./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product12.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_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product12.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f43e7267ed715243a41104ad5703ed473575064952f167333067630dfd5e9da --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:56:22,288 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:56:22,401 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:56:22,412 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:56:22,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:56:22,455 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:56:22,456 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:56:22,456 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:56:22,457 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:56:22,457 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:56:22,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:56:22,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:56:22,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:56:22,458 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:56:22,459 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:56:22,459 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:56:22,460 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:56:22,461 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:56:22,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:56:22,461 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:56:22,461 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:56:22,461 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:56:22,461 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:56:22,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:56:22,461 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:56:22,462 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:56:22,462 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:56:22,462 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:56:22,462 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:56:22,462 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:56:22,462 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:56:22,462 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:56:22,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:56:22,463 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:56:22,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:56:22,463 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:56:22,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:56:22,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:56:22,463 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:56:22,463 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:56:22,463 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:56:22,463 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:56:22,463 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:56:22,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:56:22,463 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:56:22,464 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:56:22,464 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:56:22,464 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:56:22,464 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_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f43e7267ed715243a41104ad5703ed473575064952f167333067630dfd5e9da [2024-11-28 04:56:22,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:56:22,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:56:22,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:56:22,826 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:56:22,827 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:56:22,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/email_spec1_product12.cil.c [2024-11-28 04:56:26,233 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/data/ca5d314d5/2109c413de4346b78ef2ac6fe390ad6a/FLAGd24a8e715 [2024-11-28 04:56:26,677 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:56:26,678 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/sv-benchmarks/c/product-lines/email_spec1_product12.cil.c [2024-11-28 04:56:26,719 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/data/ca5d314d5/2109c413de4346b78ef2ac6fe390ad6a/FLAGd24a8e715 [2024-11-28 04:56:26,752 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/data/ca5d314d5/2109c413de4346b78ef2ac6fe390ad6a [2024-11-28 04:56:26,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:56:26,760 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:56:26,762 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:56:26,763 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:56:26,770 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:56:26,771 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:56:26" (1/1) ... [2024-11-28 04:56:26,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7853d252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:26, skipping insertion in model container [2024-11-28 04:56:26,775 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:56:26" (1/1) ... [2024-11-28 04:56:26,867 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:56:27,756 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_0ee90897-2a79-4123-9875-7f08f4459ee3/sv-benchmarks/c/product-lines/email_spec1_product12.cil.c[58861,58874] [2024-11-28 04:56:27,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:56:27,808 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:56:27,821 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2024-11-28 04:56:27,824 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [269] [2024-11-28 04:56:27,824 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [318] [2024-11-28 04:56:27,824 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [598] [2024-11-28 04:56:27,824 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [1671] [2024-11-28 04:56:27,825 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1906] [2024-11-28 04:56:27,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [2312] [2024-11-28 04:56:27,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2329] [2024-11-28 04:56:27,826 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2695] [2024-11-28 04:56:27,827 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [2704] [2024-11-28 04:56:27,827 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"AddressBookEncrypt_spec.i","") [2808] [2024-11-28 04:56:27,996 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_0ee90897-2a79-4123-9875-7f08f4459ee3/sv-benchmarks/c/product-lines/email_spec1_product12.cil.c[58861,58874] [2024-11-28 04:56:28,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:56:28,054 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:56:28,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:28 WrapperNode [2024-11-28 04:56:28,055 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:56:28,056 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:56:28,057 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:56:28,057 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:56:28,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:28" (1/1) ... [2024-11-28 04:56:28,113 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:28" (1/1) ... [2024-11-28 04:56:28,184 INFO L138 Inliner]: procedures = 122, calls = 174, calls flagged for inlining = 50, calls inlined = 40, statements flattened = 825 [2024-11-28 04:56:28,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:56:28,186 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:56:28,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:56:28,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:56:28,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:28" (1/1) ... [2024-11-28 04:56:28,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:28" (1/1) ... [2024-11-28 04:56:28,206 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:28" (1/1) ... [2024-11-28 04:56:28,232 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-11-28 04:56:28,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:28" (1/1) ... [2024-11-28 04:56:28,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:28" (1/1) ... [2024-11-28 04:56:28,250 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:28" (1/1) ... [2024-11-28 04:56:28,253 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:28" (1/1) ... [2024-11-28 04:56:28,262 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:28" (1/1) ... [2024-11-28 04:56:28,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:28" (1/1) ... [2024-11-28 04:56:28,270 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:28" (1/1) ... [2024-11-28 04:56:28,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:56:28,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:56:28,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:56:28,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:56:28,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:28" (1/1) ... [2024-11-28 04:56:28,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:56:28,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:28,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:56:28,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:56:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-28 04:56:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-28 04:56:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-28 04:56:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-28 04:56:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-28 04:56:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-28 04:56:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-28 04:56:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-28 04:56:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-28 04:56:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-28 04:56:28,388 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-28 04:56:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-28 04:56:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-28 04:56:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-28 04:56:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-28 04:56:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-28 04:56:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:56:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-28 04:56:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-28 04:56:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-28 04:56:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-28 04:56:28,389 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-28 04:56:28,390 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-28 04:56:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-28 04:56:28,390 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-28 04:56:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-28 04:56:28,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-28 04:56:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-28 04:56:28,390 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-28 04:56:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:56:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:56:28,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:56:28,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:56:28,391 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-28 04:56:28,392 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-28 04:56:28,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:56:28,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:56:28,752 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:56:28,756 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:56:30,043 INFO L? ?]: Removed 336 outVars from TransFormulas that were not future-live. [2024-11-28 04:56:30,044 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:56:30,079 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:56:30,079 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:56:30,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:56:30 BoogieIcfgContainer [2024-11-28 04:56:30,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:56:30,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:56:30,086 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:56:30,092 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:56:30,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:56:26" (1/3) ... [2024-11-28 04:56:30,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6997ac33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:56:30, skipping insertion in model container [2024-11-28 04:56:30,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:56:28" (2/3) ... [2024-11-28 04:56:30,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6997ac33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:56:30, skipping insertion in model container [2024-11-28 04:56:30,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:56:30" (3/3) ... [2024-11-28 04:56:30,098 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec1_product12.cil.c [2024-11-28 04:56:30,119 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:56:30,124 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec1_product12.cil.c that has 16 procedures, 260 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:56:30,281 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:56:30,298 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;@7073fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:56:30,300 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:56:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 260 states, 204 states have (on average 1.5588235294117647) internal successors, (318), 208 states have internal predecessors, (318), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-28 04:56:30,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:56:30,334 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:30,335 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:30,335 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:30,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:30,342 INFO L85 PathProgramCache]: Analyzing trace with hash -493923619, now seen corresponding path program 1 times [2024-11-28 04:56:30,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:30,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998258349] [2024-11-28 04:56:30,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:30,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:31,489 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:56:31,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:31,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998258349] [2024-11-28 04:56:31,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998258349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:31,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259215318] [2024-11-28 04:56:31,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:31,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:31,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:31,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:31,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:56:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:31,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:56:32,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 04:56:32,038 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:56:32,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259215318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:32,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:56:32,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-28 04:56:32,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234156110] [2024-11-28 04:56:32,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:32,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:56:32,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:32,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:56:32,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:56:32,088 INFO L87 Difference]: Start difference. First operand has 260 states, 204 states have (on average 1.5588235294117647) internal successors, (318), 208 states have internal predecessors, (318), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:32,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:32,144 INFO L93 Difference]: Finished difference Result 372 states and 555 transitions. [2024-11-28 04:56:32,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:56:32,146 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2024-11-28 04:56:32,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:32,165 INFO L225 Difference]: With dead ends: 372 [2024-11-28 04:56:32,166 INFO L226 Difference]: Without dead ends: 253 [2024-11-28 04:56:32,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:56:32,174 INFO L435 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:32,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:32,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-28 04:56:32,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-11-28 04:56:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 198 states have (on average 1.5505050505050506) internal successors, (307), 201 states have internal predecessors, (307), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-28 04:56:32,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 384 transitions. [2024-11-28 04:56:32,276 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 384 transitions. Word has length 86 [2024-11-28 04:56:32,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:32,278 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 384 transitions. [2024-11-28 04:56:32,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:32,279 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 384 transitions. [2024-11-28 04:56:32,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:56:32,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:32,285 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:32,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:56:32,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:56:32,486 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:32,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:32,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1100478807, now seen corresponding path program 1 times [2024-11-28 04:56:32,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:32,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831351102] [2024-11-28 04:56:32,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:32,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:56:32,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:32,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831351102] [2024-11-28 04:56:32,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831351102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:32,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088222213] [2024-11-28 04:56:32,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:32,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:32,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:32,939 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:32,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:56:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:33,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:56:33,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:33,463 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 04:56:33,467 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:56:33,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088222213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:33,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:56:33,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 04:56:33,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534722514] [2024-11-28 04:56:33,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:33,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:33,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:33,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:33,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:56:33,473 INFO L87 Difference]: Start difference. First operand 253 states and 384 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:33,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:33,554 INFO L93 Difference]: Finished difference Result 361 states and 535 transitions. [2024-11-28 04:56:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:56:33,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2024-11-28 04:56:33,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:33,563 INFO L225 Difference]: With dead ends: 361 [2024-11-28 04:56:33,563 INFO L226 Difference]: Without dead ends: 255 [2024-11-28 04:56:33,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:56:33,572 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 1 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:33,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 762 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:33,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-28 04:56:33,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2024-11-28 04:56:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 199 states have (on average 1.5477386934673367) internal successors, (308), 202 states have internal predecessors, (308), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-28 04:56:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 385 transitions. [2024-11-28 04:56:33,612 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 385 transitions. Word has length 86 [2024-11-28 04:56:33,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:33,613 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 385 transitions. [2024-11-28 04:56:33,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:33,614 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 385 transitions. [2024-11-28 04:56:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 04:56:33,618 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:33,619 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:33,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:56:33,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:33,820 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:33,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:33,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1838463149, now seen corresponding path program 1 times [2024-11-28 04:56:33,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:33,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379873801] [2024-11-28 04:56:33,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:33,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 04:56:34,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:34,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379873801] [2024-11-28 04:56:34,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379873801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:34,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072806566] [2024-11-28 04:56:34,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:34,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:34,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:34,232 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:34,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:56:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:34,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:56:34,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 04:56:34,691 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:56:34,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072806566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:34,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:56:34,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 04:56:34,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819450545] [2024-11-28 04:56:34,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:34,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:34,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:34,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:34,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:56:34,696 INFO L87 Difference]: Start difference. First operand 254 states and 385 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:34,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:34,754 INFO L93 Difference]: Finished difference Result 533 states and 821 transitions. [2024-11-28 04:56:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:56:34,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2024-11-28 04:56:34,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:34,759 INFO L225 Difference]: With dead ends: 533 [2024-11-28 04:56:34,760 INFO L226 Difference]: Without dead ends: 305 [2024-11-28 04:56:34,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:56:34,765 INFO L435 NwaCegarLoop]: 402 mSDtfsCounter, 99 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:34,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 741 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:34,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-28 04:56:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 297. [2024-11-28 04:56:34,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 231 states have (on average 1.5627705627705628) internal successors, (361), 234 states have internal predecessors, (361), 50 states have call successors, (50), 15 states have call predecessors, (50), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-28 04:56:34,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 460 transitions. [2024-11-28 04:56:34,817 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 460 transitions. Word has length 91 [2024-11-28 04:56:34,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:34,818 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 460 transitions. [2024-11-28 04:56:34,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:34,818 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 460 transitions. [2024-11-28 04:56:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-28 04:56:34,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:34,821 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:34,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:56:35,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:35,025 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:35,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:35,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1235105146, now seen corresponding path program 1 times [2024-11-28 04:56:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:35,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185992772] [2024-11-28 04:56:35,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:35,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:35,329 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 04:56:35,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:35,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185992772] [2024-11-28 04:56:35,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185992772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:35,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560616030] [2024-11-28 04:56:35,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:35,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:35,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:35,335 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:35,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:56:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:35,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:56:35,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:56:35,802 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:56:35,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560616030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:35,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:56:35,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-28 04:56:35,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330868171] [2024-11-28 04:56:35,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:35,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:56:35,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:35,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:56:35,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:56:35,804 INFO L87 Difference]: Start difference. First operand 297 states and 460 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:56:35,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:35,910 INFO L93 Difference]: Finished difference Result 585 states and 910 transitions. [2024-11-28 04:56:35,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:56:35,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2024-11-28 04:56:35,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:35,915 INFO L225 Difference]: With dead ends: 585 [2024-11-28 04:56:35,915 INFO L226 Difference]: Without dead ends: 299 [2024-11-28 04:56:35,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:56:35,918 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 2 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1493 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 [2024-11-28 04:56:35,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1493 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:35,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-28 04:56:35,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2024-11-28 04:56:35,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 232 states have (on average 1.5603448275862069) internal successors, (362), 236 states have internal predecessors, (362), 50 states have call successors, (50), 15 states have call predecessors, (50), 16 states have return successors, (51), 49 states have call predecessors, (51), 49 states have call successors, (51) [2024-11-28 04:56:35,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 463 transitions. [2024-11-28 04:56:35,943 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 463 transitions. Word has length 92 [2024-11-28 04:56:35,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:35,943 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 463 transitions. [2024-11-28 04:56:35,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:56:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 463 transitions. [2024-11-28 04:56:35,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:56:35,947 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:35,947 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:35,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:56:36,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:36,148 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:36,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:36,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1894041146, now seen corresponding path program 1 times [2024-11-28 04:56:36,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:36,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888214657] [2024-11-28 04:56:36,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:36,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:56:36,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:36,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888214657] [2024-11-28 04:56:36,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888214657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:36,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743797292] [2024-11-28 04:56:36,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:36,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:36,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:36,446 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:36,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:56:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:36,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:56:36,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:56:36,913 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:56:36,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743797292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:36,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:56:36,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-28 04:56:36,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267166670] [2024-11-28 04:56:36,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:36,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:56:36,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:36,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:56:36,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:56:36,917 INFO L87 Difference]: Start difference. First operand 299 states and 463 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:56:37,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:37,037 INFO L93 Difference]: Finished difference Result 587 states and 915 transitions. [2024-11-28 04:56:37,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:56:37,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2024-11-28 04:56:37,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:37,042 INFO L225 Difference]: With dead ends: 587 [2024-11-28 04:56:37,042 INFO L226 Difference]: Without dead ends: 301 [2024-11-28 04:56:37,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:56:37,045 INFO L435 NwaCegarLoop]: 374 mSDtfsCounter, 2 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:37,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1479 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:56:37,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-28 04:56:37,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2024-11-28 04:56:37,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 233 states have (on average 1.55793991416309) internal successors, (363), 238 states have internal predecessors, (363), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (56), 49 states have call predecessors, (56), 49 states have call successors, (56) [2024-11-28 04:56:37,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 469 transitions. [2024-11-28 04:56:37,070 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 469 transitions. Word has length 93 [2024-11-28 04:56:37,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:37,070 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 469 transitions. [2024-11-28 04:56:37,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:56:37,071 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 469 transitions. [2024-11-28 04:56:37,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 04:56:37,074 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:37,074 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:37,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:56:37,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:37,275 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:37,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:37,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1688427531, now seen corresponding path program 1 times [2024-11-28 04:56:37,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:37,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171026003] [2024-11-28 04:56:37,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:37,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 04:56:37,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:37,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171026003] [2024-11-28 04:56:37,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171026003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:37,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:37,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:56:37,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932638806] [2024-11-28 04:56:37,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:37,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:56:37,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:37,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:56:37,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:56:37,543 INFO L87 Difference]: Start difference. First operand 301 states and 469 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:56:37,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:37,624 INFO L93 Difference]: Finished difference Result 579 states and 906 transitions. [2024-11-28 04:56:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:56:37,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2024-11-28 04:56:37,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:37,629 INFO L225 Difference]: With dead ends: 579 [2024-11-28 04:56:37,630 INFO L226 Difference]: Without dead ends: 301 [2024-11-28 04:56:37,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:56:37,633 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 2 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1497 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 [2024-11-28 04:56:37,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1497 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:37,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-28 04:56:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2024-11-28 04:56:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 233 states have (on average 1.55793991416309) internal successors, (363), 238 states have internal predecessors, (363), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2024-11-28 04:56:37,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 468 transitions. [2024-11-28 04:56:37,663 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 468 transitions. Word has length 94 [2024-11-28 04:56:37,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:37,664 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 468 transitions. [2024-11-28 04:56:37,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:56:37,668 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 468 transitions. [2024-11-28 04:56:37,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 04:56:37,671 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:37,671 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:37,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:56:37,673 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:37,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:37,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1878039841, now seen corresponding path program 2 times [2024-11-28 04:56:37,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:37,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72439173] [2024-11-28 04:56:37,674 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:56:37,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:37,737 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:56:37,737 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:56:37,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:37,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72439173] [2024-11-28 04:56:37,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72439173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:37,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:37,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:56:37,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457718357] [2024-11-28 04:56:37,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:37,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:56:37,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:37,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:56:37,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:56:37,932 INFO L87 Difference]: Start difference. First operand 301 states and 468 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:56:38,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:38,022 INFO L93 Difference]: Finished difference Result 577 states and 901 transitions. [2024-11-28 04:56:38,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:56:38,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2024-11-28 04:56:38,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:38,027 INFO L225 Difference]: With dead ends: 577 [2024-11-28 04:56:38,028 INFO L226 Difference]: Without dead ends: 301 [2024-11-28 04:56:38,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:56:38,030 INFO L435 NwaCegarLoop]: 375 mSDtfsCounter, 2 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:38,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1483 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:56:38,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-28 04:56:38,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2024-11-28 04:56:38,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 233 states have (on average 1.55793991416309) internal successors, (363), 238 states have internal predecessors, (363), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (54), 49 states have call predecessors, (54), 49 states have call successors, (54) [2024-11-28 04:56:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 467 transitions. [2024-11-28 04:56:38,062 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 467 transitions. Word has length 95 [2024-11-28 04:56:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:38,063 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 467 transitions. [2024-11-28 04:56:38,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:56:38,064 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 467 transitions. [2024-11-28 04:56:38,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 04:56:38,066 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:38,066 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:38,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:56:38,067 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:38,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1928184556, now seen corresponding path program 3 times [2024-11-28 04:56:38,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:38,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120144773] [2024-11-28 04:56:38,068 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:56:38,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:38,111 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:56:38,112 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:56:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:56:38,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:38,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120144773] [2024-11-28 04:56:38,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120144773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:38,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:38,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:56:38,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672359087] [2024-11-28 04:56:38,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:38,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:56:38,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:38,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:56:38,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:56:38,259 INFO L87 Difference]: Start difference. First operand 301 states and 467 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:56:38,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:38,356 INFO L93 Difference]: Finished difference Result 579 states and 907 transitions. [2024-11-28 04:56:38,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:56:38,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2024-11-28 04:56:38,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:38,361 INFO L225 Difference]: With dead ends: 579 [2024-11-28 04:56:38,361 INFO L226 Difference]: Without dead ends: 303 [2024-11-28 04:56:38,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:56:38,364 INFO L435 NwaCegarLoop]: 378 mSDtfsCounter, 1 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:38,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1494 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:56:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-28 04:56:38,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2024-11-28 04:56:38,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 234 states have (on average 1.5555555555555556) internal successors, (364), 240 states have internal predecessors, (364), 50 states have call successors, (50), 15 states have call predecessors, (50), 18 states have return successors, (59), 49 states have call predecessors, (59), 49 states have call successors, (59) [2024-11-28 04:56:38,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 473 transitions. [2024-11-28 04:56:38,406 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 473 transitions. Word has length 96 [2024-11-28 04:56:38,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:38,407 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 473 transitions. [2024-11-28 04:56:38,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:56:38,407 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 473 transitions. [2024-11-28 04:56:38,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 04:56:38,410 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:38,410 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:38,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:56:38,410 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:38,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1766976356, now seen corresponding path program 1 times [2024-11-28 04:56:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471689176] [2024-11-28 04:56:38,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:38,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:56:38,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:38,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471689176] [2024-11-28 04:56:38,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471689176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:38,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:38,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:56:38,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950418749] [2024-11-28 04:56:38,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:38,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:56:38,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:38,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:56:38,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:56:38,642 INFO L87 Difference]: Start difference. First operand 303 states and 473 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:56:38,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:38,722 INFO L93 Difference]: Finished difference Result 585 states and 917 transitions. [2024-11-28 04:56:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:56:38,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2024-11-28 04:56:38,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:38,727 INFO L225 Difference]: With dead ends: 585 [2024-11-28 04:56:38,727 INFO L226 Difference]: Without dead ends: 305 [2024-11-28 04:56:38,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:56:38,730 INFO L435 NwaCegarLoop]: 378 mSDtfsCounter, 1 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1500 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 [2024-11-28 04:56:38,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1500 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:38,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-28 04:56:38,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2024-11-28 04:56:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 235 states have (on average 1.553191489361702) internal successors, (365), 242 states have internal predecessors, (365), 50 states have call successors, (50), 15 states have call predecessors, (50), 19 states have return successors, (61), 49 states have call predecessors, (61), 49 states have call successors, (61) [2024-11-28 04:56:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 476 transitions. [2024-11-28 04:56:38,764 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 476 transitions. Word has length 97 [2024-11-28 04:56:38,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:38,765 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 476 transitions. [2024-11-28 04:56:38,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:56:38,765 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 476 transitions. [2024-11-28 04:56:38,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 04:56:38,769 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:38,770 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:38,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:56:38,770 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:38,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:38,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1357946399, now seen corresponding path program 1 times [2024-11-28 04:56:38,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:38,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176875794] [2024-11-28 04:56:38,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:38,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:56:38,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:38,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176875794] [2024-11-28 04:56:38,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176875794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:56:38,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727191969] [2024-11-28 04:56:38,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:38,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:56:38,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:56:38,962 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:56:38,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:56:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:39,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:56:39,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:56:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:56:39,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:56:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:56:39,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727191969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:56:39,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:56:39,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 04:56:39,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141421329] [2024-11-28 04:56:39,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:56:39,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:56:39,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:39,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:56:39,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:56:39,560 INFO L87 Difference]: Start difference. First operand 305 states and 476 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:56:39,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:39,806 INFO L93 Difference]: Finished difference Result 732 states and 1187 transitions. [2024-11-28 04:56:39,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:56:39,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 98 [2024-11-28 04:56:39,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:39,813 INFO L225 Difference]: With dead ends: 732 [2024-11-28 04:56:39,813 INFO L226 Difference]: Without dead ends: 626 [2024-11-28 04:56:39,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:56:39,815 INFO L435 NwaCegarLoop]: 417 mSDtfsCounter, 384 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:39,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1528 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:56:39,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2024-11-28 04:56:39,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 602. [2024-11-28 04:56:39,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 468 states have (on average 1.6175213675213675) internal successors, (757), 475 states have internal predecessors, (757), 114 states have call successors, (114), 15 states have call predecessors, (114), 19 states have return successors, (135), 113 states have call predecessors, (135), 113 states have call successors, (135) [2024-11-28 04:56:39,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1006 transitions. [2024-11-28 04:56:39,863 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1006 transitions. Word has length 98 [2024-11-28 04:56:39,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:39,864 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 1006 transitions. [2024-11-28 04:56:39,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:56:39,865 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1006 transitions. [2024-11-28 04:56:39,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 04:56:39,870 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:39,871 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:39,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:56:40,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ee90897-2a79-4123-9875-7f08f4459ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:56:40,071 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:40,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:40,072 INFO L85 PathProgramCache]: Analyzing trace with hash 167848355, now seen corresponding path program 1 times [2024-11-28 04:56:40,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:40,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040125684] [2024-11-28 04:56:40,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:40,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:56:40,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:40,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040125684] [2024-11-28 04:56:40,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040125684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:40,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:40,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:56:40,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083556985] [2024-11-28 04:56:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:40,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:40,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:40,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:40,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:40,204 INFO L87 Difference]: Start difference. First operand 602 states and 1006 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:40,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:40,263 INFO L93 Difference]: Finished difference Result 1439 states and 2439 transitions. [2024-11-28 04:56:40,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:56:40,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 105 [2024-11-28 04:56:40,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:40,271 INFO L225 Difference]: With dead ends: 1439 [2024-11-28 04:56:40,271 INFO L226 Difference]: Without dead ends: 903 [2024-11-28 04:56:40,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:40,275 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 97 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:40,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 775 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:40,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2024-11-28 04:56:40,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 895. [2024-11-28 04:56:40,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 697 states have (on average 1.6284074605451937) internal successors, (1135), 704 states have internal predecessors, (1135), 178 states have call successors, (178), 15 states have call predecessors, (178), 19 states have return successors, (209), 177 states have call predecessors, (209), 177 states have call successors, (209) [2024-11-28 04:56:40,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1522 transitions. [2024-11-28 04:56:40,341 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1522 transitions. Word has length 105 [2024-11-28 04:56:40,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:40,341 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1522 transitions. [2024-11-28 04:56:40,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:40,342 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1522 transitions. [2024-11-28 04:56:40,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 04:56:40,349 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:40,349 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:40,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:56:40,350 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:40,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:40,350 INFO L85 PathProgramCache]: Analyzing trace with hash -881766647, now seen corresponding path program 1 times [2024-11-28 04:56:40,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:40,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289074413] [2024-11-28 04:56:40,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:40,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:56:40,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:40,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289074413] [2024-11-28 04:56:40,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289074413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:40,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:40,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:56:40,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383532331] [2024-11-28 04:56:40,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:40,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:40,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:40,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:40,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:40,463 INFO L87 Difference]: Start difference. First operand 895 states and 1522 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:40,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:40,555 INFO L93 Difference]: Finished difference Result 2137 states and 3651 transitions. [2024-11-28 04:56:40,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:56:40,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 106 [2024-11-28 04:56:40,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:40,568 INFO L225 Difference]: With dead ends: 2137 [2024-11-28 04:56:40,568 INFO L226 Difference]: Without dead ends: 1359 [2024-11-28 04:56:40,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:40,573 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 95 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:40,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 760 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:40,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2024-11-28 04:56:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1351. [2024-11-28 04:56:40,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 1058 states have (on average 1.6351606805293006) internal successors, (1730), 1065 states have internal predecessors, (1730), 273 states have call successors, (273), 15 states have call predecessors, (273), 19 states have return successors, (304), 272 states have call predecessors, (304), 272 states have call successors, (304) [2024-11-28 04:56:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 2307 transitions. [2024-11-28 04:56:40,715 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 2307 transitions. Word has length 106 [2024-11-28 04:56:40,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:40,715 INFO L471 AbstractCegarLoop]: Abstraction has 1351 states and 2307 transitions. [2024-11-28 04:56:40,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:40,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 2307 transitions. [2024-11-28 04:56:40,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 04:56:40,728 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:40,728 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:40,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:56:40,728 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:40,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:40,730 INFO L85 PathProgramCache]: Analyzing trace with hash 405160385, now seen corresponding path program 1 times [2024-11-28 04:56:40,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:40,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547736170] [2024-11-28 04:56:40,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:40,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:56:40,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:40,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547736170] [2024-11-28 04:56:40,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547736170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:40,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:40,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:56:40,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188812553] [2024-11-28 04:56:40,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:40,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:40,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:40,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:40,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:40,847 INFO L87 Difference]: Start difference. First operand 1351 states and 2307 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:40,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:40,993 INFO L93 Difference]: Finished difference Result 3156 states and 5430 transitions. [2024-11-28 04:56:40,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:56:40,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 107 [2024-11-28 04:56:40,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:41,014 INFO L225 Difference]: With dead ends: 3156 [2024-11-28 04:56:41,015 INFO L226 Difference]: Without dead ends: 2043 [2024-11-28 04:56:41,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:41,022 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 93 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:41,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 757 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:41,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2024-11-28 04:56:41,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 2035. [2024-11-28 04:56:41,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 1619 states have (on average 1.641136504014824) internal successors, (2657), 1626 states have internal predecessors, (2657), 396 states have call successors, (396), 15 states have call predecessors, (396), 19 states have return successors, (443), 395 states have call predecessors, (443), 395 states have call successors, (443) [2024-11-28 04:56:41,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3496 transitions. [2024-11-28 04:56:41,225 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 3496 transitions. Word has length 107 [2024-11-28 04:56:41,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:41,225 INFO L471 AbstractCegarLoop]: Abstraction has 2035 states and 3496 transitions. [2024-11-28 04:56:41,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:41,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 3496 transitions. [2024-11-28 04:56:41,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-28 04:56:41,236 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:41,236 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:41,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:56:41,236 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:41,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:41,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1580148232, now seen corresponding path program 1 times [2024-11-28 04:56:41,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:41,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876428125] [2024-11-28 04:56:41,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:41,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:56:41,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:41,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876428125] [2024-11-28 04:56:41,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876428125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:41,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:41,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:56:41,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200533843] [2024-11-28 04:56:41,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:41,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:41,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:41,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:41,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:41,331 INFO L87 Difference]: Start difference. First operand 2035 states and 3496 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:41,586 INFO L93 Difference]: Finished difference Result 4729 states and 8181 transitions. [2024-11-28 04:56:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:56:41,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 108 [2024-11-28 04:56:41,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:41,613 INFO L225 Difference]: With dead ends: 4729 [2024-11-28 04:56:41,613 INFO L226 Difference]: Without dead ends: 3129 [2024-11-28 04:56:41,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:41,623 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 91 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:41,623 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 757 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:41,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2024-11-28 04:56:41,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3121. [2024-11-28 04:56:41,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 2526 states have (on average 1.644893111638955) internal successors, (4155), 2533 states have internal predecessors, (4155), 575 states have call successors, (575), 15 states have call predecessors, (575), 19 states have return successors, (648), 574 states have call predecessors, (648), 574 states have call successors, (648) [2024-11-28 04:56:41,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 5378 transitions. [2024-11-28 04:56:41,948 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 5378 transitions. Word has length 108 [2024-11-28 04:56:41,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:41,948 INFO L471 AbstractCegarLoop]: Abstraction has 3121 states and 5378 transitions. [2024-11-28 04:56:41,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:41,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 5378 transitions. [2024-11-28 04:56:41,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-28 04:56:41,965 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:41,966 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:41,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:56:41,966 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:41,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:41,967 INFO L85 PathProgramCache]: Analyzing trace with hash 669329413, now seen corresponding path program 1 times [2024-11-28 04:56:41,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:41,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323762921] [2024-11-28 04:56:41,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:41,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:56:42,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:42,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323762921] [2024-11-28 04:56:42,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323762921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:42,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:42,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:56:42,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629757495] [2024-11-28 04:56:42,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:42,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:42,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:42,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:42,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:42,101 INFO L87 Difference]: Start difference. First operand 3121 states and 5378 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:42,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:42,474 INFO L93 Difference]: Finished difference Result 7570 states and 13103 transitions. [2024-11-28 04:56:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:56:42,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 109 [2024-11-28 04:56:42,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:42,519 INFO L225 Difference]: With dead ends: 7570 [2024-11-28 04:56:42,519 INFO L226 Difference]: Without dead ends: 5105 [2024-11-28 04:56:42,534 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 [2024-11-28 04:56:42,534 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 89 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:42,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 769 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:42,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5105 states. [2024-11-28 04:56:43,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5105 to 5097. [2024-11-28 04:56:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5097 states, 4126 states have (on average 1.6364517692680562) internal successors, (6752), 4133 states have internal predecessors, (6752), 951 states have call successors, (951), 15 states have call predecessors, (951), 19 states have return successors, (1068), 950 states have call predecessors, (1068), 950 states have call successors, (1068) [2024-11-28 04:56:43,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5097 states to 5097 states and 8771 transitions. [2024-11-28 04:56:43,090 INFO L78 Accepts]: Start accepts. Automaton has 5097 states and 8771 transitions. Word has length 109 [2024-11-28 04:56:43,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:43,090 INFO L471 AbstractCegarLoop]: Abstraction has 5097 states and 8771 transitions. [2024-11-28 04:56:43,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:43,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5097 states and 8771 transitions. [2024-11-28 04:56:43,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 04:56:43,116 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:43,116 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:43,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:56:43,116 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:43,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:43,117 INFO L85 PathProgramCache]: Analyzing trace with hash 463064004, now seen corresponding path program 1 times [2024-11-28 04:56:43,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:43,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518384851] [2024-11-28 04:56:43,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:43,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:43,238 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:56:43,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:43,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518384851] [2024-11-28 04:56:43,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518384851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:43,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:43,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:56:43,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508672077] [2024-11-28 04:56:43,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:43,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:43,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:43,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:43,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:43,241 INFO L87 Difference]: Start difference. First operand 5097 states and 8771 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:43,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:43,692 INFO L93 Difference]: Finished difference Result 12579 states and 21768 transitions. [2024-11-28 04:56:43,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:56:43,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2024-11-28 04:56:43,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:43,780 INFO L225 Difference]: With dead ends: 12579 [2024-11-28 04:56:43,780 INFO L226 Difference]: Without dead ends: 8499 [2024-11-28 04:56:43,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:43,803 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 87 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:43,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 762 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:43,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8499 states. [2024-11-28 04:56:44,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8499 to 8491. [2024-11-28 04:56:44,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8491 states, 6914 states have (on average 1.6332079838009834) internal successors, (11292), 6921 states have internal predecessors, (11292), 1557 states have call successors, (1557), 15 states have call predecessors, (1557), 19 states have return successors, (1752), 1556 states have call predecessors, (1752), 1556 states have call successors, (1752) [2024-11-28 04:56:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8491 states to 8491 states and 14601 transitions. [2024-11-28 04:56:44,656 INFO L78 Accepts]: Start accepts. Automaton has 8491 states and 14601 transitions. Word has length 110 [2024-11-28 04:56:44,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:44,656 INFO L471 AbstractCegarLoop]: Abstraction has 8491 states and 14601 transitions. [2024-11-28 04:56:44,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:44,657 INFO L276 IsEmpty]: Start isEmpty. Operand 8491 states and 14601 transitions. [2024-11-28 04:56:44,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-28 04:56:44,693 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:44,693 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:44,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:56:44,693 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:44,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:44,694 INFO L85 PathProgramCache]: Analyzing trace with hash -824022461, now seen corresponding path program 1 times [2024-11-28 04:56:44,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:44,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085404534] [2024-11-28 04:56:44,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:44,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:44,810 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:56:44,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:44,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085404534] [2024-11-28 04:56:44,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085404534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:44,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:44,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:56:44,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574813226] [2024-11-28 04:56:44,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:44,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:44,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:44,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:44,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:44,815 INFO L87 Difference]: Start difference. First operand 8491 states and 14601 transitions. 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:45,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:45,548 INFO L93 Difference]: Finished difference Result 22000 states and 37955 transitions. [2024-11-28 04:56:45,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:56:45,550 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 111 [2024-11-28 04:56:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:45,662 INFO L225 Difference]: With dead ends: 22000 [2024-11-28 04:56:45,663 INFO L226 Difference]: Without dead ends: 14926 [2024-11-28 04:56:45,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:45,702 INFO L435 NwaCegarLoop]: 397 mSDtfsCounter, 85 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:45,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 777 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:45,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14926 states. [2024-11-28 04:56:46,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14926 to 14918. [2024-11-28 04:56:46,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14918 states, 12138 states have (on average 1.6223430548690063) internal successors, (19692), 12145 states have internal predecessors, (19692), 2760 states have call successors, (2760), 15 states have call predecessors, (2760), 19 states have return successors, (3099), 2759 states have call predecessors, (3099), 2759 states have call successors, (3099) [2024-11-28 04:56:46,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14918 states to 14918 states and 25551 transitions. [2024-11-28 04:56:46,881 INFO L78 Accepts]: Start accepts. Automaton has 14918 states and 25551 transitions. Word has length 111 [2024-11-28 04:56:46,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:46,881 INFO L471 AbstractCegarLoop]: Abstraction has 14918 states and 25551 transitions. [2024-11-28 04:56:46,882 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, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:46,882 INFO L276 IsEmpty]: Start isEmpty. Operand 14918 states and 25551 transitions. [2024-11-28 04:56:46,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-28 04:56:46,915 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:46,915 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:46,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:56:46,915 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:46,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:46,916 INFO L85 PathProgramCache]: Analyzing trace with hash 173208355, now seen corresponding path program 1 times [2024-11-28 04:56:46,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:46,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617758386] [2024-11-28 04:56:46,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:46,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:56:47,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:47,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617758386] [2024-11-28 04:56:47,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617758386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:47,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:47,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:56:47,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339429910] [2024-11-28 04:56:47,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:47,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:47,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:47,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:47,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:47,023 INFO L87 Difference]: Start difference. First operand 14918 states and 25551 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:48,501 INFO L93 Difference]: Finished difference Result 39516 states and 67958 transitions. [2024-11-28 04:56:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:56:48,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 112 [2024-11-28 04:56:48,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:48,711 INFO L225 Difference]: With dead ends: 39516 [2024-11-28 04:56:48,711 INFO L226 Difference]: Without dead ends: 26593 [2024-11-28 04:56:48,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:48,793 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 83 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:48,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 760 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:48,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26593 states. [2024-11-28 04:56:50,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26593 to 26585. [2024-11-28 04:56:50,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26585 states, 21766 states have (on average 1.61706330974915) internal successors, (35197), 21773 states have internal predecessors, (35197), 4799 states have call successors, (4799), 15 states have call predecessors, (4799), 19 states have return successors, (5412), 4798 states have call predecessors, (5412), 4798 states have call successors, (5412) [2024-11-28 04:56:50,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26585 states to 26585 states and 45408 transitions. [2024-11-28 04:56:50,747 INFO L78 Accepts]: Start accepts. Automaton has 26585 states and 45408 transitions. Word has length 112 [2024-11-28 04:56:50,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:50,748 INFO L471 AbstractCegarLoop]: Abstraction has 26585 states and 45408 transitions. [2024-11-28 04:56:50,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:50,748 INFO L276 IsEmpty]: Start isEmpty. Operand 26585 states and 45408 transitions. [2024-11-28 04:56:50,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 04:56:50,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:50,787 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:50,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 04:56:50,788 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:50,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:50,790 INFO L85 PathProgramCache]: Analyzing trace with hash 723996705, now seen corresponding path program 1 times [2024-11-28 04:56:50,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:50,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966218731] [2024-11-28 04:56:50,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:50,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:56:50,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:50,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966218731] [2024-11-28 04:56:50,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966218731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:50,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:50,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:56:50,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102609174] [2024-11-28 04:56:50,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:50,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:50,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:50,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:50,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:50,900 INFO L87 Difference]: Start difference. First operand 26585 states and 45408 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:53,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:56:53,308 INFO L93 Difference]: Finished difference Result 72468 states and 124190 transitions. [2024-11-28 04:56:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:56:53,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 113 [2024-11-28 04:56:53,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:56:53,650 INFO L225 Difference]: With dead ends: 72468 [2024-11-28 04:56:53,650 INFO L226 Difference]: Without dead ends: 48573 [2024-11-28 04:56:53,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:53,757 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 81 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:56:53,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 762 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:56:53,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48573 states. [2024-11-28 04:56:56,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48573 to 48565. [2024-11-28 04:56:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48565 states, 40031 states have (on average 1.6104768804176763) internal successors, (64469), 40038 states have internal predecessors, (64469), 8514 states have call successors, (8514), 15 states have call predecessors, (8514), 19 states have return successors, (9659), 8513 states have call predecessors, (9659), 8513 states have call successors, (9659) [2024-11-28 04:56:56,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48565 states to 48565 states and 82642 transitions. [2024-11-28 04:56:56,987 INFO L78 Accepts]: Start accepts. Automaton has 48565 states and 82642 transitions. Word has length 113 [2024-11-28 04:56:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:56:56,988 INFO L471 AbstractCegarLoop]: Abstraction has 48565 states and 82642 transitions. [2024-11-28 04:56:56,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:56:56,988 INFO L276 IsEmpty]: Start isEmpty. Operand 48565 states and 82642 transitions. [2024-11-28 04:56:57,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-28 04:56:57,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:56:57,025 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:56:57,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 04:56:57,026 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:56:57,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:56:57,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1428828291, now seen corresponding path program 1 times [2024-11-28 04:56:57,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:56:57,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558472418] [2024-11-28 04:56:57,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:56:57,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:56:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:56:57,124 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:56:57,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:56:57,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558472418] [2024-11-28 04:56:57,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558472418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:56:57,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:56:57,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:56:57,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599187982] [2024-11-28 04:56:57,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:56:57,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:56:57,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:56:57,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:56:57,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:56:57,126 INFO L87 Difference]: Start difference. First operand 48565 states and 82642 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:57:00,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:00,084 INFO L93 Difference]: Finished difference Result 90435 states and 154233 transitions. [2024-11-28 04:57:00,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:57:00,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 114 [2024-11-28 04:57:00,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:00,693 INFO L225 Difference]: With dead ends: 90435 [2024-11-28 04:57:00,693 INFO L226 Difference]: Without dead ends: 90329 [2024-11-28 04:57:00,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:57:00,735 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 76 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:00,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 766 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:57:00,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90329 states. [2024-11-28 04:57:04,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90329 to 90321. [2024-11-28 04:57:04,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90321 states, 74988 states have (on average 1.6024830639568999) internal successors, (120167), 74995 states have internal predecessors, (120167), 15313 states have call successors, (15313), 15 states have call predecessors, (15313), 19 states have return successors, (17504), 15312 states have call predecessors, (17504), 15312 states have call successors, (17504) [2024-11-28 04:57:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90321 states to 90321 states and 152984 transitions. [2024-11-28 04:57:05,212 INFO L78 Accepts]: Start accepts. Automaton has 90321 states and 152984 transitions. Word has length 114 [2024-11-28 04:57:05,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:05,213 INFO L471 AbstractCegarLoop]: Abstraction has 90321 states and 152984 transitions. [2024-11-28 04:57:05,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 04:57:05,213 INFO L276 IsEmpty]: Start isEmpty. Operand 90321 states and 152984 transitions. [2024-11-28 04:57:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-28 04:57:05,245 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:05,246 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:05,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 04:57:05,246 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:57:05,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:05,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1256305342, now seen corresponding path program 1 times [2024-11-28 04:57:05,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:05,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874500413] [2024-11-28 04:57:05,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:05,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:06,193 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:57:06,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:57:06,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874500413] [2024-11-28 04:57:06,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874500413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:57:06,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:57:06,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 04:57:06,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607789010] [2024-11-28 04:57:06,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:57:06,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:57:06,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:57:06,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:57:06,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:57:06,195 INFO L87 Difference]: Start difference. First operand 90321 states and 152984 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-28 04:57:12,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:57:12,704 INFO L93 Difference]: Finished difference Result 179995 states and 310361 transitions. [2024-11-28 04:57:12,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:57:12,705 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 115 [2024-11-28 04:57:12,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:57:13,618 INFO L225 Difference]: With dead ends: 179995 [2024-11-28 04:57:13,618 INFO L226 Difference]: Without dead ends: 179897 [2024-11-28 04:57:13,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:57:13,701 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 968 mSDsluCounter, 3534 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 4005 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:57:13,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 4005 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:57:13,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179897 states. [2024-11-28 04:57:21,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179897 to 179869. [2024-11-28 04:57:21,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179869 states, 149416 states have (on average 1.603375809819564) internal successors, (239570), 149318 states have internal predecessors, (239570), 30409 states have call successors, (30409), 38 states have call predecessors, (30409), 43 states have return successors, (38058), 30518 states have call predecessors, (38058), 30406 states have call successors, (38058) [2024-11-28 04:57:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179869 states to 179869 states and 308037 transitions. [2024-11-28 04:57:23,517 INFO L78 Accepts]: Start accepts. Automaton has 179869 states and 308037 transitions. Word has length 115 [2024-11-28 04:57:23,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:57:23,518 INFO L471 AbstractCegarLoop]: Abstraction has 179869 states and 308037 transitions. [2024-11-28 04:57:23,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-28 04:57:23,518 INFO L276 IsEmpty]: Start isEmpty. Operand 179869 states and 308037 transitions. [2024-11-28 04:57:23,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 04:57:23,621 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:57:23,621 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:57:23,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 04:57:23,621 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:57:23,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:57:23,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1126277779, now seen corresponding path program 1 times [2024-11-28 04:57:23,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:57:23,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176281350] [2024-11-28 04:57:23,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:57:23,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:57:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:57:23,864 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 04:57:23,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:57:23,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176281350] [2024-11-28 04:57:23,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176281350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:57:23,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:57:23,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:57:23,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801704933] [2024-11-28 04:57:23,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:57:23,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:57:23,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:57:23,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:57:23,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:57:23,867 INFO L87 Difference]: Start difference. First operand 179869 states and 308037 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 6 states have internal predecessors, (81), 4 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10)