 1148 states have internal predecessors, (1859), 287 states have call successors, (287), 23 states have call predecessors, (287), 27 states have return successors, (318), 286 states have call predecessors, (318), 286 states have call successors, (318) [2023-11-29 06:04:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2464 transitions. [2023-11-29 06:04:34,514 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2464 transitions. Word has length 115 [2023-11-29 06:04:34,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:34,514 INFO L495 AbstractCegarLoop]: Abstraction has 1456 states and 2464 transitions. [2023-11-29 06:04:34,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:34,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2464 transitions. [2023-11-29 06:04:34,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 06:04:34,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:34,524 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:34,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:04:34,524 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:34,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:34,525 INFO L85 PathProgramCache]: Analyzing trace with hash -216037200, now seen corresponding path program 1 times [2023-11-29 06:04:34,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:34,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772536062] [2023-11-29 06:04:34,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:34,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:34,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:34,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:34,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:34,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:04:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:34,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:04:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:34,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:04:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:34,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 06:04:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:34,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 06:04:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:34,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 06:04:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:34,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 06:04:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:34,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 06:04:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:34,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 06:04:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:04:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:04:34,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:34,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772536062] [2023-11-29 06:04:34,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772536062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:34,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:04:34,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:04:34,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736180926] [2023-11-29 06:04:34,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:34,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:04:34,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:34,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:04:34,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:04:34,640 INFO L87 Difference]: Start difference. First operand 1456 states and 2464 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:35,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:35,913 INFO L93 Difference]: Finished difference Result 3472 states and 5999 transitions. [2023-11-29 06:04:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:04:35,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2023-11-29 06:04:35,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:35,929 INFO L225 Difference]: With dead ends: 3472 [2023-11-29 06:04:35,929 INFO L226 Difference]: Without dead ends: 2262 [2023-11-29 06:04:35,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:04:35,934 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 1128 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:35,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 705 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 06:04:35,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2023-11-29 06:04:36,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2171. [2023-11-29 06:04:36,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2171 states, 1733 states have (on average 1.634737449509521) internal successors, (2833), 1740 states have internal predecessors, (2833), 410 states have call successors, (410), 23 states have call predecessors, (410), 27 states have return successors, (457), 409 states have call predecessors, (457), 409 states have call successors, (457) [2023-11-29 06:04:36,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 3700 transitions. [2023-11-29 06:04:36,108 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 3700 transitions. Word has length 116 [2023-11-29 06:04:36,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:36,108 INFO L495 AbstractCegarLoop]: Abstraction has 2171 states and 3700 transitions. [2023-11-29 06:04:36,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:36,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 3700 transitions. [2023-11-29 06:04:36,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 06:04:36,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:36,121 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:36,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:04:36,122 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:36,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:36,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1388657764, now seen corresponding path program 1 times [2023-11-29 06:04:36,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:36,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465664511] [2023-11-29 06:04:36,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:36,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:36,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:36,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:36,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:36,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:04:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:36,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:04:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:04:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:36,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 06:04:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:36,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 06:04:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:36,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 06:04:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:36,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 06:04:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:36,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 06:04:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:36,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 06:04:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:36,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 06:04:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:04:36,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:36,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465664511] [2023-11-29 06:04:36,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465664511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:36,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:04:36,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:04:36,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741450602] [2023-11-29 06:04:36,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:36,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:04:36,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:36,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:04:36,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:04:36,232 INFO L87 Difference]: Start difference. First operand 2171 states and 3700 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:37,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:37,534 INFO L93 Difference]: Finished difference Result 5114 states and 8912 transitions. [2023-11-29 06:04:37,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:04:37,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2023-11-29 06:04:37,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:37,554 INFO L225 Difference]: With dead ends: 5114 [2023-11-29 06:04:37,554 INFO L226 Difference]: Without dead ends: 3398 [2023-11-29 06:04:37,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:04:37,561 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1126 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:37,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 702 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 06:04:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3398 states. [2023-11-29 06:04:37,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3398 to 3307. [2023-11-29 06:04:37,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 2690 states have (on average 1.6382899628252787) internal successors, (4407), 2697 states have internal predecessors, (4407), 589 states have call successors, (589), 23 states have call predecessors, (589), 27 states have return successors, (662), 588 states have call predecessors, (662), 588 states have call successors, (662) [2023-11-29 06:04:37,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 5658 transitions. [2023-11-29 06:04:37,788 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 5658 transitions. Word has length 117 [2023-11-29 06:04:37,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:37,788 INFO L495 AbstractCegarLoop]: Abstraction has 3307 states and 5658 transitions. [2023-11-29 06:04:37,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:37,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 5658 transitions. [2023-11-29 06:04:37,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 06:04:37,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:37,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:37,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 06:04:37,797 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:37,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:37,797 INFO L85 PathProgramCache]: Analyzing trace with hash 284689556, now seen corresponding path program 1 times [2023-11-29 06:04:37,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:37,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789799259] [2023-11-29 06:04:37,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:37,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:37,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:37,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:37,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:37,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:04:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:37,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:04:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:37,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:04:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:37,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 06:04:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:37,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 06:04:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 06:04:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:37,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 06:04:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:37,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 06:04:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:37,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 06:04:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:37,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 06:04:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:04:37,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:37,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789799259] [2023-11-29 06:04:37,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789799259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:37,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:04:37,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:04:37,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621524707] [2023-11-29 06:04:37,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:37,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:04:37,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:37,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:04:37,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:04:37,895 INFO L87 Difference]: Start difference. First operand 3307 states and 5658 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:39,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:39,334 INFO L93 Difference]: Finished difference Result 8069 states and 14110 transitions. [2023-11-29 06:04:39,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:04:39,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2023-11-29 06:04:39,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:39,375 INFO L225 Difference]: With dead ends: 8069 [2023-11-29 06:04:39,375 INFO L226 Difference]: Without dead ends: 5456 [2023-11-29 06:04:39,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:04:39,385 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 1124 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:39,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 753 Invalid, 1650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 06:04:39,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5456 states. [2023-11-29 06:04:39,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5456 to 5365. [2023-11-29 06:04:39,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5365 states, 4372 states have (on average 1.630832570905764) internal successors, (7130), 4379 states have internal predecessors, (7130), 965 states have call successors, (965), 23 states have call predecessors, (965), 27 states have return successors, (1082), 964 states have call predecessors, (1082), 964 states have call successors, (1082) [2023-11-29 06:04:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5365 states to 5365 states and 9177 transitions. [2023-11-29 06:04:39,782 INFO L78 Accepts]: Start accepts. Automaton has 5365 states and 9177 transitions. Word has length 118 [2023-11-29 06:04:39,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:39,782 INFO L495 AbstractCegarLoop]: Abstraction has 5365 states and 9177 transitions. [2023-11-29 06:04:39,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:39,783 INFO L276 IsEmpty]: Start isEmpty. Operand 5365 states and 9177 transitions. [2023-11-29 06:04:39,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 06:04:39,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:39,805 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:39,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:04:39,805 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:39,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:39,806 INFO L85 PathProgramCache]: Analyzing trace with hash -94214216, now seen corresponding path program 1 times [2023-11-29 06:04:39,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:39,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343228273] [2023-11-29 06:04:39,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:39,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:39,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:39,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:39,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:39,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:04:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:39,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:04:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:39,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:04:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:39,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 06:04:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:39,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:04:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:39,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 06:04:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 06:04:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:39,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 06:04:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:39,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 06:04:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:39,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 06:04:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:04:39,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:39,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343228273] [2023-11-29 06:04:39,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343228273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:39,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:04:39,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:04:39,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141564394] [2023-11-29 06:04:39,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:39,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:04:39,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:39,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:04:39,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:04:39,921 INFO L87 Difference]: Start difference. First operand 5365 states and 9177 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:41,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:41,334 INFO L93 Difference]: Finished difference Result 13274 states and 23194 transitions. [2023-11-29 06:04:41,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:04:41,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2023-11-29 06:04:41,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:41,376 INFO L225 Difference]: With dead ends: 13274 [2023-11-29 06:04:41,376 INFO L226 Difference]: Without dead ends: 8989 [2023-11-29 06:04:41,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:04:41,388 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1122 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:41,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 716 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 06:04:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8989 states. [2023-11-29 06:04:41,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8989 to 8898. [2023-11-29 06:04:41,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8898 states, 7299 states have (on average 1.628579257432525) internal successors, (11887), 7306 states have internal predecessors, (11887), 1571 states have call successors, (1571), 23 states have call predecessors, (1571), 27 states have return successors, (1766), 1570 states have call predecessors, (1766), 1570 states have call successors, (1766) [2023-11-29 06:04:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8898 states to 8898 states and 15224 transitions. [2023-11-29 06:04:41,920 INFO L78 Accepts]: Start accepts. Automaton has 8898 states and 15224 transitions. Word has length 119 [2023-11-29 06:04:41,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:41,921 INFO L495 AbstractCegarLoop]: Abstraction has 8898 states and 15224 transitions. [2023-11-29 06:04:41,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:41,922 INFO L276 IsEmpty]: Start isEmpty. Operand 8898 states and 15224 transitions. [2023-11-29 06:04:41,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 06:04:41,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:41,944 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:41,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 06:04:41,945 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:41,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:41,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1189824782, now seen corresponding path program 1 times [2023-11-29 06:04:41,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:41,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710417769] [2023-11-29 06:04:41,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:41,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:41,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:42,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:42,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:42,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:04:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:42,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:04:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:42,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:04:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:42,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 06:04:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:42,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 06:04:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:42,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 06:04:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:42,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 06:04:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:42,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 06:04:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:42,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 06:04:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:42,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 06:04:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:04:42,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:42,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710417769] [2023-11-29 06:04:42,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710417769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:42,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:04:42,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:04:42,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720459909] [2023-11-29 06:04:42,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:42,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:04:42,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:42,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:04:42,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:04:42,049 INFO L87 Difference]: Start difference. First operand 8898 states and 15224 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:43,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:43,662 INFO L93 Difference]: Finished difference Result 23046 states and 40223 transitions. [2023-11-29 06:04:43,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:04:43,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2023-11-29 06:04:43,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:43,704 INFO L225 Difference]: With dead ends: 23046 [2023-11-29 06:04:43,704 INFO L226 Difference]: Without dead ends: 15661 [2023-11-29 06:04:43,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:04:43,724 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 1120 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 1635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:43,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 716 Invalid, 1635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 06:04:43,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15661 states. [2023-11-29 06:04:44,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15661 to 15570. [2023-11-29 06:04:44,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15570 states, 12768 states have (on average 1.619360902255639) internal successors, (20676), 12775 states have internal predecessors, (20676), 2774 states have call successors, (2774), 23 states have call predecessors, (2774), 27 states have return successors, (3113), 2773 states have call predecessors, (3113), 2773 states have call successors, (3113) [2023-11-29 06:04:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15570 states to 15570 states and 26563 transitions. [2023-11-29 06:04:44,339 INFO L78 Accepts]: Start accepts. Automaton has 15570 states and 26563 transitions. Word has length 120 [2023-11-29 06:04:44,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:44,339 INFO L495 AbstractCegarLoop]: Abstraction has 15570 states and 26563 transitions. [2023-11-29 06:04:44,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 15570 states and 26563 transitions. [2023-11-29 06:04:44,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 06:04:44,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:44,361 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:44,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:04:44,361 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:44,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:44,361 INFO L85 PathProgramCache]: Analyzing trace with hash 914824247, now seen corresponding path program 1 times [2023-11-29 06:04:44,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:44,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509752150] [2023-11-29 06:04:44,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:44,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:44,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:44,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:44,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:44,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:04:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:44,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:04:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:44,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:04:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:44,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 06:04:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:44,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 06:04:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:44,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-29 06:04:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:44,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 06:04:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 06:04:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:44,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 06:04:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:44,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 06:04:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:44,451 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:04:44,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:44,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509752150] [2023-11-29 06:04:44,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509752150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:44,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:04:44,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:04:44,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012104734] [2023-11-29 06:04:44,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:44,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:04:44,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:44,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:04:44,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:04:44,454 INFO L87 Difference]: Start difference. First operand 15570 states and 26563 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:46,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:46,592 INFO L93 Difference]: Finished difference Result 41213 states and 71821 transitions. [2023-11-29 06:04:46,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:04:46,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2023-11-29 06:04:46,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:46,690 INFO L225 Difference]: With dead ends: 41213 [2023-11-29 06:04:46,690 INFO L226 Difference]: Without dead ends: 27776 [2023-11-29 06:04:46,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:04:46,719 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1118 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:46,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 703 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 06:04:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27776 states. [2023-11-29 06:04:47,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27776 to 27685. [2023-11-29 06:04:47,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27685 states, 22844 states have (on average 1.6154351251969883) internal successors, (36903), 22851 states have internal predecessors, (36903), 4813 states have call successors, (4813), 23 states have call predecessors, (4813), 27 states have return successors, (5426), 4812 states have call predecessors, (5426), 4812 states have call successors, (5426) [2023-11-29 06:04:48,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27685 states to 27685 states and 47142 transitions. [2023-11-29 06:04:48,057 INFO L78 Accepts]: Start accepts. Automaton has 27685 states and 47142 transitions. Word has length 121 [2023-11-29 06:04:48,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:48,057 INFO L495 AbstractCegarLoop]: Abstraction has 27685 states and 47142 transitions. [2023-11-29 06:04:48,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:48,058 INFO L276 IsEmpty]: Start isEmpty. Operand 27685 states and 47142 transitions. [2023-11-29 06:04:48,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 06:04:48,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:48,083 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:48,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 06:04:48,083 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:48,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:48,084 INFO L85 PathProgramCache]: Analyzing trace with hash 856132848, now seen corresponding path program 1 times [2023-11-29 06:04:48,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:48,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668568952] [2023-11-29 06:04:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:48,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:48,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:48,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:48,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:48,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:04:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:48,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:04:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:48,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:04:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:48,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 06:04:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:48,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 06:04:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 06:04:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:48,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 06:04:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:48,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 06:04:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:48,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 06:04:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:48,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 06:04:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:04:48,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:48,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668568952] [2023-11-29 06:04:48,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668568952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:48,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:04:48,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:04:48,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591621646] [2023-11-29 06:04:48,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:48,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:04:48,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:48,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:04:48,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:04:48,199 INFO L87 Difference]: Start difference. First operand 27685 states and 47142 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:50,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:50,961 INFO L93 Difference]: Finished difference Result 75405 states and 130615 transitions. [2023-11-29 06:04:50,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:04:50,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2023-11-29 06:04:50,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:51,076 INFO L225 Difference]: With dead ends: 75405 [2023-11-29 06:04:51,076 INFO L226 Difference]: Without dead ends: 50600 [2023-11-29 06:04:51,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:04:51,131 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1116 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 1241 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 1241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:51,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 710 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 1241 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 06:04:51,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50600 states. [2023-11-29 06:04:53,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50600 to 50509. [2023-11-29 06:04:53,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50509 states, 41953 states have (on average 1.6101589874383238) internal successors, (67551), 41960 states have internal predecessors, (67551), 8528 states have call successors, (8528), 23 states have call predecessors, (8528), 27 states have return successors, (9673), 8527 states have call predecessors, (9673), 8527 states have call successors, (9673) [2023-11-29 06:04:53,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50509 states to 50509 states and 85752 transitions. [2023-11-29 06:04:53,375 INFO L78 Accepts]: Start accepts. Automaton has 50509 states and 85752 transitions. Word has length 122 [2023-11-29 06:04:53,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:04:53,376 INFO L495 AbstractCegarLoop]: Abstraction has 50509 states and 85752 transitions. [2023-11-29 06:04:53,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:53,376 INFO L276 IsEmpty]: Start isEmpty. Operand 50509 states and 85752 transitions. [2023-11-29 06:04:53,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 06:04:53,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:04:53,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:53,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 06:04:53,406 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:04:53,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:53,406 INFO L85 PathProgramCache]: Analyzing trace with hash -789808905, now seen corresponding path program 1 times [2023-11-29 06:04:53,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:53,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381859156] [2023-11-29 06:04:53,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:53,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:53,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:04:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:53,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:04:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:53,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:04:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:53,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:04:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:53,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:04:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:53,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:04:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:53,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 06:04:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:53,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 06:04:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:53,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-29 06:04:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:53,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 06:04:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:53,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 06:04:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:53,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 06:04:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:53,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 06:04:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:04:53,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:53,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381859156] [2023-11-29 06:04:53,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381859156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:53,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:04:53,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:04:53,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782408805] [2023-11-29 06:04:53,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:53,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:04:53,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:53,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:04:53,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:04:53,521 INFO L87 Difference]: Start difference. First operand 50509 states and 85752 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:04:57,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:04:57,097 INFO L93 Difference]: Finished difference Result 94152 states and 163521 transitions. [2023-11-29 06:04:57,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:04:57,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2023-11-29 06:04:57,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:04:57,354 INFO L225 Difference]: With dead ends: 94152 [2023-11-29 06:04:57,354 INFO L226 Difference]: Without dead ends: 93980 [2023-11-29 06:04:57,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:04:57,383 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1114 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:04:57,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 703 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 06:04:57,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93980 states. [2023-11-29 06:05:00,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93980 to 93889. [2023-11-29 06:05:00,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93889 states, 78534 states have (on average 1.6033692413476965) internal successors, (125919), 78541 states have internal predecessors, (125919), 15327 states have call successors, (15327), 23 states have call predecessors, (15327), 27 states have return successors, (17518), 15326 states have call predecessors, (17518), 15326 states have call successors, (17518) [2023-11-29 06:05:00,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93889 states to 93889 states and 158764 transitions. [2023-11-29 06:05:00,956 INFO L78 Accepts]: Start accepts. Automaton has 93889 states and 158764 transitions. Word has length 123 [2023-11-29 06:05:00,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:05:00,957 INFO L495 AbstractCegarLoop]: Abstraction has 93889 states and 158764 transitions. [2023-11-29 06:05:00,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-29 06:05:00,957 INFO L276 IsEmpty]: Start isEmpty. Operand 93889 states and 158764 transitions. [2023-11-29 06:05:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:05:00,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:05:00,983 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:00,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 06:05:00,984 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:05:00,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:00,984 INFO L85 PathProgramCache]: Analyzing trace with hash 288645361, now seen corresponding path program 1 times [2023-11-29 06:05:00,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:00,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739227773] [2023-11-29 06:05:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:00,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:01,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:05:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:01,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:05:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:01,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:05:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:01,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:05:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:01,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:05:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:01,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:05:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:01,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:05:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 06:05:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:01,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 06:05:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:01,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 06:05:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:01,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 06:05:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:01,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 06:05:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:01,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 06:05:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:01,456 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:05:01,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:01,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739227773] [2023-11-29 06:05:01,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739227773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:05:01,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:05:01,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-29 06:05:01,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933595725] [2023-11-29 06:05:01,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:05:01,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:05:01,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:01,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:05:01,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:05:01,458 INFO L87 Difference]: Start difference. First operand 93889 states and 158764 transitions. Second operand has 18 states, 16 states have (on average 5.1875) internal successors, (83), 12 states have internal predecessors, (83), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-29 06:05:12,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:05:12,508 INFO L93 Difference]: Finished difference Result 187565 states and 329112 transitions. [2023-11-29 06:05:12,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-29 06:05:12,509 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.1875) internal successors, (83), 12 states have internal predecessors, (83), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 124 [2023-11-29 06:05:12,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:05:13,132 INFO L225 Difference]: With dead ends: 187565 [2023-11-29 06:05:13,132 INFO L226 Difference]: Without dead ends: 187398 [2023-11-29 06:05:13,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=922, Invalid=4334, Unknown=0, NotChecked=0, Total=5256 [2023-11-29 06:05:13,178 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 4101 mSDsluCounter, 2090 mSDsCounter, 0 mSdLazyCounter, 7004 mSolverCounterSat, 1317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4112 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 8321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1317 IncrementalHoareTripleChecker+Valid, 7004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:05:13,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4112 Valid, 2303 Invalid, 8321 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1317 Valid, 7004 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 06:05:13,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187398 states. [2023-11-29 06:05:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187398 to 187002. [2023-11-29 06:05:20,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187002 states, 156479 states have (on average 1.6042791684507187) internal successors, (251036), 156384 states have internal predecessors, (251036), 30451 states have call successors, (30451), 62 states have call predecessors, (30451), 71 states have return successors, (38109), 30561 states have call predecessors, (38109), 30448 states have call successors, (38109) [2023-11-29 06:05:21,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187002 states to 187002 states and 319596 transitions. [2023-11-29 06:05:21,223 INFO L78 Accepts]: Start accepts. Automaton has 187002 states and 319596 transitions. Word has length 124 [2023-11-29 06:05:21,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:05:21,223 INFO L495 AbstractCegarLoop]: Abstraction has 187002 states and 319596 transitions. [2023-11-29 06:05:21,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.1875) internal successors, (83), 12 states have internal predecessors, (83), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-29 06:05:21,223 INFO L276 IsEmpty]: Start isEmpty. Operand 187002 states and 319596 transitions. [2023-11-29 06:05:21,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 06:05:21,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:05:21,274 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:21,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 06:05:21,274 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:05:21,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:21,275 INFO L85 PathProgramCache]: Analyzing trace with hash -297384943, now seen corresponding path program 1 times [2023-11-29 06:05:21,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:21,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602025839] [2023-11-29 06:05:21,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:21,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:21,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:05:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:21,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:05:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:21,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:05:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:05:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:21,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:05:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:21,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:05:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:21,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:05:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:21,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 06:05:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:21,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 06:05:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:21,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 06:05:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:21,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 06:05:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:21,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 06:05:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:21,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 06:05:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:05:21,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:21,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602025839] [2023-11-29 06:05:21,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602025839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:05:21,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:05:21,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 06:05:21,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138735238] [2023-11-29 06:05:21,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:05:21,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:05:21,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:21,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:05:21,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:05:21,515 INFO L87 Difference]: Start difference. First operand 187002 states and 319596 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 8 states have internal predecessors, (84), 5 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-29 06:05:30,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:05:30,443 INFO L93 Difference]: Finished difference Result 188174 states and 327896 transitions. [2023-11-29 06:05:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 06:05:30,444 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 8 states have internal predecessors, (84), 5 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 125 [2023-11-29 06:05:30,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:05:31,000 INFO L225 Difference]: With dead ends: 188174 [2023-11-29 06:05:31,000 INFO L226 Difference]: Without dead ends: 187352 [2023-11-29 06:05:31,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=286, Invalid=974, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 06:05:31,046 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 2055 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 4097 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2070 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 4798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 4097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:05:31,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2070 Valid, 1412 Invalid, 4798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [701 Valid, 4097 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 06:05:31,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187352 states. [2023-11-29 06:05:38,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187352 to 187093. [2023-11-29 06:05:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187093 states, 156545 states have (on average 1.6041968762975503) internal successors, (251129), 156455 states have internal predecessors, (251129), 30473 states have call successors, (30473), 65 states have call predecessors, (30473), 74 states have return successors, (38140), 30581 states have call predecessors, (38140), 30470 states have call successors, (38140) [2023-11-29 06:05:39,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187093 states to 187093 states and 319742 transitions. [2023-11-29 06:05:39,389 INFO L78 Accepts]: Start accepts. Automaton has 187093 states and 319742 transitions. Word has length 125 [2023-11-29 06:05:39,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:05:39,390 INFO L495 AbstractCegarLoop]: Abstraction has 187093 states and 319742 transitions. [2023-11-29 06:05:39,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 8 states have internal predecessors, (84), 5 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-29 06:05:39,390 INFO L276 IsEmpty]: Start isEmpty. Operand 187093 states and 319742 transitions. [2023-11-29 06:05:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 06:05:39,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:05:39,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:05:39,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 06:05:39,441 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:05:39,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:05:39,441 INFO L85 PathProgramCache]: Analyzing trace with hash 57639327, now seen corresponding path program 1 times [2023-11-29 06:05:39,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:05:39,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289424377] [2023-11-29 06:05:39,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:05:39,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:05:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:40,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:05:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:40,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:05:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:40,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:05:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:40,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:05:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:05:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:40,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:05:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:40,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:05:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:40,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 06:05:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:40,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 06:05:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 06:05:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:40,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 06:05:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:40,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 06:05:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:40,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 06:05:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:05:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 06:05:40,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:05:40,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289424377] [2023-11-29 06:05:40,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289424377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:05:40,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:05:40,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-29 06:05:40,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875229320] [2023-11-29 06:05:40,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:05:40,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:05:40,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:05:40,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:05:40,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:05:40,254 INFO L87 Difference]: Start difference. First operand 187093 states and 319742 transitions. Second operand has 18 states, 16 states have (on average 5.25) internal successors, (84), 12 states have internal predecessors, (84), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-29 06:05:57,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:05:57,993 INFO L93 Difference]: Finished difference Result 372277 states and 660060 transitions. [2023-11-29 06:05:57,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-29 06:05:57,993 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.25) internal successors, (84), 12 states have internal predecessors, (84), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 125 [2023-11-29 06:05:57,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:05:59,164 INFO L225 Difference]: With dead ends: 372277 [2023-11-29 06:05:59,164 INFO L226 Difference]: Without dead ends: 371829 [2023-11-29 06:05:59,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1544 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=961, Invalid=4441, Unknown=0, NotChecked=0, Total=5402 [2023-11-29 06:05:59,262 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 3797 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 7612 mSolverCounterSat, 1191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3797 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 8803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1191 IncrementalHoareTripleChecker+Valid, 7612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:05:59,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3797 Valid, 1892 Invalid, 8803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1191 Valid, 7612 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 06:05:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371829 states. [2023-11-29 06:06:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371829 to 370944. [2023-11-29 06:06:17,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370944 states, 310482 states have (on average 1.6055874414619848) internal successors, (498506), 310133 states have internal predecessors, (498506), 60297 states have call successors, (60297), 143 states have call predecessors, (60297), 164 states have return successors, (84161), 60688 states have call predecessors, (84161), 60290 states have call successors, (84161) [2023-11-29 06:06:19,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370944 states to 370944 states and 642964 transitions. [2023-11-29 06:06:19,516 INFO L78 Accepts]: Start accepts. Automaton has 370944 states and 642964 transitions. Word has length 125 [2023-11-29 06:06:19,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:06:19,516 INFO L495 AbstractCegarLoop]: Abstraction has 370944 states and 642964 transitions. [2023-11-29 06:06:19,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.25) internal successors, (84), 12 states have internal predecessors, (84), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2023-11-29 06:06:19,517 INFO L276 IsEmpty]: Start isEmpty. Operand 370944 states and 642964 transitions. [2023-11-29 06:06:19,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 06:06:19,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:06:19,612 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:06:19,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 06:06:19,612 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:06:19,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:06:19,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1302403808, now seen corresponding path program 1 times [2023-11-29 06:06:19,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:06:19,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123701808] [2023-11-29 06:06:19,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:19,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:06:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:19,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 06:06:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:19,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:06:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:19,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:06:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:19,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:06:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:19,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 06:06:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:19,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 06:06:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:19,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 06:06:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:19,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 06:06:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:19,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 06:06:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:19,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 06:06:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:19,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 06:06:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:19,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 06:06:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:19,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 06:06:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:19,861 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 06:06:19,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:06:19,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123701808] [2023-11-29 06:06:19,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123701808] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:06:19,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495610839] [2023-11-29 06:06:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:19,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:06:19,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:06:19,864 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:06:19,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb36db68-04be-4c5e-81dc-ceef5b90a045/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:06:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:20,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 06:06:20,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:06:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 06:06:20,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:06:20,611 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 06:06:20,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495610839] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:06:20,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:06:20,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2023-11-29 06:06:20,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600097081] [2023-11-29 06:06:20,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:06:20,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 06:06:20,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:06:20,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 06:06:20,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2023-11-29 06:06:20,615 INFO L87 Difference]: Start difference. First operand 370944 states and 642964 transitions. Second operand has 27 states, 27 states have (on average 7.703703703703703) internal successors, (208), 20 states have internal predecessors, (208), 5 states have call successors, (40), 11 states have call predecessors, (40), 12 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) [2023-11-29 06:07:02,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:07:02,721 INFO L93 Difference]: Finished difference Result 1105124 states and 1988907 transitions. [2023-11-29 06:07:02,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-29 06:07:02,722 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.703703703703703) internal successors, (208), 20 states have internal predecessors, (208), 5 states have call successors, (40), 11 states have call predecessors, (40), 12 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) Word has length 125 [2023-11-29 06:07:02,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:07:07,227 INFO L225 Difference]: With dead ends: 1105124 [2023-11-29 06:07:07,228 INFO L226 Difference]: Without dead ends: 1103801 [2023-11-29 06:07:07,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=646, Invalid=2660, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 06:07:07,533 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 3555 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 6418 mSolverCounterSat, 1085 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3570 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 7503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1085 IncrementalHoareTripleChecker+Valid, 6418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:07:07,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3570 Valid, 3161 Invalid, 7503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1085 Valid, 6418 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 06:07:08,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103801 states. [2023-11-29 06:07:56,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103801 to 741971. [2023-11-29 06:07:57,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741971 states, 621030 states have (on average 1.6055520667278553) internal successors, (997096), 620328 states have internal predecessors, (997096), 120592 states have call successors, (120592), 292 states have call predecessors, (120592), 348 states have return successors, (189684), 121392 states have call predecessors, (189684), 120578 states have call successors, (189684)