./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product22.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_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/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_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/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_7e18d9d6-eacd-48d2-9999-275c93aa4673/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 42f22b71ca501045e9e0edcb0da831d4df6c9a8e36f5c60b39b69b3cb971731d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:52:43,571 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:52:43,676 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:52:43,682 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:52:43,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:52:43,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:52:43,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:52:43,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:52:43,712 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:52:43,712 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:52:43,712 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:52:43,712 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:52:43,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:52:43,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:52:43,713 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:52:43,713 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:52:43,713 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:52:43,713 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:52:43,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:52:43,713 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:52:43,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:52:43,714 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:52:43,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:52:43,714 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:52:43,714 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:52:43,714 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:52:43,714 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:52:43,714 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:52:43,714 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:52:43,715 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:52:43,715 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:52:43,715 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:52:43,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:52:43,715 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:52:43,715 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:52:43,715 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:52:43,715 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:52:43,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:52:43,716 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:52:43,716 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:52:43,716 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:52:43,716 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:52:43,716 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:52:43,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:52:43,716 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:52:43,717 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:52:43,717 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:52:43,717 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:52:43,717 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_7e18d9d6-eacd-48d2-9999-275c93aa4673/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 -> 42f22b71ca501045e9e0edcb0da831d4df6c9a8e36f5c60b39b69b3cb971731d [2024-11-28 02:52:44,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:52:44,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:52:44,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:52:44,107 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:52:44,108 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:52:44,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/email_spec1_product22.cil.c [2024-11-28 02:52:47,344 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/data/7e2567760/9ef8c31bbdb6494ebf286407f14cf7d4/FLAG131228932 [2024-11-28 02:52:47,802 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:52:47,803 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/sv-benchmarks/c/product-lines/email_spec1_product22.cil.c [2024-11-28 02:52:47,838 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/data/7e2567760/9ef8c31bbdb6494ebf286407f14cf7d4/FLAG131228932 [2024-11-28 02:52:47,868 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/data/7e2567760/9ef8c31bbdb6494ebf286407f14cf7d4 [2024-11-28 02:52:47,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:52:47,873 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:52:47,874 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:52:47,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:52:47,882 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:52:47,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:52:47" (1/1) ... [2024-11-28 02:52:47,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32be4992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:47, skipping insertion in model container [2024-11-28 02:52:47,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:52:47" (1/1) ... [2024-11-28 02:52:47,973 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:52:48,608 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_7e18d9d6-eacd-48d2-9999-275c93aa4673/sv-benchmarks/c/product-lines/email_spec1_product22.cil.c[33239,33252] [2024-11-28 02:52:48,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:52:48,779 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:52:48,788 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2024-11-28 02:52:48,790 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [414] [2024-11-28 02:52:48,790 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [538] [2024-11-28 02:52:48,790 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [767] [2024-11-28 02:52:48,791 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [784] [2024-11-28 02:52:48,791 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1189] [2024-11-28 02:52:48,791 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"AddressBookEncrypt_spec.i","") [1227] [2024-11-28 02:52:48,791 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1257] [2024-11-28 02:52:48,791 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1557] [2024-11-28 02:52:48,791 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1566] [2024-11-28 02:52:48,791 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2637] [2024-11-28 02:52:48,914 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_7e18d9d6-eacd-48d2-9999-275c93aa4673/sv-benchmarks/c/product-lines/email_spec1_product22.cil.c[33239,33252] [2024-11-28 02:52:49,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:52:49,057 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:52:49,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:49 WrapperNode [2024-11-28 02:52:49,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:52:49,059 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:52:49,059 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:52:49,060 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:52:49,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:49" (1/1) ... [2024-11-28 02:52:49,117 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:49" (1/1) ... [2024-11-28 02:52:49,210 INFO L138 Inliner]: procedures = 128, calls = 190, calls flagged for inlining = 59, calls inlined = 54, statements flattened = 1023 [2024-11-28 02:52:49,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:52:49,214 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:52:49,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:52:49,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:52:49,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:49" (1/1) ... [2024-11-28 02:52:49,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:49" (1/1) ... [2024-11-28 02:52:49,242 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:49" (1/1) ... [2024-11-28 02:52:49,299 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 02:52:49,299 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:49" (1/1) ... [2024-11-28 02:52:49,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:49" (1/1) ... [2024-11-28 02:52:49,333 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:49" (1/1) ... [2024-11-28 02:52:49,338 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:49" (1/1) ... [2024-11-28 02:52:49,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:49" (1/1) ... [2024-11-28 02:52:49,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:49" (1/1) ... [2024-11-28 02:52:49,370 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:49" (1/1) ... [2024-11-28 02:52:49,384 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:52:49,389 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:52:49,389 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:52:49,389 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:52:49,390 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:49" (1/1) ... [2024-11-28 02:52:49,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:52:49,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:49,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:52:49,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:52:49,488 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-28 02:52:49,488 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-28 02:52:49,489 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-28 02:52:49,489 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-28 02:52:49,489 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-28 02:52:49,489 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-28 02:52:49,489 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-28 02:52:49,489 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-28 02:52:49,489 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-28 02:52:49,489 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-28 02:52:49,489 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-28 02:52:49,490 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-28 02:52:49,490 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-28 02:52:49,490 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-28 02:52:49,490 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-28 02:52:49,490 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-28 02:52:49,490 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2024-11-28 02:52:49,490 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2024-11-28 02:52:49,490 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-28 02:52:49,490 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-28 02:52:49,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:52:49,490 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-28 02:52:49,491 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-28 02:52:49,491 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-28 02:52:49,491 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-28 02:52:49,491 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-28 02:52:49,491 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-28 02:52:49,491 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-28 02:52:49,491 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-28 02:52:49,491 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-28 02:52:49,491 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-28 02:52:49,491 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-28 02:52:49,491 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-28 02:52:49,492 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-11-28 02:52:49,492 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-11-28 02:52:49,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:52:49,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:52:49,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:52:49,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:52:49,492 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-28 02:52:49,492 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-28 02:52:49,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:52:49,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:52:49,724 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:52:49,726 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:52:51,069 INFO L? ?]: Removed 436 outVars from TransFormulas that were not future-live. [2024-11-28 02:52:51,069 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:52:51,101 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:52:51,106 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:52:51,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:51 BoogieIcfgContainer [2024-11-28 02:52:51,106 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:52:51,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:52:51,110 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:52:51,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:52:51,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:52:47" (1/3) ... [2024-11-28 02:52:51,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd30c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:52:51, skipping insertion in model container [2024-11-28 02:52:51,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:52:49" (2/3) ... [2024-11-28 02:52:51,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd30c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:52:51, skipping insertion in model container [2024-11-28 02:52:51,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:52:51" (3/3) ... [2024-11-28 02:52:51,123 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec1_product22.cil.c [2024-11-28 02:52:51,142 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:52:51,144 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec1_product22.cil.c that has 19 procedures, 320 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:52:51,246 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:52:51,261 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;@730dce96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:52:51,262 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:52:51,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 320 states, 250 states have (on average 1.532) internal successors, (383), 254 states have internal predecessors, (383), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-28 02:52:51,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 02:52:51,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:51,296 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] [2024-11-28 02:52:51,297 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:51,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:51,303 INFO L85 PathProgramCache]: Analyzing trace with hash 489059629, now seen corresponding path program 1 times [2024-11-28 02:52:51,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:51,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385588299] [2024-11-28 02:52:51,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:51,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:52,334 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 02:52:52,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:52,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385588299] [2024-11-28 02:52:52,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385588299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:52,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745539747] [2024-11-28 02:52:52,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:52,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:52,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:52,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:52,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:52:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:52,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:52:52,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:52,854 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 02:52:52,859 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:52:52,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745539747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:52,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:52:52,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-28 02:52:52,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71674106] [2024-11-28 02:52:52,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:52,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:52:52,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:52,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:52:52,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:52:52,899 INFO L87 Difference]: Start difference. First operand has 320 states, 250 states have (on average 1.532) internal successors, (383), 254 states have internal predecessors, (383), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:52:52,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:52,966 INFO L93 Difference]: Finished difference Result 482 states and 713 transitions. [2024-11-28 02:52:52,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:52:52,968 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2024-11-28 02:52:52,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:52,983 INFO L225 Difference]: With dead ends: 482 [2024-11-28 02:52:52,983 INFO L226 Difference]: Without dead ends: 313 [2024-11-28 02:52:52,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 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 02:52:52,992 INFO L435 NwaCegarLoop]: 479 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, 479 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 02:52:52,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:52:53,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-28 02:52:53,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2024-11-28 02:52:53,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 244 states have (on average 1.5245901639344261) internal successors, (372), 247 states have internal predecessors, (372), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-28 02:52:53,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 471 transitions. [2024-11-28 02:52:53,076 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 471 transitions. Word has length 89 [2024-11-28 02:52:53,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:53,079 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 471 transitions. [2024-11-28 02:52:53,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:52:53,080 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 471 transitions. [2024-11-28 02:52:53,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 02:52:53,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:53,089 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] [2024-11-28 02:52:53,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:52:53,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:52:53,292 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:53,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:53,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1978910439, now seen corresponding path program 1 times [2024-11-28 02:52:53,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:53,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573408721] [2024-11-28 02:52:53,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:53,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:53,628 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 02:52:53,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:53,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573408721] [2024-11-28 02:52:53,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573408721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:53,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798411351] [2024-11-28 02:52:53,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:53,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:53,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:53,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:53,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:52:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:54,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:52:54,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:54,127 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 02:52:54,127 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:52:54,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798411351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:54,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:52:54,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 02:52:54,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205058924] [2024-11-28 02:52:54,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:54,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:52:54,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:54,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:52:54,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:52:54,133 INFO L87 Difference]: Start difference. First operand 313 states and 471 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:52:54,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:54,208 INFO L93 Difference]: Finished difference Result 471 states and 693 transitions. [2024-11-28 02:52:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:52:54,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 89 [2024-11-28 02:52:54,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:54,216 INFO L225 Difference]: With dead ends: 471 [2024-11-28 02:52:54,216 INFO L226 Difference]: Without dead ends: 315 [2024-11-28 02:52:54,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 89 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 02:52:54,218 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 1 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 936 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 02:52:54,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 936 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:52:54,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-28 02:52:54,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 314. [2024-11-28 02:52:54,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 245 states have (on average 1.5224489795918368) internal successors, (373), 248 states have internal predecessors, (373), 50 states have call successors, (50), 18 states have call predecessors, (50), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-28 02:52:54,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 472 transitions. [2024-11-28 02:52:54,260 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 472 transitions. Word has length 89 [2024-11-28 02:52:54,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:54,263 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 472 transitions. [2024-11-28 02:52:54,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:52:54,263 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 472 transitions. [2024-11-28 02:52:54,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 02:52:54,270 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:54,270 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, 1, 1, 1, 1, 1] [2024-11-28 02:52:54,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:52:54,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:54,471 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:54,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:54,472 INFO L85 PathProgramCache]: Analyzing trace with hash -474353932, now seen corresponding path program 1 times [2024-11-28 02:52:54,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:54,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27622861] [2024-11-28 02:52:54,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:54,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:54,918 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 02:52:54,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:54,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27622861] [2024-11-28 02:52:54,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27622861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:54,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729707691] [2024-11-28 02:52:54,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:54,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:54,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:54,924 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:54,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:52:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:55,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:52:55,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:55,357 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 02:52:55,357 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:52:55,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729707691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:55,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:52:55,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 02:52:55,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184339567] [2024-11-28 02:52:55,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:55,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:52:55,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:55,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:52:55,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:52:55,361 INFO L87 Difference]: Start difference. First operand 314 states and 472 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:52:55,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:55,416 INFO L93 Difference]: Finished difference Result 663 states and 1011 transitions. [2024-11-28 02:52:55,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:52:55,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2024-11-28 02:52:55,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:55,424 INFO L225 Difference]: With dead ends: 663 [2024-11-28 02:52:55,425 INFO L226 Difference]: Without dead ends: 375 [2024-11-28 02:52:55,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 97 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 02:52:55,428 INFO L435 NwaCegarLoop]: 485 mSDtfsCounter, 115 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 910 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 02:52:55,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 910 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:52:55,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-28 02:52:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 367. [2024-11-28 02:52:55,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 287 states have (on average 1.5400696864111498) internal successors, (442), 290 states have internal predecessors, (442), 61 states have call successors, (61), 18 states have call predecessors, (61), 18 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 02:52:55,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 563 transitions. [2024-11-28 02:52:55,484 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 563 transitions. Word has length 97 [2024-11-28 02:52:55,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:55,484 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 563 transitions. [2024-11-28 02:52:55,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:52:55,484 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 563 transitions. [2024-11-28 02:52:55,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 02:52:55,489 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:55,489 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, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:55,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:52:55,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:55,691 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:55,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:55,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1024822200, now seen corresponding path program 1 times [2024-11-28 02:52:55,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:55,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998196505] [2024-11-28 02:52:55,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:55,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:55,975 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 02:52:55,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:55,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998196505] [2024-11-28 02:52:55,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998196505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:55,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603631314] [2024-11-28 02:52:55,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:55,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:55,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:55,980 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:55,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:52:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:56,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:52:56,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:56,454 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 02:52:56,456 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:52:56,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603631314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:56,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:52:56,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-28 02:52:56,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568047129] [2024-11-28 02:52:56,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:56,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:52:56,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:56,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:52:56,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:52:56,464 INFO L87 Difference]: Start difference. First operand 367 states and 563 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:52:56,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:56,580 INFO L93 Difference]: Finished difference Result 725 states and 1116 transitions. [2024-11-28 02:52:56,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:52:56,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2024-11-28 02:52:56,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:56,587 INFO L225 Difference]: With dead ends: 725 [2024-11-28 02:52:56,587 INFO L226 Difference]: Without dead ends: 369 [2024-11-28 02:52:56,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 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 02:52:56,592 INFO L435 NwaCegarLoop]: 463 mSDtfsCounter, 2 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1841 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 02:52:56,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1841 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:52:56,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-11-28 02:52:56,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2024-11-28 02:52:56,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 288 states have (on average 1.5381944444444444) internal successors, (443), 292 states have internal predecessors, (443), 61 states have call successors, (61), 18 states have call predecessors, (61), 19 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2024-11-28 02:52:56,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 566 transitions. [2024-11-28 02:52:56,628 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 566 transitions. Word has length 98 [2024-11-28 02:52:56,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:56,628 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 566 transitions. [2024-11-28 02:52:56,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:52:56,629 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 566 transitions. [2024-11-28 02:52:56,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 02:52:56,634 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:56,635 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, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:56,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:52:56,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:56,835 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:56,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:56,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1543936057, now seen corresponding path program 1 times [2024-11-28 02:52:56,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:56,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578707047] [2024-11-28 02:52:56,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:56,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:57,100 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 02:52:57,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:57,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578707047] [2024-11-28 02:52:57,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578707047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:57,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996232965] [2024-11-28 02:52:57,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:57,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:57,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:57,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:57,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:52:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:57,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:52:57,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:57,561 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 02:52:57,561 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:52:57,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996232965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:57,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:52:57,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-28 02:52:57,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695510166] [2024-11-28 02:52:57,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:57,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:52:57,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:57,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:52:57,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:52:57,565 INFO L87 Difference]: Start difference. First operand 369 states and 566 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:52:57,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:57,694 INFO L93 Difference]: Finished difference Result 727 states and 1121 transitions. [2024-11-28 02:52:57,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:52:57,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2024-11-28 02:52:57,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:57,700 INFO L225 Difference]: With dead ends: 727 [2024-11-28 02:52:57,700 INFO L226 Difference]: Without dead ends: 371 [2024-11-28 02:52:57,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 97 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 02:52:57,703 INFO L435 NwaCegarLoop]: 461 mSDtfsCounter, 2 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1827 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 02:52:57,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1827 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:52:57,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-28 02:52:57,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2024-11-28 02:52:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 289 states have (on average 1.5363321799307958) internal successors, (444), 294 states have internal predecessors, (444), 61 states have call successors, (61), 18 states have call predecessors, (61), 20 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2024-11-28 02:52:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 572 transitions. [2024-11-28 02:52:57,742 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 572 transitions. Word has length 99 [2024-11-28 02:52:57,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:57,743 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 572 transitions. [2024-11-28 02:52:57,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:52:57,744 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 572 transitions. [2024-11-28 02:52:57,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 02:52:57,747 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:57,747 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] [2024-11-28 02:52:57,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:52:57,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:57,947 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:57,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:57,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1244989634, now seen corresponding path program 1 times [2024-11-28 02:52:57,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:57,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363276855] [2024-11-28 02:52:57,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:57,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:58,163 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 02:52:58,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:58,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363276855] [2024-11-28 02:52:58,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363276855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:58,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:58,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:52:58,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816013734] [2024-11-28 02:52:58,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:58,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:52:58,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:58,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:52:58,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:52:58,166 INFO L87 Difference]: Start difference. First operand 371 states and 572 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:52:58,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:58,247 INFO L93 Difference]: Finished difference Result 719 states and 1112 transitions. [2024-11-28 02:52:58,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:52:58,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2024-11-28 02:52:58,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:58,252 INFO L225 Difference]: With dead ends: 719 [2024-11-28 02:52:58,252 INFO L226 Difference]: Without dead ends: 371 [2024-11-28 02:52:58,257 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 02:52:58,258 INFO L435 NwaCegarLoop]: 464 mSDtfsCounter, 2 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1845 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 02:52:58,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1845 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:52:58,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-28 02:52:58,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2024-11-28 02:52:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 289 states have (on average 1.5363321799307958) internal successors, (444), 294 states have internal predecessors, (444), 61 states have call successors, (61), 18 states have call predecessors, (61), 20 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2024-11-28 02:52:58,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 571 transitions. [2024-11-28 02:52:58,294 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 571 transitions. Word has length 100 [2024-11-28 02:52:58,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:58,295 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 571 transitions. [2024-11-28 02:52:58,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:52:58,295 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 571 transitions. [2024-11-28 02:52:58,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-28 02:52:58,300 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:58,300 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, 1, 1, 1, 1] [2024-11-28 02:52:58,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:52:58,300 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:58,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:58,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1637149725, now seen corresponding path program 2 times [2024-11-28 02:52:58,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:58,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76524798] [2024-11-28 02:52:58,301 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:52:58,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:58,351 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:52:58,351 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:58,508 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 02:52:58,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:58,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76524798] [2024-11-28 02:52:58,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76524798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:58,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:58,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:52:58,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359637202] [2024-11-28 02:52:58,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:58,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:52:58,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:58,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:52:58,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:52:58,511 INFO L87 Difference]: Start difference. First operand 371 states and 571 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:52:58,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:58,596 INFO L93 Difference]: Finished difference Result 717 states and 1107 transitions. [2024-11-28 02:52:58,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:52:58,597 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2024-11-28 02:52:58,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:58,602 INFO L225 Difference]: With dead ends: 717 [2024-11-28 02:52:58,604 INFO L226 Difference]: Without dead ends: 371 [2024-11-28 02:52:58,605 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 02:52:58,607 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 2 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1831 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:52:58,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1831 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:52:58,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-11-28 02:52:58,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2024-11-28 02:52:58,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 289 states have (on average 1.5363321799307958) internal successors, (444), 294 states have internal predecessors, (444), 61 states have call successors, (61), 18 states have call predecessors, (61), 20 states have return successors, (65), 60 states have call predecessors, (65), 60 states have call successors, (65) [2024-11-28 02:52:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 570 transitions. [2024-11-28 02:52:58,644 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 570 transitions. Word has length 101 [2024-11-28 02:52:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:58,644 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 570 transitions. [2024-11-28 02:52:58,644 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:52:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 570 transitions. [2024-11-28 02:52:58,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 02:52:58,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:58,649 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, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:58,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:52:58,650 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:58,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:58,650 INFO L85 PathProgramCache]: Analyzing trace with hash -126334656, now seen corresponding path program 3 times [2024-11-28 02:52:58,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:58,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369156567] [2024-11-28 02:52:58,651 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:52:58,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:58,685 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:52:58,686 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:52:58,815 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 02:52:58,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:58,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369156567] [2024-11-28 02:52:58,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369156567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:58,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:58,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:52:58,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465302887] [2024-11-28 02:52:58,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:58,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:52:58,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:58,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:52:58,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:52:58,818 INFO L87 Difference]: Start difference. First operand 371 states and 570 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:52:58,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:58,903 INFO L93 Difference]: Finished difference Result 719 states and 1113 transitions. [2024-11-28 02:52:58,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:52:58,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 102 [2024-11-28 02:52:58,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:58,907 INFO L225 Difference]: With dead ends: 719 [2024-11-28 02:52:58,907 INFO L226 Difference]: Without dead ends: 373 [2024-11-28 02:52:58,909 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 02:52:58,909 INFO L435 NwaCegarLoop]: 465 mSDtfsCounter, 1 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:52:58,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1842 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:52:58,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-11-28 02:52:58,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2024-11-28 02:52:58,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 290 states have (on average 1.5344827586206897) internal successors, (445), 296 states have internal predecessors, (445), 61 states have call successors, (61), 18 states have call predecessors, (61), 21 states have return successors, (70), 60 states have call predecessors, (70), 60 states have call successors, (70) [2024-11-28 02:52:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 576 transitions. [2024-11-28 02:52:58,933 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 576 transitions. Word has length 102 [2024-11-28 02:52:58,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:58,934 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 576 transitions. [2024-11-28 02:52:58,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:52:58,934 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 576 transitions. [2024-11-28 02:52:58,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 02:52:58,937 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:58,937 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, 1, 1, 1, 1, 1, 1] [2024-11-28 02:52:58,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:52:58,937 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:58,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:58,938 INFO L85 PathProgramCache]: Analyzing trace with hash -31147938, now seen corresponding path program 1 times [2024-11-28 02:52:58,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:58,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276759382] [2024-11-28 02:52:58,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:58,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:59,134 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 02:52:59,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:59,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276759382] [2024-11-28 02:52:59,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276759382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:52:59,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:52:59,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:52:59,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876401668] [2024-11-28 02:52:59,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:52:59,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:52:59,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:52:59,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:52:59,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:52:59,137 INFO L87 Difference]: Start difference. First operand 373 states and 576 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:52:59,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:52:59,204 INFO L93 Difference]: Finished difference Result 725 states and 1123 transitions. [2024-11-28 02:52:59,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:52:59,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 103 [2024-11-28 02:52:59,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:52:59,208 INFO L225 Difference]: With dead ends: 725 [2024-11-28 02:52:59,208 INFO L226 Difference]: Without dead ends: 375 [2024-11-28 02:52:59,210 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 02:52:59,210 INFO L435 NwaCegarLoop]: 465 mSDtfsCounter, 1 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1848 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 02:52:59,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1848 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:52:59,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-28 02:52:59,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2024-11-28 02:52:59,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 291 states have (on average 1.5326460481099657) internal successors, (446), 298 states have internal predecessors, (446), 61 states have call successors, (61), 18 states have call predecessors, (61), 22 states have return successors, (72), 60 states have call predecessors, (72), 60 states have call successors, (72) [2024-11-28 02:52:59,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 579 transitions. [2024-11-28 02:52:59,241 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 579 transitions. Word has length 103 [2024-11-28 02:52:59,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:52:59,241 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 579 transitions. [2024-11-28 02:52:59,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:52:59,241 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 579 transitions. [2024-11-28 02:52:59,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 02:52:59,244 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:52:59,244 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] [2024-11-28 02:52:59,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:52:59,244 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:52:59,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:52:59,245 INFO L85 PathProgramCache]: Analyzing trace with hash -916210824, now seen corresponding path program 1 times [2024-11-28 02:52:59,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:52:59,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057530646] [2024-11-28 02:52:59,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:59,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:52:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 02:52:59,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:52:59,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057530646] [2024-11-28 02:52:59,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057530646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:52:59,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631755779] [2024-11-28 02:52:59,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:52:59,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:52:59,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:52:59,513 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:52:59,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:52:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:52:59,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:52:59,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:52:59,950 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 02:52:59,950 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:53:00,077 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 02:53:00,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631755779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:53:00,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:53:00,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2024-11-28 02:53:00,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389864908] [2024-11-28 02:53:00,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:53:00,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:53:00,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:00,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:53:00,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:53:00,080 INFO L87 Difference]: Start difference. First operand 375 states and 579 transitions. Second operand has 11 states, 10 states have (on average 11.0) internal successors, (110), 11 states have internal predecessors, (110), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-28 02:53:00,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:00,996 INFO L93 Difference]: Finished difference Result 1095 states and 1763 transitions. [2024-11-28 02:53:00,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:53:00,996 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.0) internal successors, (110), 11 states have internal predecessors, (110), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 104 [2024-11-28 02:53:00,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:01,002 INFO L225 Difference]: With dead ends: 1095 [2024-11-28 02:53:01,003 INFO L226 Difference]: Without dead ends: 748 [2024-11-28 02:53:01,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:53:01,006 INFO L435 NwaCegarLoop]: 464 mSDtfsCounter, 1238 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:53:01,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 2984 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:53:01,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2024-11-28 02:53:01,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 724. [2024-11-28 02:53:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 576 states have (on average 1.5850694444444444) internal successors, (913), 582 states have internal predecessors, (913), 125 states have call successors, (125), 19 states have call predecessors, (125), 22 states have return successors, (146), 124 states have call predecessors, (146), 124 states have call successors, (146) [2024-11-28 02:53:01,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1184 transitions. [2024-11-28 02:53:01,068 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1184 transitions. Word has length 104 [2024-11-28 02:53:01,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:01,069 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 1184 transitions. [2024-11-28 02:53:01,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.0) internal successors, (110), 11 states have internal predecessors, (110), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-28 02:53:01,069 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1184 transitions. [2024-11-28 02:53:01,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-28 02:53:01,074 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:01,075 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 02:53:01,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:53:01,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e18d9d6-eacd-48d2-9999-275c93aa4673/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:53:01,276 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:01,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:01,276 INFO L85 PathProgramCache]: Analyzing trace with hash 256960849, now seen corresponding path program 1 times [2024-11-28 02:53:01,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:01,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907203208] [2024-11-28 02:53:01,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:01,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:01,364 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 02:53:01,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:01,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907203208] [2024-11-28 02:53:01,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907203208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:01,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:01,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:53:01,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578459952] [2024-11-28 02:53:01,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:01,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:53:01,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:01,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:53:01,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:53:01,367 INFO L87 Difference]: Start difference. First operand 724 states and 1184 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:01,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:01,460 INFO L93 Difference]: Finished difference Result 1696 states and 2819 transitions. [2024-11-28 02:53:01,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:53:01,460 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2024-11-28 02:53:01,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:01,469 INFO L225 Difference]: With dead ends: 1696 [2024-11-28 02:53:01,469 INFO L226 Difference]: Without dead ends: 1050 [2024-11-28 02:53:01,472 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 02:53:01,473 INFO L435 NwaCegarLoop]: 491 mSDtfsCounter, 112 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 952 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 02:53:01,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 952 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:53:01,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2024-11-28 02:53:01,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1042. [2024-11-28 02:53:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 830 states have (on average 1.6036144578313254) internal successors, (1331), 836 states have internal predecessors, (1331), 189 states have call successors, (189), 19 states have call predecessors, (189), 22 states have return successors, (220), 188 states have call predecessors, (220), 188 states have call successors, (220) [2024-11-28 02:53:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1740 transitions. [2024-11-28 02:53:01,564 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1740 transitions. Word has length 108 [2024-11-28 02:53:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:01,564 INFO L471 AbstractCegarLoop]: Abstraction has 1042 states and 1740 transitions. [2024-11-28 02:53:01,564 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1740 transitions. [2024-11-28 02:53:01,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-28 02:53:01,573 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:01,573 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 02:53:01,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:53:01,574 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:01,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:01,574 INFO L85 PathProgramCache]: Analyzing trace with hash -930399776, now seen corresponding path program 1 times [2024-11-28 02:53:01,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:01,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199106095] [2024-11-28 02:53:01,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:01,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:01,670 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 02:53:01,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:01,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199106095] [2024-11-28 02:53:01,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199106095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:01,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:01,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:53:01,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266330984] [2024-11-28 02:53:01,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:01,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:53:01,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:01,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:53:01,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:53:01,673 INFO L87 Difference]: Start difference. First operand 1042 states and 1740 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:01,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:01,786 INFO L93 Difference]: Finished difference Result 2484 states and 4170 transitions. [2024-11-28 02:53:01,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:53:01,787 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2024-11-28 02:53:01,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:01,799 INFO L225 Difference]: With dead ends: 2484 [2024-11-28 02:53:01,799 INFO L226 Difference]: Without dead ends: 1571 [2024-11-28 02:53:01,803 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 02:53:01,804 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 110 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 932 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 02:53:01,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 932 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:53:01,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2024-11-28 02:53:01,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1563. [2024-11-28 02:53:01,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1256 states have (on average 1.6122611464968153) internal successors, (2025), 1262 states have internal predecessors, (2025), 284 states have call successors, (284), 19 states have call predecessors, (284), 22 states have return successors, (315), 283 states have call predecessors, (315), 283 states have call successors, (315) [2024-11-28 02:53:01,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2624 transitions. [2024-11-28 02:53:01,951 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2624 transitions. Word has length 109 [2024-11-28 02:53:01,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:01,951 INFO L471 AbstractCegarLoop]: Abstraction has 1563 states and 2624 transitions. [2024-11-28 02:53:01,952 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:01,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2624 transitions. [2024-11-28 02:53:01,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 02:53:01,961 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:01,961 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 02:53:01,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:53:01,962 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:01,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash 730326143, now seen corresponding path program 1 times [2024-11-28 02:53:01,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:01,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749005050] [2024-11-28 02:53:01,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:01,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:02,052 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 02:53:02,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:02,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749005050] [2024-11-28 02:53:02,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749005050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:02,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:02,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:53:02,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245953726] [2024-11-28 02:53:02,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:02,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:53:02,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:02,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:53:02,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:53:02,056 INFO L87 Difference]: Start difference. First operand 1563 states and 2624 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:02,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:02,214 INFO L93 Difference]: Finished difference Result 3663 states and 6194 transitions. [2024-11-28 02:53:02,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:53:02,215 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2024-11-28 02:53:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:02,230 INFO L225 Difference]: With dead ends: 3663 [2024-11-28 02:53:02,230 INFO L226 Difference]: Without dead ends: 2360 [2024-11-28 02:53:02,236 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 02:53:02,236 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 108 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 929 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 02:53:02,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 929 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:53:02,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2024-11-28 02:53:02,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 2352. [2024-11-28 02:53:02,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 1922 states have (on average 1.619146722164412) internal successors, (3112), 1928 states have internal predecessors, (3112), 407 states have call successors, (407), 19 states have call predecessors, (407), 22 states have return successors, (454), 406 states have call predecessors, (454), 406 states have call successors, (454) [2024-11-28 02:53:02,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3973 transitions. [2024-11-28 02:53:02,471 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3973 transitions. Word has length 110 [2024-11-28 02:53:02,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:02,471 INFO L471 AbstractCegarLoop]: Abstraction has 2352 states and 3973 transitions. [2024-11-28 02:53:02,471 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:02,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3973 transitions. [2024-11-28 02:53:02,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-28 02:53:02,483 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:02,483 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 02:53:02,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:53:02,484 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:02,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:02,484 INFO L85 PathProgramCache]: Analyzing trace with hash -36660895, now seen corresponding path program 1 times [2024-11-28 02:53:02,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:02,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076018918] [2024-11-28 02:53:02,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:02,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:02,582 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 02:53:02,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:02,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076018918] [2024-11-28 02:53:02,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076018918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:02,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:02,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:53:02,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419636444] [2024-11-28 02:53:02,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:02,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:53:02,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:02,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:53:02,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:53:02,586 INFO L87 Difference]: Start difference. First operand 2352 states and 3973 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:02,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:02,829 INFO L93 Difference]: Finished difference Result 5501 states and 9351 transitions. [2024-11-28 02:53:02,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:53:02,830 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2024-11-28 02:53:02,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:02,861 INFO L225 Difference]: With dead ends: 5501 [2024-11-28 02:53:02,861 INFO L226 Difference]: Without dead ends: 3621 [2024-11-28 02:53:02,868 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 02:53:02,869 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 106 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 929 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 02:53:02,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 929 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:53:02,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2024-11-28 02:53:03,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 3613. [2024-11-28 02:53:03,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3004 states have (on average 1.623501997336884) internal successors, (4877), 3010 states have internal predecessors, (4877), 586 states have call successors, (586), 19 states have call predecessors, (586), 22 states have return successors, (659), 585 states have call predecessors, (659), 585 states have call successors, (659) [2024-11-28 02:53:03,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 6122 transitions. [2024-11-28 02:53:03,248 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 6122 transitions. Word has length 111 [2024-11-28 02:53:03,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:03,250 INFO L471 AbstractCegarLoop]: Abstraction has 3613 states and 6122 transitions. [2024-11-28 02:53:03,250 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:03,251 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 6122 transitions. [2024-11-28 02:53:03,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-28 02:53:03,263 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:03,264 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 02:53:03,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:53:03,264 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:03,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:03,265 INFO L85 PathProgramCache]: Analyzing trace with hash 892369115, now seen corresponding path program 1 times [2024-11-28 02:53:03,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:03,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584949219] [2024-11-28 02:53:03,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:03,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:03,367 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 02:53:03,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:03,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584949219] [2024-11-28 02:53:03,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584949219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:03,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:03,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:53:03,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586118041] [2024-11-28 02:53:03,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:03,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:53:03,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:03,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:53:03,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:53:03,371 INFO L87 Difference]: Start difference. First operand 3613 states and 6122 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:03,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:03,708 INFO L93 Difference]: Finished difference Result 8527 states and 14538 transitions. [2024-11-28 02:53:03,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:53:03,709 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2024-11-28 02:53:03,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:03,750 INFO L225 Difference]: With dead ends: 8527 [2024-11-28 02:53:03,750 INFO L226 Difference]: Without dead ends: 5707 [2024-11-28 02:53:03,761 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 02:53:03,762 INFO L435 NwaCegarLoop]: 487 mSDtfsCounter, 104 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 946 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 02:53:03,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 946 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:53:03,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2024-11-28 02:53:04,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 5699. [2024-11-28 02:53:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5699 states, 4714 states have (on average 1.618158676283411) internal successors, (7628), 4720 states have internal predecessors, (7628), 962 states have call successors, (962), 19 states have call predecessors, (962), 22 states have return successors, (1079), 961 states have call predecessors, (1079), 961 states have call successors, (1079) [2024-11-28 02:53:04,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5699 states to 5699 states and 9669 transitions. [2024-11-28 02:53:04,363 INFO L78 Accepts]: Start accepts. Automaton has 5699 states and 9669 transitions. Word has length 112 [2024-11-28 02:53:04,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:04,364 INFO L471 AbstractCegarLoop]: Abstraction has 5699 states and 9669 transitions. [2024-11-28 02:53:04,367 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 5699 states and 9669 transitions. [2024-11-28 02:53:04,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 02:53:04,397 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:04,397 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 02:53:04,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:53:04,398 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:04,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:04,398 INFO L85 PathProgramCache]: Analyzing trace with hash 424484101, now seen corresponding path program 1 times [2024-11-28 02:53:04,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:04,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939246449] [2024-11-28 02:53:04,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:04,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:04,522 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 02:53:04,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:04,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939246449] [2024-11-28 02:53:04,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939246449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:04,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:04,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:53:04,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397795732] [2024-11-28 02:53:04,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:04,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:53:04,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:04,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:53:04,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:53:04,524 INFO L87 Difference]: Start difference. First operand 5699 states and 9669 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:05,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:05,077 INFO L93 Difference]: Finished difference Result 14011 states and 23907 transitions. [2024-11-28 02:53:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:53:05,078 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2024-11-28 02:53:05,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:05,151 INFO L225 Difference]: With dead ends: 14011 [2024-11-28 02:53:05,151 INFO L226 Difference]: Without dead ends: 9491 [2024-11-28 02:53:05,170 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 02:53:05,172 INFO L435 NwaCegarLoop]: 471 mSDtfsCounter, 102 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 934 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 02:53:05,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 934 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:53:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9491 states. [2024-11-28 02:53:05,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9491 to 9483. [2024-11-28 02:53:05,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9483 states, 7892 states have (on average 1.6159401926001014) internal successors, (12753), 7898 states have internal predecessors, (12753), 1568 states have call successors, (1568), 19 states have call predecessors, (1568), 22 states have return successors, (1763), 1567 states have call predecessors, (1763), 1567 states have call successors, (1763) [2024-11-28 02:53:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9483 states to 9483 states and 16084 transitions. [2024-11-28 02:53:05,869 INFO L78 Accepts]: Start accepts. Automaton has 9483 states and 16084 transitions. Word has length 113 [2024-11-28 02:53:05,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:05,870 INFO L471 AbstractCegarLoop]: Abstraction has 9483 states and 16084 transitions. [2024-11-28 02:53:05,874 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:05,874 INFO L276 IsEmpty]: Start isEmpty. Operand 9483 states and 16084 transitions. [2024-11-28 02:53:05,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-28 02:53:05,901 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:05,901 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 02:53:05,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 02:53:05,902 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:05,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:05,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1069105559, now seen corresponding path program 1 times [2024-11-28 02:53:05,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:05,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16149743] [2024-11-28 02:53:05,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:05,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:05,992 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 02:53:05,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:05,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16149743] [2024-11-28 02:53:05,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16149743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:05,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:05,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:53:05,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031909231] [2024-11-28 02:53:05,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:05,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:53:05,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:05,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:53:05,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:53:05,997 INFO L87 Difference]: Start difference. First operand 9483 states and 16084 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:06,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:06,827 INFO L93 Difference]: Finished difference Result 24482 states and 41669 transitions. [2024-11-28 02:53:06,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:53:06,828 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2024-11-28 02:53:06,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:06,937 INFO L225 Difference]: With dead ends: 24482 [2024-11-28 02:53:06,937 INFO L226 Difference]: Without dead ends: 16638 [2024-11-28 02:53:06,976 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 02:53:06,976 INFO L435 NwaCegarLoop]: 484 mSDtfsCounter, 100 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 950 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 02:53:06,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 950 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:53:06,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16638 states. [2024-11-28 02:53:08,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16638 to 16630. [2024-11-28 02:53:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16630 states, 13836 states have (on average 1.6068950563746747) internal successors, (22233), 13842 states have internal predecessors, (22233), 2771 states have call successors, (2771), 19 states have call predecessors, (2771), 22 states have return successors, (3110), 2770 states have call predecessors, (3110), 2770 states have call successors, (3110) [2024-11-28 02:53:08,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16630 states to 16630 states and 28114 transitions. [2024-11-28 02:53:08,268 INFO L78 Accepts]: Start accepts. Automaton has 16630 states and 28114 transitions. Word has length 114 [2024-11-28 02:53:08,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:08,269 INFO L471 AbstractCegarLoop]: Abstraction has 16630 states and 28114 transitions. [2024-11-28 02:53:08,269 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:08,269 INFO L276 IsEmpty]: Start isEmpty. Operand 16630 states and 28114 transitions. [2024-11-28 02:53:08,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-28 02:53:08,298 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:08,299 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 02:53:08,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:53:08,300 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:08,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:08,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2088914342, now seen corresponding path program 1 times [2024-11-28 02:53:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:08,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073929332] [2024-11-28 02:53:08,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:08,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:08,402 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 02:53:08,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:08,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073929332] [2024-11-28 02:53:08,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073929332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:08,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:08,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:53:08,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878443245] [2024-11-28 02:53:08,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:08,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:53:08,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:08,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:53:08,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:53:08,406 INFO L87 Difference]: Start difference. First operand 16630 states and 28114 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:09,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:09,490 INFO L93 Difference]: Finished difference Result 44018 states and 74702 transitions. [2024-11-28 02:53:09,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:53:09,491 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2024-11-28 02:53:09,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:09,662 INFO L225 Difference]: With dead ends: 44018 [2024-11-28 02:53:09,662 INFO L226 Difference]: Without dead ends: 29675 [2024-11-28 02:53:09,720 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 02:53:09,721 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 98 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 932 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 02:53:09,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 932 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:53:09,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29675 states. [2024-11-28 02:53:11,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29675 to 29667. [2024-11-28 02:53:11,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29667 states, 24834 states have (on average 1.6023596681968268) internal successors, (39793), 24840 states have internal predecessors, (39793), 4810 states have call successors, (4810), 19 states have call predecessors, (4810), 22 states have return successors, (5423), 4809 states have call predecessors, (5423), 4809 states have call successors, (5423) [2024-11-28 02:53:11,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29667 states to 29667 states and 50026 transitions. [2024-11-28 02:53:11,824 INFO L78 Accepts]: Start accepts. Automaton has 29667 states and 50026 transitions. Word has length 115 [2024-11-28 02:53:11,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:11,825 INFO L471 AbstractCegarLoop]: Abstraction has 29667 states and 50026 transitions. [2024-11-28 02:53:11,825 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:11,825 INFO L276 IsEmpty]: Start isEmpty. Operand 29667 states and 50026 transitions. [2024-11-28 02:53:11,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 02:53:11,861 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:11,861 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 02:53:11,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:53:11,862 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:11,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:11,863 INFO L85 PathProgramCache]: Analyzing trace with hash 610871147, now seen corresponding path program 1 times [2024-11-28 02:53:11,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:11,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488181367] [2024-11-28 02:53:11,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:11,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:11,962 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 02:53:11,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:11,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488181367] [2024-11-28 02:53:11,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488181367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:11,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:11,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:53:11,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014743737] [2024-11-28 02:53:11,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:11,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:53:11,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:11,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:53:11,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:53:11,964 INFO L87 Difference]: Start difference. First operand 29667 states and 50026 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:13,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:13,922 INFO L93 Difference]: Finished difference Result 80920 states and 136859 transitions. [2024-11-28 02:53:13,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:53:13,922 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 116 [2024-11-28 02:53:13,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:14,196 INFO L225 Difference]: With dead ends: 80920 [2024-11-28 02:53:14,196 INFO L226 Difference]: Without dead ends: 54315 [2024-11-28 02:53:14,271 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 02:53:14,271 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 96 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 932 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 02:53:14,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 932 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:53:14,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54315 states. [2024-11-28 02:53:16,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54315 to 54307. [2024-11-28 02:53:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54307 states, 45759 states have (on average 1.5965165322668764) internal successors, (73055), 45765 states have internal predecessors, (73055), 8525 states have call successors, (8525), 19 states have call predecessors, (8525), 22 states have return successors, (9670), 8524 states have call predecessors, (9670), 8524 states have call successors, (9670) [2024-11-28 02:53:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54307 states to 54307 states and 91250 transitions. [2024-11-28 02:53:16,938 INFO L78 Accepts]: Start accepts. Automaton has 54307 states and 91250 transitions. Word has length 116 [2024-11-28 02:53:16,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:16,939 INFO L471 AbstractCegarLoop]: Abstraction has 54307 states and 91250 transitions. [2024-11-28 02:53:16,939 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, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:16,939 INFO L276 IsEmpty]: Start isEmpty. Operand 54307 states and 91250 transitions. [2024-11-28 02:53:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 02:53:16,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:16,973 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, 1] [2024-11-28 02:53:16,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:53:16,973 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:16,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:16,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1462139738, now seen corresponding path program 1 times [2024-11-28 02:53:16,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:16,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030835062] [2024-11-28 02:53:16,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:16,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:17,048 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 02:53:17,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:17,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030835062] [2024-11-28 02:53:17,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030835062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:17,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:17,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:53:17,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731682412] [2024-11-28 02:53:17,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:17,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:53:17,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:17,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:53:17,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:53:17,050 INFO L87 Difference]: Start difference. First operand 54307 states and 91250 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:20,703 INFO L93 Difference]: Finished difference Result 101457 states and 170757 transitions. [2024-11-28 02:53:20,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:53:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 117 [2024-11-28 02:53:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:21,373 INFO L225 Difference]: With dead ends: 101457 [2024-11-28 02:53:21,373 INFO L226 Difference]: Without dead ends: 101301 [2024-11-28 02:53:21,407 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 02:53:21,411 INFO L435 NwaCegarLoop]: 478 mSDtfsCounter, 91 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 946 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 02:53:21,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 946 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:53:21,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101301 states. [2024-11-28 02:53:25,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101301 to 101293. [2024-11-28 02:53:25,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101293 states, 85946 states have (on average 1.5893467991529564) internal successors, (136598), 85952 states have internal predecessors, (136598), 15324 states have call successors, (15324), 19 states have call predecessors, (15324), 22 states have return successors, (17515), 15323 states have call predecessors, (17515), 15323 states have call successors, (17515) [2024-11-28 02:53:26,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101293 states to 101293 states and 169437 transitions. [2024-11-28 02:53:26,177 INFO L78 Accepts]: Start accepts. Automaton has 101293 states and 169437 transitions. Word has length 117 [2024-11-28 02:53:26,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:53:26,177 INFO L471 AbstractCegarLoop]: Abstraction has 101293 states and 169437 transitions. [2024-11-28 02:53:26,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 02:53:26,178 INFO L276 IsEmpty]: Start isEmpty. Operand 101293 states and 169437 transitions. [2024-11-28 02:53:26,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 02:53:26,205 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:53:26,206 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, 1, 1] [2024-11-28 02:53:26,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:53:26,206 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:53:26,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:53:26,206 INFO L85 PathProgramCache]: Analyzing trace with hash 941237834, now seen corresponding path program 1 times [2024-11-28 02:53:26,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:53:26,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269606323] [2024-11-28 02:53:26,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:53:26,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:53:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:53:26,968 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 02:53:26,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:53:26,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269606323] [2024-11-28 02:53:26,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269606323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:53:26,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:53:26,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 02:53:26,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251969547] [2024-11-28 02:53:26,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:53:26,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:53:26,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:53:26,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:53:26,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:53:26,972 INFO L87 Difference]: Start difference. First operand 101293 states and 169437 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-28 02:53:33,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:53:33,518 INFO L93 Difference]: Finished difference Result 201890 states and 343197 transitions. [2024-11-28 02:53:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:53:33,518 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 states have internal predecessors, (81), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 118 [2024-11-28 02:53:33,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:53:34,745 INFO L225 Difference]: With dead ends: 201890 [2024-11-28 02:53:34,745 INFO L226 Difference]: Without dead ends: 201740 [2024-11-28 02:53:34,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:53:34,821 INFO L435 NwaCegarLoop]: 587 mSDtfsCounter, 1218 mSDsluCounter, 4885 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 5472 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:53:34,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 5472 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:53:34,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201740 states.