./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 09:02:25,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 09:02:25,156 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 09:02:25,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 09:02:25,161 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 09:02:25,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 09:02:25,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 09:02:25,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 09:02:25,183 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 09:02:25,184 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 09:02:25,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 09:02:25,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 09:02:25,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 09:02:25,184 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 09:02:25,184 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 09:02:25,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 09:02:25,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 09:02:25,185 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 09:02:25,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 09:02:25,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 09:02:25,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 09:02:25,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 09:02:25,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 09:02:25,185 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 09:02:25,185 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 09:02:25,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 09:02:25,185 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 09:02:25,185 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 09:02:25,186 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 09:02:25,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 09:02:25,186 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 09:02:25,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 09:02:25,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:02:25,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 09:02:25,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 09:02:25,186 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 09:02:25,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 09:02:25,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:02:25,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 09:02:25,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 09:02:25,187 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 09:02:25,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 09:02:25,187 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 09:02:25,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 09:02:25,187 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 09:02:25,187 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 09:02:25,187 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 09:02:25,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 09:02:25,187 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 [2024-12-02 09:02:25,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 09:02:25,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 09:02:25,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 09:02:25,439 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 09:02:25,440 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 09:02:25,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2024-12-02 09:02:28,123 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/data/ba37acc7b/bd537cccbb1a48e9bb0dbca2dc7fc5a0/FLAG9f4358e36 [2024-12-02 09:02:28,440 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 09:02:28,440 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2024-12-02 09:02:28,456 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/data/ba37acc7b/bd537cccbb1a48e9bb0dbca2dc7fc5a0/FLAG9f4358e36 [2024-12-02 09:02:28,694 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/data/ba37acc7b/bd537cccbb1a48e9bb0dbca2dc7fc5a0 [2024-12-02 09:02:28,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 09:02:28,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 09:02:28,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 09:02:28,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 09:02:28,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 09:02:28,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:02:28" (1/1) ... [2024-12-02 09:02:28,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f8e8a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:02:28, skipping insertion in model container [2024-12-02 09:02:28,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:02:28" (1/1) ... [2024-12-02 09:02:28,741 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 09:02:29,090 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c[32786,32799] [2024-12-02 09:02:29,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 09:02:29,166 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 09:02:29,172 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"VerifyForward_spec.i","") [48] [2024-12-02 09:02:29,173 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [95] [2024-12-02 09:02:29,173 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [386] [2024-12-02 09:02:29,173 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [532] [2024-12-02 09:02:29,173 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [898] [2024-12-02 09:02:29,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1300] [2024-12-02 09:02:29,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1622] [2024-12-02 09:02:29,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [1631] [2024-12-02 09:02:29,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1648] [2024-12-02 09:02:29,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1683] [2024-12-02 09:02:29,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2752] [2024-12-02 09:02:29,236 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c[32786,32799] [2024-12-02 09:02:29,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 09:02:29,295 INFO L204 MainTranslator]: Completed translation [2024-12-02 09:02:29,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:02:29 WrapperNode [2024-12-02 09:02:29,296 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 09:02:29,296 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 09:02:29,297 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 09:02:29,297 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 09:02:29,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:02:29" (1/1) ... [2024-12-02 09:02:29,322 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:02:29" (1/1) ... [2024-12-02 09:02:29,355 INFO L138 Inliner]: procedures = 128, calls = 197, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 865 [2024-12-02 09:02:29,355 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 09:02:29,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 09:02:29,356 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 09:02:29,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 09:02:29,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:02:29" (1/1) ... [2024-12-02 09:02:29,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:02:29" (1/1) ... [2024-12-02 09:02:29,370 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:02:29" (1/1) ... [2024-12-02 09:02:29,391 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-12-02 09:02:29,391 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:02:29" (1/1) ... [2024-12-02 09:02:29,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:02:29" (1/1) ... [2024-12-02 09:02:29,406 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:02:29" (1/1) ... [2024-12-02 09:02:29,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:02:29" (1/1) ... [2024-12-02 09:02:29,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:02:29" (1/1) ... [2024-12-02 09:02:29,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:02:29" (1/1) ... [2024-12-02 09:02:29,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:02:29" (1/1) ... [2024-12-02 09:02:29,428 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 09:02:29,429 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 09:02:29,429 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 09:02:29,429 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 09:02:29,430 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:02:29" (1/1) ... [2024-12-02 09:02:29,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 09:02:29,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:02:29,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 09:02:29,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 09:02:29,495 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-12-02 09:02:29,496 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-12-02 09:02:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-12-02 09:02:29,496 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-12-02 09:02:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-12-02 09:02:29,496 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-12-02 09:02:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-12-02 09:02:29,496 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-12-02 09:02:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-12-02 09:02:29,496 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-12-02 09:02:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-12-02 09:02:29,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-12-02 09:02:29,496 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-12-02 09:02:29,497 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-12-02 09:02:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-12-02 09:02:29,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-12-02 09:02:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-12-02 09:02:29,497 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-12-02 09:02:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-12-02 09:02:29,497 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-12-02 09:02:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-12-02 09:02:29,497 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-12-02 09:02:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-12-02 09:02:29,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-12-02 09:02:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 09:02:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-12-02 09:02:29,497 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-12-02 09:02:29,497 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-12-02 09:02:29,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-12-02 09:02:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-12-02 09:02:29,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-12-02 09:02:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-12-02 09:02:29,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-12-02 09:02:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-12-02 09:02:29,498 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-12-02 09:02:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2024-12-02 09:02:29,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2024-12-02 09:02:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-12-02 09:02:29,498 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-12-02 09:02:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-12-02 09:02:29,498 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-12-02 09:02:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-12-02 09:02:29,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-12-02 09:02:29,498 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-12-02 09:02:29,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-12-02 09:02:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 09:02:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 09:02:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 09:02:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 09:02:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-12-02 09:02:29,499 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-12-02 09:02:29,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 09:02:29,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 09:02:29,664 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 09:02:29,666 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 09:02:30,364 INFO L? ?]: Removed 406 outVars from TransFormulas that were not future-live. [2024-12-02 09:02:30,364 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 09:02:30,380 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 09:02:30,380 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 09:02:30,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:02:30 BoogieIcfgContainer [2024-12-02 09:02:30,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 09:02:30,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 09:02:30,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 09:02:30,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 09:02:30,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:02:28" (1/3) ... [2024-12-02 09:02:30,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382eb09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:02:30, skipping insertion in model container [2024-12-02 09:02:30,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:02:29" (2/3) ... [2024-12-02 09:02:30,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382eb09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:02:30, skipping insertion in model container [2024-12-02 09:02:30,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:02:30" (3/3) ... [2024-12-02 09:02:30,390 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec27_product28.cil.c [2024-12-02 09:02:30,419 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 09:02:30,421 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec27_product28.cil.c that has 24 procedures, 333 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 09:02:30,474 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 09:02:30,484 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3d371eec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 09:02:30,484 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 09:02:30,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 333 states, 257 states have (on average 1.5214007782101167) internal successors, (391), 261 states have internal predecessors, (391), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-12-02 09:02:30,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-12-02 09:02:30,503 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:30,504 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:30,504 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:30,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:30,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1662804301, now seen corresponding path program 1 times [2024-12-02 09:02:30,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:30,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121167008] [2024-12-02 09:02:30,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:30,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 09:02:31,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:31,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121167008] [2024-12-02 09:02:31,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121167008] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:02:31,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533120357] [2024-12-02 09:02:31,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:31,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:31,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:02:31,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:02:31,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 09:02:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:31,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 09:02:31,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:02:31,485 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 09:02:31,485 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:02:31,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533120357] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:31,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 09:02:31,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 09:02:31,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904668291] [2024-12-02 09:02:31,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:31,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:02:31,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:31,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:02:31,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 09:02:31,508 INFO L87 Difference]: Start difference. First operand has 333 states, 257 states have (on average 1.5214007782101167) internal successors, (391), 261 states have internal predecessors, (391), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:31,567 INFO L93 Difference]: Finished difference Result 520 states and 754 transitions. [2024-12-02 09:02:31,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:02:31,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2024-12-02 09:02:31,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:31,580 INFO L225 Difference]: With dead ends: 520 [2024-12-02 09:02:31,580 INFO L226 Difference]: Without dead ends: 328 [2024-12-02 09:02:31,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 09:02:31,586 INFO L435 NwaCegarLoop]: 487 mSDtfsCounter, 1 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:31,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 971 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:02:31,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-12-02 09:02:31,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 327. [2024-12-02 09:02:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 252 states have (on average 1.5119047619047619) internal successors, (381), 255 states have internal predecessors, (381), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-12-02 09:02:31,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 482 transitions. [2024-12-02 09:02:31,636 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 482 transitions. Word has length 139 [2024-12-02 09:02:31,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:31,637 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 482 transitions. [2024-12-02 09:02:31,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:31,638 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 482 transitions. [2024-12-02 09:02:31,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 09:02:31,643 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:31,643 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:31,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 09:02:31,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:31,844 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:31,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:31,845 INFO L85 PathProgramCache]: Analyzing trace with hash 553048363, now seen corresponding path program 1 times [2024-12-02 09:02:31,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:31,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838185501] [2024-12-02 09:02:31,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:31,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 09:02:32,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:32,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838185501] [2024-12-02 09:02:32,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838185501] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:02:32,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50457930] [2024-12-02 09:02:32,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:32,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:32,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:02:32,207 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:02:32,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 09:02:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:32,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 09:02:32,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:02:32,602 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 09:02:32,602 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:02:32,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50457930] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:32,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 09:02:32,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 09:02:32,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875019360] [2024-12-02 09:02:32,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:32,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:02:32,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:32,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:02:32,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 09:02:32,606 INFO L87 Difference]: Start difference. First operand 327 states and 482 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:32,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:32,651 INFO L93 Difference]: Finished difference Result 679 states and 1015 transitions. [2024-12-02 09:02:32,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:02:32,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 144 [2024-12-02 09:02:32,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:32,655 INFO L225 Difference]: With dead ends: 679 [2024-12-02 09:02:32,655 INFO L226 Difference]: Without dead ends: 378 [2024-12-02 09:02:32,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 09:02:32,658 INFO L435 NwaCegarLoop]: 487 mSDtfsCounter, 99 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:32,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 921 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:02:32,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-12-02 09:02:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 370. [2024-12-02 09:02:32,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 284 states have (on average 1.528169014084507) internal successors, (434), 287 states have internal predecessors, (434), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-12-02 09:02:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 557 transitions. [2024-12-02 09:02:32,692 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 557 transitions. Word has length 144 [2024-12-02 09:02:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:32,692 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 557 transitions. [2024-12-02 09:02:32,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:32,693 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 557 transitions. [2024-12-02 09:02:32,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 09:02:32,697 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:32,697 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:32,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 09:02:32,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:32,897 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:32,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:32,898 INFO L85 PathProgramCache]: Analyzing trace with hash -781334428, now seen corresponding path program 1 times [2024-12-02 09:02:32,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:32,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958256916] [2024-12-02 09:02:32,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:32,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 09:02:33,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:33,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958256916] [2024-12-02 09:02:33,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958256916] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:02:33,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991198091] [2024-12-02 09:02:33,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:33,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:33,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:02:33,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:02:33,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 09:02:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:33,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 09:02:33,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:02:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 09:02:33,523 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:02:33,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991198091] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:33,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 09:02:33,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-02 09:02:33,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926085992] [2024-12-02 09:02:33,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:33,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 09:02:33,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:33,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 09:02:33,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 09:02:33,525 INFO L87 Difference]: Start difference. First operand 370 states and 557 transitions. Second operand has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 09:02:33,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:33,593 INFO L93 Difference]: Finished difference Result 731 states and 1104 transitions. [2024-12-02 09:02:33,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 09:02:33,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 145 [2024-12-02 09:02:33,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:33,598 INFO L225 Difference]: With dead ends: 731 [2024-12-02 09:02:33,598 INFO L226 Difference]: Without dead ends: 372 [2024-12-02 09:02:33,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 09:02:33,600 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 2 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:33,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1881 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:02:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-12-02 09:02:33,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2024-12-02 09:02:33,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 285 states have (on average 1.5263157894736843) internal successors, (435), 289 states have internal predecessors, (435), 62 states have call successors, (62), 23 states have call predecessors, (62), 24 states have return successors, (63), 61 states have call predecessors, (63), 61 states have call successors, (63) [2024-12-02 09:02:33,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 560 transitions. [2024-12-02 09:02:33,623 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 560 transitions. Word has length 145 [2024-12-02 09:02:33,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:33,624 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 560 transitions. [2024-12-02 09:02:33,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 09:02:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 560 transitions. [2024-12-02 09:02:33,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 09:02:33,627 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:33,627 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:33,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 09:02:33,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:33,828 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:33,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:33,828 INFO L85 PathProgramCache]: Analyzing trace with hash 608612423, now seen corresponding path program 1 times [2024-12-02 09:02:33,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:33,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450792315] [2024-12-02 09:02:33,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:33,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 09:02:34,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:34,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450792315] [2024-12-02 09:02:34,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450792315] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:02:34,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942948027] [2024-12-02 09:02:34,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:34,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:34,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:02:34,064 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:02:34,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 09:02:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:34,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 09:02:34,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:02:34,430 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 09:02:34,430 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:02:34,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942948027] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:34,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 09:02:34,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-12-02 09:02:34,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622926471] [2024-12-02 09:02:34,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:34,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 09:02:34,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:34,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 09:02:34,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 09:02:34,432 INFO L87 Difference]: Start difference. First operand 372 states and 560 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 09:02:34,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:34,502 INFO L93 Difference]: Finished difference Result 733 states and 1109 transitions. [2024-12-02 09:02:34,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 09:02:34,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 146 [2024-12-02 09:02:34,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:34,506 INFO L225 Difference]: With dead ends: 733 [2024-12-02 09:02:34,506 INFO L226 Difference]: Without dead ends: 374 [2024-12-02 09:02:34,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 09:02:34,508 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 2 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:34,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1867 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:02:34,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-12-02 09:02:34,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2024-12-02 09:02:34,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 286 states have (on average 1.5244755244755244) internal successors, (436), 291 states have internal predecessors, (436), 62 states have call successors, (62), 23 states have call predecessors, (62), 25 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2024-12-02 09:02:34,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 566 transitions. [2024-12-02 09:02:34,528 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 566 transitions. Word has length 146 [2024-12-02 09:02:34,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:34,528 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 566 transitions. [2024-12-02 09:02:34,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 09:02:34,529 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 566 transitions. [2024-12-02 09:02:34,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 09:02:34,532 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:34,532 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:34,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 09:02:34,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:34,732 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:34,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:34,733 INFO L85 PathProgramCache]: Analyzing trace with hash -837049532, now seen corresponding path program 1 times [2024-12-02 09:02:34,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:34,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618740246] [2024-12-02 09:02:34,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:34,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:34,926 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 09:02:34,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:34,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618740246] [2024-12-02 09:02:34,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618740246] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:34,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:02:34,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 09:02:34,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387701281] [2024-12-02 09:02:34,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:34,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 09:02:34,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:34,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 09:02:34,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:02:34,928 INFO L87 Difference]: Start difference. First operand 374 states and 566 transitions. Second operand has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 09:02:34,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:34,971 INFO L93 Difference]: Finished difference Result 725 states and 1100 transitions. [2024-12-02 09:02:34,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 09:02:34,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 147 [2024-12-02 09:02:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:34,974 INFO L225 Difference]: With dead ends: 725 [2024-12-02 09:02:34,974 INFO L226 Difference]: Without dead ends: 374 [2024-12-02 09:02:34,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:02:34,975 INFO L435 NwaCegarLoop]: 474 mSDtfsCounter, 2 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:34,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1885 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:02:34,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-12-02 09:02:34,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2024-12-02 09:02:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 286 states have (on average 1.5244755244755244) internal successors, (436), 291 states have internal predecessors, (436), 62 states have call successors, (62), 23 states have call predecessors, (62), 25 states have return successors, (67), 61 states have call predecessors, (67), 61 states have call successors, (67) [2024-12-02 09:02:34,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 565 transitions. [2024-12-02 09:02:34,990 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 565 transitions. Word has length 147 [2024-12-02 09:02:34,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:34,991 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 565 transitions. [2024-12-02 09:02:34,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.25) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 09:02:34,991 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 565 transitions. [2024-12-02 09:02:34,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 09:02:34,993 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:34,994 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:34,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 09:02:34,994 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:34,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:34,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1236192517, now seen corresponding path program 2 times [2024-12-02 09:02:34,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:34,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996486870] [2024-12-02 09:02:34,994 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 09:02:34,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:35,022 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 09:02:35,022 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 09:02:35,181 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 09:02:35,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:35,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996486870] [2024-12-02 09:02:35,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996486870] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:35,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:02:35,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 09:02:35,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795536541] [2024-12-02 09:02:35,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:35,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 09:02:35,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:35,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 09:02:35,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 09:02:35,183 INFO L87 Difference]: Start difference. First operand 374 states and 565 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 09:02:35,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:35,620 INFO L93 Difference]: Finished difference Result 853 states and 1297 transitions. [2024-12-02 09:02:35,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 09:02:35,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 148 [2024-12-02 09:02:35,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:35,625 INFO L225 Difference]: With dead ends: 853 [2024-12-02 09:02:35,625 INFO L226 Difference]: Without dead ends: 682 [2024-12-02 09:02:35,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-12-02 09:02:35,627 INFO L435 NwaCegarLoop]: 508 mSDtfsCounter, 898 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:35,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 2724 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 09:02:35,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-12-02 09:02:35,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 638. [2024-12-02 09:02:35,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 493 states have (on average 1.5598377281947262) internal successors, (769), 499 states have internal predecessors, (769), 104 states have call successors, (104), 39 states have call predecessors, (104), 40 states have return successors, (119), 102 states have call predecessors, (119), 103 states have call successors, (119) [2024-12-02 09:02:35,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 992 transitions. [2024-12-02 09:02:35,665 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 992 transitions. Word has length 148 [2024-12-02 09:02:35,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:35,665 INFO L471 AbstractCegarLoop]: Abstraction has 638 states and 992 transitions. [2024-12-02 09:02:35,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 09:02:35,666 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 992 transitions. [2024-12-02 09:02:35,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-12-02 09:02:35,670 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:35,670 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:35,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 09:02:35,670 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:35,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:35,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1984141352, now seen corresponding path program 1 times [2024-12-02 09:02:35,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:35,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104057114] [2024-12-02 09:02:35,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:35,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 09:02:35,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:35,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104057114] [2024-12-02 09:02:35,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104057114] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:35,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:02:35,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 09:02:35,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510151285] [2024-12-02 09:02:35,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:35,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 09:02:35,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:35,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 09:02:35,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:02:35,887 INFO L87 Difference]: Start difference. First operand 638 states and 992 transitions. Second operand has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 09:02:35,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:35,958 INFO L93 Difference]: Finished difference Result 1245 states and 1944 transitions. [2024-12-02 09:02:35,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 09:02:35,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 149 [2024-12-02 09:02:35,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:35,963 INFO L225 Difference]: With dead ends: 1245 [2024-12-02 09:02:35,963 INFO L226 Difference]: Without dead ends: 642 [2024-12-02 09:02:35,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:02:35,966 INFO L435 NwaCegarLoop]: 475 mSDtfsCounter, 1 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:35,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1888 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:02:35,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-12-02 09:02:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2024-12-02 09:02:35,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 495 states have (on average 1.5575757575757576) internal successors, (771), 503 states have internal predecessors, (771), 104 states have call successors, (104), 39 states have call predecessors, (104), 42 states have return successors, (122), 102 states have call predecessors, (122), 103 states have call successors, (122) [2024-12-02 09:02:36,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 997 transitions. [2024-12-02 09:02:36,002 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 997 transitions. Word has length 149 [2024-12-02 09:02:36,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:36,002 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 997 transitions. [2024-12-02 09:02:36,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 09:02:36,002 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 997 transitions. [2024-12-02 09:02:36,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 09:02:36,007 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:36,007 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:36,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 09:02:36,007 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:36,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:36,007 INFO L85 PathProgramCache]: Analyzing trace with hash 393874420, now seen corresponding path program 1 times [2024-12-02 09:02:36,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:36,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228149530] [2024-12-02 09:02:36,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:36,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 09:02:36,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:36,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228149530] [2024-12-02 09:02:36,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228149530] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:36,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:02:36,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 09:02:36,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421888262] [2024-12-02 09:02:36,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:36,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 09:02:36,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:36,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 09:02:36,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 09:02:36,200 INFO L87 Difference]: Start difference. First operand 642 states and 997 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 09:02:36,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:36,367 INFO L93 Difference]: Finished difference Result 1244 states and 1937 transitions. [2024-12-02 09:02:36,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 09:02:36,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 150 [2024-12-02 09:02:36,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:36,373 INFO L225 Difference]: With dead ends: 1244 [2024-12-02 09:02:36,373 INFO L226 Difference]: Without dead ends: 646 [2024-12-02 09:02:36,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 09:02:36,376 INFO L435 NwaCegarLoop]: 465 mSDtfsCounter, 7 mSDsluCounter, 2761 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:36,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3226 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 09:02:36,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2024-12-02 09:02:36,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 644. [2024-12-02 09:02:36,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 497 states have (on average 1.5553319919517103) internal successors, (773), 504 states have internal predecessors, (773), 104 states have call successors, (104), 40 states have call predecessors, (104), 42 states have return successors, (120), 102 states have call predecessors, (120), 103 states have call successors, (120) [2024-12-02 09:02:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 997 transitions. [2024-12-02 09:02:36,413 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 997 transitions. Word has length 150 [2024-12-02 09:02:36,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:36,413 INFO L471 AbstractCegarLoop]: Abstraction has 644 states and 997 transitions. [2024-12-02 09:02:36,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 09:02:36,414 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 997 transitions. [2024-12-02 09:02:36,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 09:02:36,418 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:36,418 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:36,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 09:02:36,418 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:36,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:36,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1101872897, now seen corresponding path program 2 times [2024-12-02 09:02:36,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:36,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255810054] [2024-12-02 09:02:36,419 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 09:02:36,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:36,452 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 09:02:36,452 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 09:02:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 09:02:36,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:36,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255810054] [2024-12-02 09:02:36,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255810054] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:36,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:02:36,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 09:02:36,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840900721] [2024-12-02 09:02:36,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:36,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 09:02:36,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:36,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 09:02:36,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 09:02:36,629 INFO L87 Difference]: Start difference. First operand 644 states and 997 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 3 states have call successors, (20), 1 states have call predecessors, (20), 3 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 09:02:36,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:36,775 INFO L93 Difference]: Finished difference Result 865 states and 1311 transitions. [2024-12-02 09:02:36,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 09:02:36,776 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 3 states have call successors, (20), 1 states have call predecessors, (20), 3 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) Word has length 151 [2024-12-02 09:02:36,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:36,781 INFO L225 Difference]: With dead ends: 865 [2024-12-02 09:02:36,781 INFO L226 Difference]: Without dead ends: 692 [2024-12-02 09:02:36,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 09:02:36,783 INFO L435 NwaCegarLoop]: 519 mSDtfsCounter, 40 mSDsluCounter, 3562 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 4081 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:36,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 4081 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 09:02:36,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-12-02 09:02:36,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 683. [2024-12-02 09:02:36,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 521 states have (on average 1.5470249520153552) internal successors, (806), 531 states have internal predecessors, (806), 118 states have call successors, (118), 40 states have call predecessors, (118), 43 states have return successors, (138), 115 states have call predecessors, (138), 117 states have call successors, (138) [2024-12-02 09:02:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1062 transitions. [2024-12-02 09:02:36,826 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1062 transitions. Word has length 151 [2024-12-02 09:02:36,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:36,827 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 1062 transitions. [2024-12-02 09:02:36,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 3 states have call successors, (20), 1 states have call predecessors, (20), 3 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 09:02:36,827 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1062 transitions. [2024-12-02 09:02:36,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 09:02:36,831 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:36,831 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:36,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 09:02:36,831 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:36,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:36,832 INFO L85 PathProgramCache]: Analyzing trace with hash 868450852, now seen corresponding path program 1 times [2024-12-02 09:02:36,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:36,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609696897] [2024-12-02 09:02:36,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:36,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-02 09:02:37,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:37,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609696897] [2024-12-02 09:02:37,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609696897] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:37,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:02:37,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 09:02:37,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862105488] [2024-12-02 09:02:37,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:37,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 09:02:37,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:37,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 09:02:37,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 09:02:37,007 INFO L87 Difference]: Start difference. First operand 683 states and 1062 transitions. Second operand has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 09:02:37,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:37,160 INFO L93 Difference]: Finished difference Result 1335 states and 2086 transitions. [2024-12-02 09:02:37,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 09:02:37,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 152 [2024-12-02 09:02:37,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:37,166 INFO L225 Difference]: With dead ends: 1335 [2024-12-02 09:02:37,166 INFO L226 Difference]: Without dead ends: 693 [2024-12-02 09:02:37,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 09:02:37,169 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 5 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3240 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:37,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3240 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 09:02:37,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-12-02 09:02:37,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2024-12-02 09:02:37,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 527 states have (on average 1.540796963946869) internal successors, (812), 538 states have internal predecessors, (812), 118 states have call successors, (118), 41 states have call predecessors, (118), 45 states have return successors, (145), 115 states have call predecessors, (145), 117 states have call successors, (145) [2024-12-02 09:02:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1075 transitions. [2024-12-02 09:02:37,225 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1075 transitions. Word has length 152 [2024-12-02 09:02:37,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:37,226 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1075 transitions. [2024-12-02 09:02:37,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.285714285714286) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2024-12-02 09:02:37,226 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1075 transitions. [2024-12-02 09:02:37,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 09:02:37,231 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:37,231 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:37,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 09:02:37,231 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:37,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:37,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1766406391, now seen corresponding path program 1 times [2024-12-02 09:02:37,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:37,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262857820] [2024-12-02 09:02:37,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:37,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 09:02:37,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:37,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262857820] [2024-12-02 09:02:37,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262857820] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:02:37,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096635376] [2024-12-02 09:02:37,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:37,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:37,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:02:37,364 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:02:37,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 09:02:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:37,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 09:02:37,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:02:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 09:02:37,720 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:02:37,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096635376] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:37,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 09:02:37,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-02 09:02:37,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27046764] [2024-12-02 09:02:37,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:37,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 09:02:37,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:37,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 09:02:37,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 09:02:37,722 INFO L87 Difference]: Start difference. First operand 691 states and 1075 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:37,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:37,783 INFO L93 Difference]: Finished difference Result 1180 states and 1817 transitions. [2024-12-02 09:02:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 09:02:37,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 154 [2024-12-02 09:02:37,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:37,788 INFO L225 Difference]: With dead ends: 1180 [2024-12-02 09:02:37,788 INFO L226 Difference]: Without dead ends: 697 [2024-12-02 09:02:37,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 09:02:37,789 INFO L435 NwaCegarLoop]: 474 mSDtfsCounter, 1 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:37,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1878 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:02:37,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-12-02 09:02:37,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2024-12-02 09:02:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 528 states have (on average 1.5397727272727273) internal successors, (813), 540 states have internal predecessors, (813), 118 states have call successors, (118), 41 states have call predecessors, (118), 46 states have return successors, (147), 115 states have call predecessors, (147), 117 states have call successors, (147) [2024-12-02 09:02:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1078 transitions. [2024-12-02 09:02:37,818 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1078 transitions. Word has length 154 [2024-12-02 09:02:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:37,818 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1078 transitions. [2024-12-02 09:02:37,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:37,818 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1078 transitions. [2024-12-02 09:02:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 09:02:37,821 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:37,821 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:37,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 09:02:38,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:38,022 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:38,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:38,022 INFO L85 PathProgramCache]: Analyzing trace with hash 53693046, now seen corresponding path program 1 times [2024-12-02 09:02:38,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:38,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507573572] [2024-12-02 09:02:38,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:38,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 09:02:38,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:38,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507573572] [2024-12-02 09:02:38,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507573572] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:02:38,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894529606] [2024-12-02 09:02:38,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:38,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:38,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:02:38,109 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:02:38,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 09:02:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:38,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 09:02:38,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:02:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 09:02:38,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:02:38,563 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 09:02:38,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894529606] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:02:38,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:02:38,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-12-02 09:02:38,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824058340] [2024-12-02 09:02:38,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:02:38,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 09:02:38,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:38,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 09:02:38,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 09:02:38,565 INFO L87 Difference]: Start difference. First operand 693 states and 1078 transitions. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-12-02 09:02:38,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:38,732 INFO L93 Difference]: Finished difference Result 1611 states and 2612 transitions. [2024-12-02 09:02:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 09:02:38,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 153 [2024-12-02 09:02:38,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:38,742 INFO L225 Difference]: With dead ends: 1611 [2024-12-02 09:02:38,742 INFO L226 Difference]: Without dead ends: 1317 [2024-12-02 09:02:38,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 09:02:38,745 INFO L435 NwaCegarLoop]: 517 mSDtfsCounter, 384 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:38,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 2186 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 09:02:38,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2024-12-02 09:02:38,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1287. [2024-12-02 09:02:38,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 994 states have (on average 1.6066398390342052) internal successors, (1597), 1006 states have internal predecessors, (1597), 246 states have call successors, (246), 41 states have call predecessors, (246), 46 states have return successors, (300), 243 states have call predecessors, (300), 245 states have call successors, (300) [2024-12-02 09:02:38,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 2143 transitions. [2024-12-02 09:02:38,824 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 2143 transitions. Word has length 153 [2024-12-02 09:02:38,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:38,824 INFO L471 AbstractCegarLoop]: Abstraction has 1287 states and 2143 transitions. [2024-12-02 09:02:38,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-12-02 09:02:38,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 2143 transitions. [2024-12-02 09:02:38,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-12-02 09:02:38,832 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:38,832 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:38,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 09:02:39,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:39,033 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:39,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:39,033 INFO L85 PathProgramCache]: Analyzing trace with hash 478729342, now seen corresponding path program 1 times [2024-12-02 09:02:39,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:39,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119090520] [2024-12-02 09:02:39,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:39,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 09:02:39,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:39,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119090520] [2024-12-02 09:02:39,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119090520] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:39,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:02:39,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 09:02:39,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461011476] [2024-12-02 09:02:39,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:39,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:02:39,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:39,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:02:39,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:02:39,106 INFO L87 Difference]: Start difference. First operand 1287 states and 2143 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:39,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:39,176 INFO L93 Difference]: Finished difference Result 3043 states and 5149 transitions. [2024-12-02 09:02:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:02:39,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 160 [2024-12-02 09:02:39,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:39,189 INFO L225 Difference]: With dead ends: 3043 [2024-12-02 09:02:39,190 INFO L226 Difference]: Without dead ends: 1883 [2024-12-02 09:02:39,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:02:39,195 INFO L435 NwaCegarLoop]: 492 mSDtfsCounter, 97 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:39,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 969 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:02:39,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2024-12-02 09:02:39,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1873. [2024-12-02 09:02:39,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1452 states have (on average 1.6205234159779613) internal successors, (2353), 1464 states have internal predecessors, (2353), 374 states have call successors, (374), 41 states have call predecessors, (374), 46 states have return successors, (453), 371 states have call predecessors, (453), 373 states have call successors, (453) [2024-12-02 09:02:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3180 transitions. [2024-12-02 09:02:39,303 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3180 transitions. Word has length 160 [2024-12-02 09:02:39,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:39,304 INFO L471 AbstractCegarLoop]: Abstraction has 1873 states and 3180 transitions. [2024-12-02 09:02:39,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:39,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3180 transitions. [2024-12-02 09:02:39,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-12-02 09:02:39,315 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:39,315 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:39,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 09:02:39,316 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:39,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:39,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1276360014, now seen corresponding path program 1 times [2024-12-02 09:02:39,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:39,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712507650] [2024-12-02 09:02:39,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:39,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:39,385 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 09:02:39,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:39,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712507650] [2024-12-02 09:02:39,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712507650] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:39,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:02:39,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 09:02:39,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428688709] [2024-12-02 09:02:39,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:39,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:02:39,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:39,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:02:39,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:02:39,387 INFO L87 Difference]: Start difference. First operand 1873 states and 3180 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:39,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:39,481 INFO L93 Difference]: Finished difference Result 4439 states and 7598 transitions. [2024-12-02 09:02:39,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:02:39,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 161 [2024-12-02 09:02:39,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:39,499 INFO L225 Difference]: With dead ends: 4439 [2024-12-02 09:02:39,499 INFO L226 Difference]: Without dead ends: 2795 [2024-12-02 09:02:39,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:02:39,534 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 95 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:39,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 956 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:02:39,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2024-12-02 09:02:39,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 2785. [2024-12-02 09:02:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2174 states have (on average 1.6297148114075437) internal successors, (3543), 2186 states have internal predecessors, (3543), 564 states have call successors, (564), 41 states have call predecessors, (564), 46 states have return successors, (659), 561 states have call predecessors, (659), 563 states have call successors, (659) [2024-12-02 09:02:39,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4766 transitions. [2024-12-02 09:02:39,693 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4766 transitions. Word has length 161 [2024-12-02 09:02:39,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:39,693 INFO L471 AbstractCegarLoop]: Abstraction has 2785 states and 4766 transitions. [2024-12-02 09:02:39,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:39,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4766 transitions. [2024-12-02 09:02:39,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-12-02 09:02:39,711 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:39,711 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:39,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 09:02:39,712 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:39,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:39,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1336241824, now seen corresponding path program 1 times [2024-12-02 09:02:39,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:39,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857296817] [2024-12-02 09:02:39,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:39,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:39,780 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 09:02:39,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:39,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857296817] [2024-12-02 09:02:39,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857296817] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:39,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:02:39,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 09:02:39,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716627065] [2024-12-02 09:02:39,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:39,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:02:39,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:39,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:02:39,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:02:39,782 INFO L87 Difference]: Start difference. First operand 2785 states and 4766 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:39,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:39,907 INFO L93 Difference]: Finished difference Result 6477 states and 11190 transitions. [2024-12-02 09:02:39,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:02:39,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 162 [2024-12-02 09:02:39,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:39,933 INFO L225 Difference]: With dead ends: 6477 [2024-12-02 09:02:39,934 INFO L226 Difference]: Without dead ends: 4163 [2024-12-02 09:02:39,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:02:39,946 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 93 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:39,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 951 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:02:39,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4163 states. [2024-12-02 09:02:40,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4163 to 4153. [2024-12-02 09:02:40,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4153 states, 3296 states have (on average 1.6374393203883495) internal successors, (5397), 3308 states have internal predecessors, (5397), 810 states have call successors, (810), 41 states have call predecessors, (810), 46 states have return successors, (955), 807 states have call predecessors, (955), 809 states have call successors, (955) [2024-12-02 09:02:40,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 7162 transitions. [2024-12-02 09:02:40,252 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 7162 transitions. Word has length 162 [2024-12-02 09:02:40,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:40,252 INFO L471 AbstractCegarLoop]: Abstraction has 4153 states and 7162 transitions. [2024-12-02 09:02:40,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:40,253 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 7162 transitions. [2024-12-02 09:02:40,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-12-02 09:02:40,285 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:40,286 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:40,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 09:02:40,286 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:40,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:40,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1976998737, now seen corresponding path program 1 times [2024-12-02 09:02:40,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:40,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584588443] [2024-12-02 09:02:40,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:40,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:40,375 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 09:02:40,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:40,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584588443] [2024-12-02 09:02:40,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584588443] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:40,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:02:40,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 09:02:40,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337594719] [2024-12-02 09:02:40,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:40,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:02:40,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:40,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:02:40,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:02:40,376 INFO L87 Difference]: Start difference. First operand 4153 states and 7162 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:40,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:40,550 INFO L93 Difference]: Finished difference Result 9623 states and 16744 transitions. [2024-12-02 09:02:40,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:02:40,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2024-12-02 09:02:40,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:40,588 INFO L225 Difference]: With dead ends: 9623 [2024-12-02 09:02:40,588 INFO L226 Difference]: Without dead ends: 6335 [2024-12-02 09:02:40,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:02:40,602 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 91 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:40,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 951 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:02:40,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6335 states. [2024-12-02 09:02:40,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6335 to 6325. [2024-12-02 09:02:40,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6325 states, 5110 states have (on average 1.6424657534246576) internal successors, (8393), 5122 states have internal predecessors, (8393), 1168 states have call successors, (1168), 41 states have call predecessors, (1168), 46 states have return successors, (1396), 1165 states have call predecessors, (1396), 1167 states have call successors, (1396) [2024-12-02 09:02:40,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6325 states to 6325 states and 10957 transitions. [2024-12-02 09:02:40,945 INFO L78 Accepts]: Start accepts. Automaton has 6325 states and 10957 transitions. Word has length 163 [2024-12-02 09:02:40,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:40,945 INFO L471 AbstractCegarLoop]: Abstraction has 6325 states and 10957 transitions. [2024-12-02 09:02:40,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:40,946 INFO L276 IsEmpty]: Start isEmpty. Operand 6325 states and 10957 transitions. [2024-12-02 09:02:40,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-02 09:02:40,975 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:40,975 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:40,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 09:02:40,975 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:40,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1547385963, now seen corresponding path program 1 times [2024-12-02 09:02:40,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:40,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763235965] [2024-12-02 09:02:40,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:40,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 09:02:41,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:41,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763235965] [2024-12-02 09:02:41,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763235965] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:02:41,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071542325] [2024-12-02 09:02:41,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:41,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:41,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:02:41,092 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:02:41,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 09:02:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:41,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 09:02:41,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:02:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 09:02:41,450 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:02:41,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071542325] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:41,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 09:02:41,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 09:02:41,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260673212] [2024-12-02 09:02:41,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:41,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:02:41,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:41,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:02:41,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 09:02:41,452 INFO L87 Difference]: Start difference. First operand 6325 states and 10957 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:41,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:41,690 INFO L93 Difference]: Finished difference Result 15305 states and 26679 transitions. [2024-12-02 09:02:41,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:02:41,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 166 [2024-12-02 09:02:41,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:41,746 INFO L225 Difference]: With dead ends: 15305 [2024-12-02 09:02:41,746 INFO L226 Difference]: Without dead ends: 10287 [2024-12-02 09:02:41,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 09:02:41,765 INFO L435 NwaCegarLoop]: 498 mSDtfsCounter, 89 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:41,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 977 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:02:41,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10287 states. [2024-12-02 09:02:42,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10287 to 10277. [2024-12-02 09:02:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10277 states, 8310 states have (on average 1.6350180505415162) internal successors, (13587), 8322 states have internal predecessors, (13587), 1920 states have call successors, (1920), 41 states have call predecessors, (1920), 46 states have return successors, (2292), 1917 states have call predecessors, (2292), 1919 states have call successors, (2292) [2024-12-02 09:02:42,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10277 states to 10277 states and 17799 transitions. [2024-12-02 09:02:42,300 INFO L78 Accepts]: Start accepts. Automaton has 10277 states and 17799 transitions. Word has length 166 [2024-12-02 09:02:42,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:42,301 INFO L471 AbstractCegarLoop]: Abstraction has 10277 states and 17799 transitions. [2024-12-02 09:02:42,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:42,302 INFO L276 IsEmpty]: Start isEmpty. Operand 10277 states and 17799 transitions. [2024-12-02 09:02:42,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-02 09:02:42,343 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:42,343 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:42,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 09:02:42,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 09:02:42,543 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:42,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:42,544 INFO L85 PathProgramCache]: Analyzing trace with hash 584344755, now seen corresponding path program 1 times [2024-12-02 09:02:42,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:42,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059924672] [2024-12-02 09:02:42,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:42,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:42,609 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 09:02:42,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:42,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059924672] [2024-12-02 09:02:42,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059924672] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:42,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:02:42,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 09:02:42,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639856811] [2024-12-02 09:02:42,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:42,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:02:42,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:42,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:02:42,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:02:42,611 INFO L87 Difference]: Start difference. First operand 10277 states and 17799 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:43,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:43,209 INFO L93 Difference]: Finished difference Result 25323 states and 44081 transitions. [2024-12-02 09:02:43,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:02:43,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 165 [2024-12-02 09:02:43,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:43,293 INFO L225 Difference]: With dead ends: 25323 [2024-12-02 09:02:43,293 INFO L226 Difference]: Without dead ends: 17075 [2024-12-02 09:02:43,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:02:43,322 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 87 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:43,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 956 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:02:43,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17075 states. [2024-12-02 09:02:43,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17075 to 17065. [2024-12-02 09:02:43,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17065 states, 13886 states have (on average 1.632363531614576) internal successors, (22667), 13898 states have internal predecessors, (22667), 3132 states have call successors, (3132), 41 states have call predecessors, (3132), 46 states have return successors, (3693), 3129 states have call predecessors, (3693), 3131 states have call successors, (3693) [2024-12-02 09:02:44,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17065 states to 17065 states and 29492 transitions. [2024-12-02 09:02:44,076 INFO L78 Accepts]: Start accepts. Automaton has 17065 states and 29492 transitions. Word has length 165 [2024-12-02 09:02:44,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:44,076 INFO L471 AbstractCegarLoop]: Abstraction has 17065 states and 29492 transitions. [2024-12-02 09:02:44,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:44,076 INFO L276 IsEmpty]: Start isEmpty. Operand 17065 states and 29492 transitions. [2024-12-02 09:02:44,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 09:02:44,118 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:44,118 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:44,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 09:02:44,118 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:44,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:44,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1519163369, now seen corresponding path program 1 times [2024-12-02 09:02:44,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:44,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747406592] [2024-12-02 09:02:44,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:44,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 09:02:44,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:44,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747406592] [2024-12-02 09:02:44,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747406592] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:02:44,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419706726] [2024-12-02 09:02:44,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:44,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:44,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:02:44,203 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:02:44,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 09:02:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:44,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 09:02:44,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:02:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 09:02:44,591 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:02:44,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419706726] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:44,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 09:02:44,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 09:02:44,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426023057] [2024-12-02 09:02:44,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:44,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:02:44,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:44,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:02:44,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 09:02:44,593 INFO L87 Difference]: Start difference. First operand 17065 states and 29492 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:45,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:45,068 INFO L93 Difference]: Finished difference Result 44165 states and 76631 transitions. [2024-12-02 09:02:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:02:45,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 168 [2024-12-02 09:02:45,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:45,160 INFO L225 Difference]: With dead ends: 44165 [2024-12-02 09:02:45,161 INFO L226 Difference]: Without dead ends: 29929 [2024-12-02 09:02:45,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 09:02:45,194 INFO L435 NwaCegarLoop]: 495 mSDtfsCounter, 85 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:45,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 975 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:02:45,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29929 states. [2024-12-02 09:02:46,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29929 to 29919. [2024-12-02 09:02:46,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29919 states, 24334 states have (on average 1.62188707158708) internal successors, (39467), 24346 states have internal predecessors, (39467), 5538 states have call successors, (5538), 41 states have call predecessors, (5538), 46 states have return successors, (6524), 5535 states have call predecessors, (6524), 5537 states have call successors, (6524) [2024-12-02 09:02:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29919 states to 29919 states and 51529 transitions. [2024-12-02 09:02:46,610 INFO L78 Accepts]: Start accepts. Automaton has 29919 states and 51529 transitions. Word has length 168 [2024-12-02 09:02:46,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:46,610 INFO L471 AbstractCegarLoop]: Abstraction has 29919 states and 51529 transitions. [2024-12-02 09:02:46,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:46,610 INFO L276 IsEmpty]: Start isEmpty. Operand 29919 states and 51529 transitions. [2024-12-02 09:02:46,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-12-02 09:02:46,686 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:46,686 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:46,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 09:02:46,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:46,887 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:46,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:46,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2020539099, now seen corresponding path program 1 times [2024-12-02 09:02:46,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:46,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032331928] [2024-12-02 09:02:46,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:46,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 09:02:46,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:46,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032331928] [2024-12-02 09:02:46,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032331928] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:02:46,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124639965] [2024-12-02 09:02:46,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:46,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:46,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:02:46,971 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:02:46,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 09:02:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:47,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 09:02:47,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:02:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 09:02:47,365 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:02:47,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124639965] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:47,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 09:02:47,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 09:02:47,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415083980] [2024-12-02 09:02:47,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:47,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:02:47,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:47,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:02:47,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 09:02:47,367 INFO L87 Difference]: Start difference. First operand 29919 states and 51529 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:48,200 INFO L93 Difference]: Finished difference Result 79197 states and 137040 transitions. [2024-12-02 09:02:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:02:48,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 169 [2024-12-02 09:02:48,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:48,412 INFO L225 Difference]: With dead ends: 79197 [2024-12-02 09:02:48,412 INFO L226 Difference]: Without dead ends: 53263 [2024-12-02 09:02:48,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 09:02:48,493 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 83 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:48,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 954 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:02:48,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53263 states. [2024-12-02 09:02:50,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53263 to 53253. [2024-12-02 09:02:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53253 states, 43590 states have (on average 1.616815783436568) internal successors, (70477), 43602 states have internal predecessors, (70477), 9616 states have call successors, (9616), 41 states have call predecessors, (9616), 46 states have return successors, (11416), 9613 states have call predecessors, (11416), 9615 states have call successors, (11416) [2024-12-02 09:02:50,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53253 states to 53253 states and 91509 transitions. [2024-12-02 09:02:50,447 INFO L78 Accepts]: Start accepts. Automaton has 53253 states and 91509 transitions. Word has length 169 [2024-12-02 09:02:50,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:50,447 INFO L471 AbstractCegarLoop]: Abstraction has 53253 states and 91509 transitions. [2024-12-02 09:02:50,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:50,448 INFO L276 IsEmpty]: Start isEmpty. Operand 53253 states and 91509 transitions. [2024-12-02 09:02:50,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 09:02:50,612 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:50,613 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:50,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 09:02:50,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:50,813 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:50,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:50,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1964960960, now seen corresponding path program 1 times [2024-12-02 09:02:50,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:50,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558632044] [2024-12-02 09:02:50,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:50,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 09:02:50,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:50,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558632044] [2024-12-02 09:02:50,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558632044] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:50,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:02:50,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 09:02:50,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963417004] [2024-12-02 09:02:50,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:50,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:02:50,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:50,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:02:50,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:02:50,884 INFO L87 Difference]: Start difference. First operand 53253 states and 91509 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:52,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:02:52,828 INFO L93 Difference]: Finished difference Result 145101 states and 249724 transitions. [2024-12-02 09:02:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:02:52,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 168 [2024-12-02 09:02:52,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:02:53,125 INFO L225 Difference]: With dead ends: 145101 [2024-12-02 09:02:53,125 INFO L226 Difference]: Without dead ends: 97223 [2024-12-02 09:02:53,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 09:02:53,229 INFO L435 NwaCegarLoop]: 490 mSDtfsCounter, 81 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:02:53,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 965 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:02:53,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97223 states. [2024-12-02 09:02:55,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97223 to 97213. [2024-12-02 09:02:55,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97213 states, 80120 states have (on average 1.610346979530704) internal successors, (129021), 80132 states have internal predecessors, (129021), 17046 states have call successors, (17046), 41 states have call predecessors, (17046), 46 states have return successors, (19910), 17043 states have call predecessors, (19910), 17045 states have call successors, (19910) [2024-12-02 09:02:56,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97213 states to 97213 states and 165977 transitions. [2024-12-02 09:02:56,365 INFO L78 Accepts]: Start accepts. Automaton has 97213 states and 165977 transitions. Word has length 168 [2024-12-02 09:02:56,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:02:56,366 INFO L471 AbstractCegarLoop]: Abstraction has 97213 states and 165977 transitions. [2024-12-02 09:02:56,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:02:56,366 INFO L276 IsEmpty]: Start isEmpty. Operand 97213 states and 165977 transitions. [2024-12-02 09:02:56,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 09:02:56,769 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:02:56,769 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:02:56,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 09:02:56,770 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:02:56,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:02:56,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1151454459, now seen corresponding path program 1 times [2024-12-02 09:02:56,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:02:56,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524664666] [2024-12-02 09:02:56,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:56,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:02:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 09:02:56,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:02:56,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524664666] [2024-12-02 09:02:56,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524664666] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:02:56,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431969470] [2024-12-02 09:02:56,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:02:56,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:02:56,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:02:56,849 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:02:56,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 09:02:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:02:57,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 09:02:57,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:02:57,219 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 09:02:57,219 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:02:57,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431969470] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:02:57,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 09:02:57,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 09:02:57,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86780667] [2024-12-02 09:02:57,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:02:57,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 09:02:57,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:02:57,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 09:02:57,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 09:02:57,221 INFO L87 Difference]: Start difference. First operand 97213 states and 165977 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:03:00,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:00,640 INFO L93 Difference]: Finished difference Result 181029 states and 309801 transitions. [2024-12-02 09:03:00,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 09:03:00,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 171 [2024-12-02 09:03:00,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:01,144 INFO L225 Difference]: With dead ends: 181029 [2024-12-02 09:03:01,144 INFO L226 Difference]: Without dead ends: 180735 [2024-12-02 09:03:01,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 09:03:01,202 INFO L435 NwaCegarLoop]: 489 mSDtfsCounter, 76 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:03:01,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 968 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:03:01,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180735 states. [2024-12-02 09:03:06,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180735 to 180725. [2024-12-02 09:03:06,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180725 states, 150034 states have (on average 1.6024167855286136) internal successors, (240417), 150046 states have internal predecessors, (240417), 30644 states have call successors, (30644), 41 states have call predecessors, (30644), 46 states have return successors, (36123), 30641 states have call predecessors, (36123), 30643 states have call successors, (36123) [2024-12-02 09:03:06,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180725 states to 180725 states and 307184 transitions. [2024-12-02 09:03:06,808 INFO L78 Accepts]: Start accepts. Automaton has 180725 states and 307184 transitions. Word has length 171 [2024-12-02 09:03:06,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:06,809 INFO L471 AbstractCegarLoop]: Abstraction has 180725 states and 307184 transitions. [2024-12-02 09:03:06,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 09:03:06,809 INFO L276 IsEmpty]: Start isEmpty. Operand 180725 states and 307184 transitions. [2024-12-02 09:03:07,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-12-02 09:03:07,434 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:07,434 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:03:07,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 09:03:07,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:03:07,635 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:07,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:07,635 INFO L85 PathProgramCache]: Analyzing trace with hash -514286792, now seen corresponding path program 1 times [2024-12-02 09:03:07,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:07,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987806729] [2024-12-02 09:03:07,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:07,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 09:03:07,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:07,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987806729] [2024-12-02 09:03:07,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987806729] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:03:07,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590920460] [2024-12-02 09:03:07,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:07,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:03:07,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:03:07,713 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:03:07,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 09:03:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:08,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 09:03:08,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:03:08,669 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 09:03:08,669 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:03:08,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590920460] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:08,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 09:03:08,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 16 [2024-12-02 09:03:08,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248476592] [2024-12-02 09:03:08,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:08,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 09:03:08,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:08,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 09:03:08,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-02 09:03:08,671 INFO L87 Difference]: Start difference. First operand 180725 states and 307184 transitions. Second operand has 13 states, 12 states have (on average 10.666666666666666) internal successors, (128), 10 states have internal predecessors, (128), 6 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-12-02 09:03:16,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:16,413 INFO L93 Difference]: Finished difference Result 360376 states and 623504 transitions. [2024-12-02 09:03:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 09:03:16,413 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 10.666666666666666) internal successors, (128), 10 states have internal predecessors, (128), 6 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 172 [2024-12-02 09:03:16,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:17,510 INFO L225 Difference]: With dead ends: 360376 [2024-12-02 09:03:17,510 INFO L226 Difference]: Without dead ends: 360133 [2024-12-02 09:03:17,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2024-12-02 09:03:17,611 INFO L435 NwaCegarLoop]: 602 mSDtfsCounter, 935 mSDsluCounter, 4604 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 5206 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 09:03:17,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 5206 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 09:03:17,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360133 states. [2024-12-02 09:03:28,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360133 to 359978. [2024-12-02 09:03:28,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359978 states, 298988 states have (on average 1.6032616693646569) internal successors, (479356), 298799 states have internal predecessors, (479356), 60877 states have call successors, (60877), 101 states have call predecessors, (60877), 112 states have return successors, (81600), 61088 states have call predecessors, (81600), 60874 states have call successors, (81600) [2024-12-02 09:03:29,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359978 states to 359978 states and 621833 transitions. [2024-12-02 09:03:29,924 INFO L78 Accepts]: Start accepts. Automaton has 359978 states and 621833 transitions. Word has length 172 [2024-12-02 09:03:29,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:29,925 INFO L471 AbstractCegarLoop]: Abstraction has 359978 states and 621833 transitions. [2024-12-02 09:03:29,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 10.666666666666666) internal successors, (128), 10 states have internal predecessors, (128), 6 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-12-02 09:03:29,925 INFO L276 IsEmpty]: Start isEmpty. Operand 359978 states and 621833 transitions. [2024-12-02 09:03:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 09:03:30,501 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:30,501 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:03:30,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 09:03:30,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 09:03:30,702 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:30,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:30,702 INFO L85 PathProgramCache]: Analyzing trace with hash -67454342, now seen corresponding path program 1 times [2024-12-02 09:03:30,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:30,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507385601] [2024-12-02 09:03:30,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:30,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 09:03:30,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:30,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507385601] [2024-12-02 09:03:30,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507385601] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:30,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 09:03:30,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 09:03:30,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310823148] [2024-12-02 09:03:30,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:30,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 09:03:30,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:30,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 09:03:30,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 09:03:30,778 INFO L87 Difference]: Start difference. First operand 359978 states and 621833 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 09:03:37,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:37,931 INFO L93 Difference]: Finished difference Result 360268 states and 622246 transitions. [2024-12-02 09:03:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 09:03:37,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 171 [2024-12-02 09:03:37,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:03:39,071 INFO L225 Difference]: With dead ends: 360268 [2024-12-02 09:03:39,071 INFO L226 Difference]: Without dead ends: 359706 [2024-12-02 09:03:39,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 09:03:39,166 INFO L435 NwaCegarLoop]: 475 mSDtfsCounter, 2 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 09:03:39,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1422 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 09:03:39,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359706 states. [2024-12-02 09:03:49,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359706 to 359706. [2024-12-02 09:03:50,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359706 states, 298784 states have (on average 1.6033489075720253) internal successors, (479055), 298587 states have internal predecessors, (479055), 60831 states have call successors, (60831), 81 states have call predecessors, (60831), 90 states have return successors, (81547), 61044 states have call predecessors, (81547), 60829 states have call successors, (81547) [2024-12-02 09:03:51,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359706 states to 359706 states and 621433 transitions. [2024-12-02 09:03:51,569 INFO L78 Accepts]: Start accepts. Automaton has 359706 states and 621433 transitions. Word has length 171 [2024-12-02 09:03:51,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:03:51,569 INFO L471 AbstractCegarLoop]: Abstraction has 359706 states and 621433 transitions. [2024-12-02 09:03:51,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-12-02 09:03:51,569 INFO L276 IsEmpty]: Start isEmpty. Operand 359706 states and 621433 transitions. [2024-12-02 09:03:52,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 09:03:52,376 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:03:52,376 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:03:52,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 09:03:52,376 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:03:52,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:03:52,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1095615074, now seen corresponding path program 1 times [2024-12-02 09:03:52,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:03:52,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429403503] [2024-12-02 09:03:52,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:52,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:03:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 09:03:52,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:03:52,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429403503] [2024-12-02 09:03:52,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429403503] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:03:52,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242657211] [2024-12-02 09:03:52,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:03:52,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:03:52,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:03:52,535 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:03:52,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 09:03:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:03:52,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 09:03:52,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:03:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 09:03:53,206 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:03:53,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242657211] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:03:53,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 09:03:53,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-12-02 09:03:53,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501702390] [2024-12-02 09:03:53,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:03:53,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 09:03:53,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:03:53,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 09:03:53,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 09:03:53,207 INFO L87 Difference]: Start difference. First operand 359706 states and 621433 transitions. Second operand has 10 states, 8 states have (on average 15.125) internal successors, (121), 9 states have internal predecessors, (121), 6 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 09:03:59,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:03:59,701 INFO L93 Difference]: Finished difference Result 360451 states and 622555 transitions. [2024-12-02 09:03:59,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 09:03:59,701 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 15.125) internal successors, (121), 9 states have internal predecessors, (121), 6 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) Word has length 173 [2024-12-02 09:03:59,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:04:00,909 INFO L225 Difference]: With dead ends: 360451 [2024-12-02 09:04:00,909 INFO L226 Difference]: Without dead ends: 359930 [2024-12-02 09:04:01,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-12-02 09:04:01,015 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 93 mSDsluCounter, 3730 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 4198 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 09:04:01,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 4198 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 09:04:01,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359930 states. [2024-12-02 09:04:12,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359930 to 359926. [2024-12-02 09:04:12,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359926 states, 298929 states have (on average 1.6032235079232862) internal successors, (479250), 298739 states have internal predecessors, (479250), 60904 states have call successors, (60904), 83 states have call predecessors, (60904), 92 states have return successors, (81645), 61116 states have call predecessors, (81645), 60902 states have call successors, (81645) [2024-12-02 09:04:13,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359926 states to 359926 states and 621799 transitions. [2024-12-02 09:04:13,939 INFO L78 Accepts]: Start accepts. Automaton has 359926 states and 621799 transitions. Word has length 173 [2024-12-02 09:04:13,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:04:13,940 INFO L471 AbstractCegarLoop]: Abstraction has 359926 states and 621799 transitions. [2024-12-02 09:04:13,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 15.125) internal successors, (121), 9 states have internal predecessors, (121), 6 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2024-12-02 09:04:13,940 INFO L276 IsEmpty]: Start isEmpty. Operand 359926 states and 621799 transitions. [2024-12-02 09:04:14,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 09:04:14,818 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:04:14,818 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:04:14,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-12-02 09:04:15,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 09:04:15,019 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:04:15,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:04:15,019 INFO L85 PathProgramCache]: Analyzing trace with hash 775147964, now seen corresponding path program 1 times [2024-12-02 09:04:15,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:04:15,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319998646] [2024-12-02 09:04:15,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:04:15,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:04:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:04:15,199 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-12-02 09:04:15,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:04:15,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319998646] [2024-12-02 09:04:15,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319998646] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:04:15,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236507414] [2024-12-02 09:04:15,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:04:15,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:04:15,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:04:15,201 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:04:15,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 09:04:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:04:15,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 09:04:15,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:04:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 09:04:15,685 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:04:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 09:04:15,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236507414] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:04:15,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:04:15,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2024-12-02 09:04:15,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385097405] [2024-12-02 09:04:15,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:04:15,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 09:04:15,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:04:15,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 09:04:15,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2024-12-02 09:04:15,974 INFO L87 Difference]: Start difference. First operand 359926 states and 621799 transitions. Second operand has 24 states, 22 states have (on average 11.863636363636363) internal successors, (261), 21 states have internal predecessors, (261), 8 states have call successors, (47), 7 states have call predecessors, (47), 10 states have return successors, (43), 8 states have call predecessors, (43), 7 states have call successors, (43) [2024-12-02 09:04:26,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:04:26,265 INFO L93 Difference]: Finished difference Result 361291 states and 632502 transitions. [2024-12-02 09:04:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 09:04:26,266 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 11.863636363636363) internal successors, (261), 21 states have internal predecessors, (261), 8 states have call successors, (47), 7 states have call predecessors, (47), 10 states have return successors, (43), 8 states have call predecessors, (43), 7 states have call successors, (43) Word has length 171 [2024-12-02 09:04:26,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:04:27,401 INFO L225 Difference]: With dead ends: 361291 [2024-12-02 09:04:27,401 INFO L226 Difference]: Without dead ends: 360586 [2024-12-02 09:04:27,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=388, Invalid=2804, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 09:04:27,514 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 1593 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 8165 mSolverCounterSat, 413 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 8578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 8165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 09:04:27,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 2943 Invalid, 8578 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [413 Valid, 8165 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 09:04:27,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360586 states. [2024-12-02 09:04:38,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360586 to 360534. [2024-12-02 09:04:38,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360534 states, 299362 states have (on average 1.6029121932643422) internal successors, (479851), 299182 states have internal predecessors, (479851), 61040 states have call successors, (61040), 115 states have call predecessors, (61040), 131 states have return successors, (85046), 61260 states have call predecessors, (85046), 61036 states have call successors, (85046) [2024-12-02 09:04:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360534 states to 360534 states and 625937 transitions. [2024-12-02 09:04:40,005 INFO L78 Accepts]: Start accepts. Automaton has 360534 states and 625937 transitions. Word has length 171 [2024-12-02 09:04:40,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:04:40,005 INFO L471 AbstractCegarLoop]: Abstraction has 360534 states and 625937 transitions. [2024-12-02 09:04:40,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 11.863636363636363) internal successors, (261), 21 states have internal predecessors, (261), 8 states have call successors, (47), 7 states have call predecessors, (47), 10 states have return successors, (43), 8 states have call predecessors, (43), 7 states have call successors, (43) [2024-12-02 09:04:40,005 INFO L276 IsEmpty]: Start isEmpty. Operand 360534 states and 625937 transitions. [2024-12-02 09:04:40,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-12-02 09:04:40,939 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:04:40,939 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 09:04:40,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 09:04:41,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 09:04:41,140 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:04:41,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:04:41,140 INFO L85 PathProgramCache]: Analyzing trace with hash -773230967, now seen corresponding path program 1 times [2024-12-02 09:04:41,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:04:41,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729245916] [2024-12-02 09:04:41,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:04:41,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:04:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:04:41,287 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 09:04:41,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:04:41,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729245916] [2024-12-02 09:04:41,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729245916] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:04:41,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312723075] [2024-12-02 09:04:41,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:04:41,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:04:41,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:04:41,290 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:04:41,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac0d52d0-3463-46ba-b692-b4e6348cdc1e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 09:04:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:04:41,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 09:04:41,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:04:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 09:04:41,704 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 09:04:41,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312723075] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 09:04:41,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 09:04:41,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2024-12-02 09:04:41,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037092311] [2024-12-02 09:04:41,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 09:04:41,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 09:04:41,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:04:41,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 09:04:41,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-12-02 09:04:41,705 INFO L87 Difference]: Start difference. First operand 360534 states and 625937 transitions. Second operand has 9 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18)