./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product12.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/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_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product12.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/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_5140c4d1-d340-4835-b5a9-1ba574438ae2/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 4d7925e6725ebc9ccc1628dac3a92336bad7d7149419f1b3b2e679ed4e3055d5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:33:34,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:33:34,955 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:33:34,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:33:34,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:33:34,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:33:34,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:33:34,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:33:34,993 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:33:34,993 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:33:34,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:33:34,993 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:33:34,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:33:34,994 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:33:34,994 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:33:34,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:33:34,994 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:33:34,995 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:33:34,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:33:34,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:33:34,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:33:34,995 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:33:34,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:33:34,996 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:33:34,996 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:33:34,996 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:33:34,996 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:33:34,997 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:33:34,997 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:33:34,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:33:34,997 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:33:34,997 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:33:34,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:33:34,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:33:34,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:33:34,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:33:34,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:33:34,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:33:34,998 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:33:34,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:33:34,998 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:33:34,998 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:33:34,998 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:33:34,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:33:34,999 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:33:34,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:33:34,999 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:33:34,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:33:35,000 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_5140c4d1-d340-4835-b5a9-1ba574438ae2/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 -> 4d7925e6725ebc9ccc1628dac3a92336bad7d7149419f1b3b2e679ed4e3055d5 [2024-11-28 02:33:35,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:33:35,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:33:35,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:33:35,430 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:33:35,430 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:33:35,433 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/email_spec9_product12.cil.c [2024-11-28 02:33:38,990 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/data/3d0791cf6/14bfce8dc7394896b56f83624ec72f5f/FLAG22505d327 [2024-11-28 02:33:39,476 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:33:39,480 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/sv-benchmarks/c/product-lines/email_spec9_product12.cil.c [2024-11-28 02:33:39,504 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/data/3d0791cf6/14bfce8dc7394896b56f83624ec72f5f/FLAG22505d327 [2024-11-28 02:33:39,523 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/data/3d0791cf6/14bfce8dc7394896b56f83624ec72f5f [2024-11-28 02:33:39,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:33:39,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:33:39,528 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:33:39,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:33:39,534 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:33:39,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:33:39" (1/1) ... [2024-11-28 02:33:39,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@773fb69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:39, skipping insertion in model container [2024-11-28 02:33:39,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:33:39" (1/1) ... [2024-11-28 02:33:39,600 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:33:40,328 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_5140c4d1-d340-4835-b5a9-1ba574438ae2/sv-benchmarks/c/product-lines/email_spec9_product12.cil.c[29763,29776] [2024-11-28 02:33:40,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:33:40,529 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:33:40,546 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EncryptForward_spec.i","") [48] [2024-11-28 02:33:40,548 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [105] [2024-11-28 02:33:40,548 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [122] [2024-11-28 02:33:40,548 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [160] [2024-11-28 02:33:40,550 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [405] [2024-11-28 02:33:40,550 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [811] [2024-11-28 02:33:40,550 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1091] [2024-11-28 02:33:40,551 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1457] [2024-11-28 02:33:40,551 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [1466] [2024-11-28 02:33:40,552 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1570] [2024-11-28 02:33:40,552 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2639] [2024-11-28 02:33:40,682 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_5140c4d1-d340-4835-b5a9-1ba574438ae2/sv-benchmarks/c/product-lines/email_spec9_product12.cil.c[29763,29776] [2024-11-28 02:33:40,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:33:40,816 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:33:40,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:40 WrapperNode [2024-11-28 02:33:40,817 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:33:40,818 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:33:40,818 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:33:40,819 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:33:40,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:40" (1/1) ... [2024-11-28 02:33:40,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:40" (1/1) ... [2024-11-28 02:33:40,912 INFO L138 Inliner]: procedures = 123, calls = 177, calls flagged for inlining = 51, calls inlined = 41, statements flattened = 839 [2024-11-28 02:33:40,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:33:40,913 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:33:40,913 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:33:40,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:33:40,925 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:40" (1/1) ... [2024-11-28 02:33:40,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:40" (1/1) ... [2024-11-28 02:33:40,932 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:40" (1/1) ... [2024-11-28 02:33:40,962 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 02:33:40,967 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:40" (1/1) ... [2024-11-28 02:33:40,967 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:40" (1/1) ... [2024-11-28 02:33:40,995 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:40" (1/1) ... [2024-11-28 02:33:41,000 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:40" (1/1) ... [2024-11-28 02:33:41,019 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:40" (1/1) ... [2024-11-28 02:33:41,030 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:40" (1/1) ... [2024-11-28 02:33:41,033 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:40" (1/1) ... [2024-11-28 02:33:41,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:33:41,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:33:41,051 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:33:41,051 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:33:41,054 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:40" (1/1) ... [2024-11-28 02:33:41,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:33:41,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:41,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:33:41,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:33:41,136 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-28 02:33:41,137 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-28 02:33:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-28 02:33:41,137 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-28 02:33:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-28 02:33:41,138 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-28 02:33:41,139 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-28 02:33:41,139 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-28 02:33:41,139 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-28 02:33:41,140 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-28 02:33:41,140 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-28 02:33:41,140 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-28 02:33:41,140 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-28 02:33:41,141 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-28 02:33:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-28 02:33:41,142 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-28 02:33:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:33:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-28 02:33:41,142 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-28 02:33:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-28 02:33:41,142 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-28 02:33:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-28 02:33:41,142 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-28 02:33:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-28 02:33:41,142 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-28 02:33:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-28 02:33:41,142 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-28 02:33:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-28 02:33:41,143 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-28 02:33:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:33:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:33:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:33:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:33:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-28 02:33:41,143 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-28 02:33:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:33:41,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:33:41,410 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:33:41,413 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:33:42,518 INFO L? ?]: Removed 339 outVars from TransFormulas that were not future-live. [2024-11-28 02:33:42,518 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:33:42,546 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:33:42,546 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:33:42,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:33:42 BoogieIcfgContainer [2024-11-28 02:33:42,547 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:33:42,550 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:33:42,550 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:33:42,556 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:33:42,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:33:39" (1/3) ... [2024-11-28 02:33:42,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644c02ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:33:42, skipping insertion in model container [2024-11-28 02:33:42,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:40" (2/3) ... [2024-11-28 02:33:42,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644c02ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:33:42, skipping insertion in model container [2024-11-28 02:33:42,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:33:42" (3/3) ... [2024-11-28 02:33:42,559 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec9_product12.cil.c [2024-11-28 02:33:42,578 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:33:42,581 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec9_product12.cil.c that has 16 procedures, 261 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:33:42,663 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:33:42,682 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;@6499a996, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:33:42,682 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:33:42,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 261 states, 205 states have (on average 1.5560975609756098) internal successors, (319), 209 states have internal predecessors, (319), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-28 02:33:42,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 02:33:42,719 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:42,720 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:42,720 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:42,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:42,728 INFO L85 PathProgramCache]: Analyzing trace with hash -2125040333, now seen corresponding path program 1 times [2024-11-28 02:33:42,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:42,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835163888] [2024-11-28 02:33:42,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:42,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:43,666 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 02:33:43,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:43,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835163888] [2024-11-28 02:33:43,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835163888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:43,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844105830] [2024-11-28 02:33:43,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:43,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:43,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:43,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:43,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:33:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:44,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:33:44,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:44,170 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 02:33:44,170 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:33:44,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844105830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:44,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:33:44,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-28 02:33:44,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984747135] [2024-11-28 02:33:44,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:44,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:33:44,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:44,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:33:44,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:33:44,215 INFO L87 Difference]: Start difference. First operand has 261 states, 205 states have (on average 1.5560975609756098) internal successors, (319), 209 states have internal predecessors, (319), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:33:44,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:44,298 INFO L93 Difference]: Finished difference Result 374 states and 557 transitions. [2024-11-28 02:33:44,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:33:44,302 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2024-11-28 02:33:44,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:44,316 INFO L225 Difference]: With dead ends: 374 [2024-11-28 02:33:44,316 INFO L226 Difference]: Without dead ends: 254 [2024-11-28 02:33:44,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:33:44,323 INFO L435 NwaCegarLoop]: 393 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, 393 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 02:33:44,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:33:44,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-28 02:33:44,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2024-11-28 02:33:44,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 199 states have (on average 1.5477386934673367) internal successors, (308), 202 states have internal predecessors, (308), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-28 02:33:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 385 transitions. [2024-11-28 02:33:44,444 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 385 transitions. Word has length 86 [2024-11-28 02:33:44,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:44,446 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 385 transitions. [2024-11-28 02:33:44,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:33:44,446 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 385 transitions. [2024-11-28 02:33:44,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 02:33:44,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:44,457 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:44,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:33:44,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:33:44,658 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:44,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:44,658 INFO L85 PathProgramCache]: Analyzing trace with hash -530637907, now seen corresponding path program 1 times [2024-11-28 02:33:44,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:44,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222827410] [2024-11-28 02:33:44,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:44,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:45,088 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 02:33:45,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:45,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222827410] [2024-11-28 02:33:45,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222827410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:45,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033629291] [2024-11-28 02:33:45,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:45,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:45,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:45,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:45,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:33:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:45,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:33:45,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:45,626 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 02:33:45,630 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:33:45,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033629291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:45,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:33:45,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 02:33:45,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251982953] [2024-11-28 02:33:45,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:45,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:33:45,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:45,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:33:45,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:33:45,633 INFO L87 Difference]: Start difference. First operand 254 states and 385 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:33:45,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:45,692 INFO L93 Difference]: Finished difference Result 363 states and 537 transitions. [2024-11-28 02:33:45,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:33:45,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2024-11-28 02:33:45,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:45,703 INFO L225 Difference]: With dead ends: 363 [2024-11-28 02:33:45,703 INFO L226 Difference]: Without dead ends: 256 [2024-11-28 02:33:45,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:33:45,706 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 1 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 764 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 02:33:45,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 764 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:33:45,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-28 02:33:45,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 255. [2024-11-28 02:33:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 200 states have (on average 1.545) internal successors, (309), 203 states have internal predecessors, (309), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-28 02:33:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 386 transitions. [2024-11-28 02:33:45,735 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 386 transitions. Word has length 86 [2024-11-28 02:33:45,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:45,735 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 386 transitions. [2024-11-28 02:33:45,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:33:45,736 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 386 transitions. [2024-11-28 02:33:45,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 02:33:45,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:45,740 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:45,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:33:45,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:45,944 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:45,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:45,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1497521324, now seen corresponding path program 1 times [2024-11-28 02:33:45,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:45,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635225687] [2024-11-28 02:33:45,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:45,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:46,350 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 02:33:46,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:46,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635225687] [2024-11-28 02:33:46,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635225687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:46,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726064355] [2024-11-28 02:33:46,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:46,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:46,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:46,356 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:46,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:33:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:46,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:33:46,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:46,824 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 02:33:46,824 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:33:46,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726064355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:46,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:33:46,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 02:33:46,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732109258] [2024-11-28 02:33:46,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:46,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:33:46,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:46,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:33:46,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:33:46,828 INFO L87 Difference]: Start difference. First operand 255 states and 386 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:33:46,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:46,889 INFO L93 Difference]: Finished difference Result 535 states and 823 transitions. [2024-11-28 02:33:46,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:33:46,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2024-11-28 02:33:46,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:46,897 INFO L225 Difference]: With dead ends: 535 [2024-11-28 02:33:46,897 INFO L226 Difference]: Without dead ends: 306 [2024-11-28 02:33:46,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:33:46,902 INFO L435 NwaCegarLoop]: 399 mSDtfsCounter, 99 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 738 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 02:33:46,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 738 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:33:46,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-28 02:33:46,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 298. [2024-11-28 02:33:46,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 232 states have (on average 1.5603448275862069) internal successors, (362), 235 states have internal predecessors, (362), 50 states have call successors, (50), 15 states have call predecessors, (50), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-28 02:33:46,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 461 transitions. [2024-11-28 02:33:46,960 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 461 transitions. Word has length 91 [2024-11-28 02:33:46,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:46,960 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 461 transitions. [2024-11-28 02:33:46,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:33:46,961 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 461 transitions. [2024-11-28 02:33:46,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-28 02:33:46,966 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:46,966 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:46,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:33:47,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:47,171 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:47,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:47,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2058128892, now seen corresponding path program 1 times [2024-11-28 02:33:47,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:47,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678080273] [2024-11-28 02:33:47,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:47,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:47,444 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 02:33:47,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:47,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678080273] [2024-11-28 02:33:47,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678080273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:47,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619454563] [2024-11-28 02:33:47,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:47,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:47,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:47,448 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:47,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:33:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:47,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:33:47,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:47,975 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 02:33:47,975 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:33:47,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619454563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:47,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:33:47,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-28 02:33:47,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062501887] [2024-11-28 02:33:47,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:47,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:33:47,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:47,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:33:47,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:33:47,980 INFO L87 Difference]: Start difference. First operand 298 states and 461 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:33:48,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:48,111 INFO L93 Difference]: Finished difference Result 587 states and 912 transitions. [2024-11-28 02:33:48,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:33:48,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2024-11-28 02:33:48,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:48,116 INFO L225 Difference]: With dead ends: 587 [2024-11-28 02:33:48,116 INFO L226 Difference]: Without dead ends: 300 [2024-11-28 02:33:48,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:33:48,121 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 2 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:33:48,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1497 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:33:48,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-28 02:33:48,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2024-11-28 02:33:48,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 233 states have (on average 1.55793991416309) internal successors, (363), 237 states have internal predecessors, (363), 50 states have call successors, (50), 15 states have call predecessors, (50), 16 states have return successors, (51), 49 states have call predecessors, (51), 49 states have call successors, (51) [2024-11-28 02:33:48,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 464 transitions. [2024-11-28 02:33:48,166 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 464 transitions. Word has length 92 [2024-11-28 02:33:48,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:48,167 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 464 transitions. [2024-11-28 02:33:48,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:33:48,167 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 464 transitions. [2024-11-28 02:33:48,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 02:33:48,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:48,173 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:48,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:33:48,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:48,378 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:48,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:48,381 INFO L85 PathProgramCache]: Analyzing trace with hash -432955597, now seen corresponding path program 1 times [2024-11-28 02:33:48,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:48,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332144707] [2024-11-28 02:33:48,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:48,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:48,700 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 02:33:48,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:48,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332144707] [2024-11-28 02:33:48,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332144707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:48,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423486668] [2024-11-28 02:33:48,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:48,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:48,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:48,703 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:48,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:33:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:49,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:33:49,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:49,196 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 02:33:49,196 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:33:49,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423486668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:49,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:33:49,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-28 02:33:49,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147470390] [2024-11-28 02:33:49,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:49,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:33:49,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:49,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:33:49,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:33:49,199 INFO L87 Difference]: Start difference. First operand 300 states and 464 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:33:49,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:49,296 INFO L93 Difference]: Finished difference Result 589 states and 917 transitions. [2024-11-28 02:33:49,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:33:49,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2024-11-28 02:33:49,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:49,300 INFO L225 Difference]: With dead ends: 589 [2024-11-28 02:33:49,300 INFO L226 Difference]: Without dead ends: 302 [2024-11-28 02:33:49,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:33:49,303 INFO L435 NwaCegarLoop]: 375 mSDtfsCounter, 2 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1483 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 02:33:49,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1483 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:33:49,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-28 02:33:49,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2024-11-28 02:33:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 234 states have (on average 1.5555555555555556) internal successors, (364), 239 states have internal predecessors, (364), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (56), 49 states have call predecessors, (56), 49 states have call successors, (56) [2024-11-28 02:33:49,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 470 transitions. [2024-11-28 02:33:49,324 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 470 transitions. Word has length 93 [2024-11-28 02:33:49,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:49,324 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 470 transitions. [2024-11-28 02:33:49,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:33:49,325 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 470 transitions. [2024-11-28 02:33:49,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 02:33:49,327 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:49,328 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:49,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:33:49,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:49,533 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:49,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:49,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1227935713, now seen corresponding path program 1 times [2024-11-28 02:33:49,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:49,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111615770] [2024-11-28 02:33:49,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:49,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:49,771 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 02:33:49,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:49,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111615770] [2024-11-28 02:33:49,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111615770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:49,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:49,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:33:49,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809510409] [2024-11-28 02:33:49,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:49,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:33:49,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:49,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:33:49,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:33:49,774 INFO L87 Difference]: Start difference. First operand 302 states and 470 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:33:49,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:49,853 INFO L93 Difference]: Finished difference Result 581 states and 908 transitions. [2024-11-28 02:33:49,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:33:49,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2024-11-28 02:33:49,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:49,858 INFO L225 Difference]: With dead ends: 581 [2024-11-28 02:33:49,858 INFO L226 Difference]: Without dead ends: 302 [2024-11-28 02:33:49,860 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 02:33:49,862 INFO L435 NwaCegarLoop]: 378 mSDtfsCounter, 2 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1501 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 02:33:49,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1501 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:33:49,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-28 02:33:49,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2024-11-28 02:33:49,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 234 states have (on average 1.5555555555555556) internal successors, (364), 239 states have internal predecessors, (364), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2024-11-28 02:33:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 469 transitions. [2024-11-28 02:33:49,892 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 469 transitions. Word has length 94 [2024-11-28 02:33:49,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:49,894 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 469 transitions. [2024-11-28 02:33:49,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:33:49,896 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 469 transitions. [2024-11-28 02:33:49,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 02:33:49,930 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:49,930 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:49,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:33:49,931 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:49,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:49,931 INFO L85 PathProgramCache]: Analyzing trace with hash -850341446, now seen corresponding path program 2 times [2024-11-28 02:33:49,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:49,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398111720] [2024-11-28 02:33:49,932 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:33:49,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:49,984 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:33:49,984 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:33:50,143 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 02:33:50,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:50,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398111720] [2024-11-28 02:33:50,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398111720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:50,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:50,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:33:50,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937656462] [2024-11-28 02:33:50,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:50,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:33:50,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:50,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:33:50,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:33:50,147 INFO L87 Difference]: Start difference. First operand 302 states and 469 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:33:50,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:50,246 INFO L93 Difference]: Finished difference Result 579 states and 903 transitions. [2024-11-28 02:33:50,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:33:50,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 95 [2024-11-28 02:33:50,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:50,251 INFO L225 Difference]: With dead ends: 579 [2024-11-28 02:33:50,251 INFO L226 Difference]: Without dead ends: 302 [2024-11-28 02:33:50,253 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 02:33:50,253 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 2 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:33:50,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1487 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:33:50,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-28 02:33:50,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2024-11-28 02:33:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 234 states have (on average 1.5555555555555556) internal successors, (364), 239 states have internal predecessors, (364), 50 states have call successors, (50), 15 states have call predecessors, (50), 17 states have return successors, (54), 49 states have call predecessors, (54), 49 states have call successors, (54) [2024-11-28 02:33:50,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 468 transitions. [2024-11-28 02:33:50,281 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 468 transitions. Word has length 95 [2024-11-28 02:33:50,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:50,282 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 468 transitions. [2024-11-28 02:33:50,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:33:50,282 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 468 transitions. [2024-11-28 02:33:50,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 02:33:50,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:50,285 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:50,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:33:50,285 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:50,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:50,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1946695350, now seen corresponding path program 3 times [2024-11-28 02:33:50,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:50,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665360661] [2024-11-28 02:33:50,286 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:33:50,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:50,328 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 02:33:50,329 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:33:50,512 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 02:33:50,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:50,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665360661] [2024-11-28 02:33:50,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665360661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:50,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:50,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:50,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147891606] [2024-11-28 02:33:50,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:50,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:33:50,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:50,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:33:50,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:33:50,516 INFO L87 Difference]: Start difference. First operand 302 states and 468 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:33:50,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:50,551 INFO L93 Difference]: Finished difference Result 453 states and 683 transitions. [2024-11-28 02:33:50,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:33:50,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2024-11-28 02:33:50,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:50,558 INFO L225 Difference]: With dead ends: 453 [2024-11-28 02:33:50,558 INFO L226 Difference]: Without dead ends: 351 [2024-11-28 02:33:50,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 02:33:50,560 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 279 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 517 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 02:33:50,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 517 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:33:50,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-28 02:33:50,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2024-11-28 02:33:50,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 274 states have (on average 1.5547445255474452) internal successors, (426), 279 states have internal predecessors, (426), 54 states have call successors, (54), 21 states have call predecessors, (54), 22 states have return successors, (58), 53 states have call predecessors, (58), 53 states have call successors, (58) [2024-11-28 02:33:50,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 538 transitions. [2024-11-28 02:33:50,609 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 538 transitions. Word has length 96 [2024-11-28 02:33:50,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:50,610 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 538 transitions. [2024-11-28 02:33:50,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:33:50,610 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 538 transitions. [2024-11-28 02:33:50,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 02:33:50,616 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:50,616 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:50,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:33:50,616 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:50,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:50,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1503282387, now seen corresponding path program 1 times [2024-11-28 02:33:50,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:50,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182981764] [2024-11-28 02:33:50,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:50,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-28 02:33:50,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:50,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182981764] [2024-11-28 02:33:50,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182981764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:50,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:50,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:33:50,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993357655] [2024-11-28 02:33:50,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:50,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:33:50,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:50,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:33:50,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:33:50,918 INFO L87 Difference]: Start difference. First operand 351 states and 538 transitions. Second operand has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 02:33:50,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:50,995 INFO L93 Difference]: Finished difference Result 681 states and 1049 transitions. [2024-11-28 02:33:51,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:33:51,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 150 [2024-11-28 02:33:51,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:51,031 INFO L225 Difference]: With dead ends: 681 [2024-11-28 02:33:51,031 INFO L226 Difference]: Without dead ends: 353 [2024-11-28 02:33:51,033 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 02:33:51,035 INFO L435 NwaCegarLoop]: 378 mSDtfsCounter, 1 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:33:51,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1500 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:33:51,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-11-28 02:33:51,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2024-11-28 02:33:51,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 275 states have (on average 1.5527272727272727) internal successors, (427), 281 states have internal predecessors, (427), 54 states have call successors, (54), 21 states have call predecessors, (54), 23 states have return successors, (60), 53 states have call predecessors, (60), 53 states have call successors, (60) [2024-11-28 02:33:51,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 541 transitions. [2024-11-28 02:33:51,072 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 541 transitions. Word has length 150 [2024-11-28 02:33:51,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:51,073 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 541 transitions. [2024-11-28 02:33:51,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.5) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-28 02:33:51,073 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 541 transitions. [2024-11-28 02:33:51,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-28 02:33:51,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:51,078 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:51,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:33:51,078 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:51,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:51,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1484344011, now seen corresponding path program 1 times [2024-11-28 02:33:51,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:51,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327066065] [2024-11-28 02:33:51,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:51,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 02:33:51,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:51,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327066065] [2024-11-28 02:33:51,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327066065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:51,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:51,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:33:51,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117577551] [2024-11-28 02:33:51,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:51,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:33:51,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:51,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:33:51,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:33:51,441 INFO L87 Difference]: Start difference. First operand 353 states and 541 transitions. Second operand has 8 states, 7 states have (on average 14.142857142857142) internal successors, (99), 8 states have internal predecessors, (99), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 02:33:51,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:51,682 INFO L93 Difference]: Finished difference Result 686 states and 1058 transitions. [2024-11-28 02:33:51,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:33:51,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.142857142857142) internal successors, (99), 8 states have internal predecessors, (99), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 151 [2024-11-28 02:33:51,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:51,687 INFO L225 Difference]: With dead ends: 686 [2024-11-28 02:33:51,687 INFO L226 Difference]: Without dead ends: 358 [2024-11-28 02:33:51,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:33:51,689 INFO L435 NwaCegarLoop]: 370 mSDtfsCounter, 5 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:33:51,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2561 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:33:51,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-28 02:33:51,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2024-11-28 02:33:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 279 states have (on average 1.5483870967741935) internal successors, (432), 285 states have internal predecessors, (432), 54 states have call successors, (54), 22 states have call predecessors, (54), 24 states have return successors, (65), 53 states have call predecessors, (65), 53 states have call successors, (65) [2024-11-28 02:33:51,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 551 transitions. [2024-11-28 02:33:51,716 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 551 transitions. Word has length 151 [2024-11-28 02:33:51,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:51,717 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 551 transitions. [2024-11-28 02:33:51,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.142857142857142) internal successors, (99), 8 states have internal predecessors, (99), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-28 02:33:51,717 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 551 transitions. [2024-11-28 02:33:51,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-28 02:33:51,721 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:51,721 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:51,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:33:51,721 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:51,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:51,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1742445722, now seen corresponding path program 1 times [2024-11-28 02:33:51,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:51,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579816135] [2024-11-28 02:33:51,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:51,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:51,959 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:33:51,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:51,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579816135] [2024-11-28 02:33:51,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579816135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:51,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60923232] [2024-11-28 02:33:51,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:51,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:51,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:51,963 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:51,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:33:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:52,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:33:52,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:52,501 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-28 02:33:52,501 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:33:52,697 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:33:52,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60923232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:33:52,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:33:52,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 02:33:52,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327132206] [2024-11-28 02:33:52,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:33:52,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:33:52,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:52,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:33:52,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:33:52,700 INFO L87 Difference]: Start difference. First operand 358 states and 551 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 02:33:53,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:53,003 INFO L93 Difference]: Finished difference Result 835 states and 1333 transitions. [2024-11-28 02:33:53,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:33:53,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 152 [2024-11-28 02:33:53,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:53,011 INFO L225 Difference]: With dead ends: 835 [2024-11-28 02:33:53,011 INFO L226 Difference]: Without dead ends: 679 [2024-11-28 02:33:53,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:33:53,014 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 463 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:33:53,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1829 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:33:53,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-11-28 02:33:53,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 655. [2024-11-28 02:33:53,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 512 states have (on average 1.609375) internal successors, (824), 518 states have internal predecessors, (824), 118 states have call successors, (118), 22 states have call predecessors, (118), 24 states have return successors, (139), 117 states have call predecessors, (139), 117 states have call successors, (139) [2024-11-28 02:33:53,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1081 transitions. [2024-11-28 02:33:53,083 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1081 transitions. Word has length 152 [2024-11-28 02:33:53,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:53,084 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1081 transitions. [2024-11-28 02:33:53,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 02:33:53,084 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1081 transitions. [2024-11-28 02:33:53,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-28 02:33:53,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:53,091 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:53,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:33:53,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 02:33:53,292 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:53,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:53,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2142027967, now seen corresponding path program 1 times [2024-11-28 02:33:53,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:53,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213754472] [2024-11-28 02:33:53,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:53,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:33:53,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:53,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213754472] [2024-11-28 02:33:53,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213754472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:53,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:53,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:53,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798146084] [2024-11-28 02:33:53,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:53,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:33:53,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:53,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:33:53,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:33:53,448 INFO L87 Difference]: Start difference. First operand 655 states and 1081 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:33:53,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:53,519 INFO L93 Difference]: Finished difference Result 1542 states and 2585 transitions. [2024-11-28 02:33:53,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:33:53,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 159 [2024-11-28 02:33:53,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:53,527 INFO L225 Difference]: With dead ends: 1542 [2024-11-28 02:33:53,528 INFO L226 Difference]: Without dead ends: 956 [2024-11-28 02:33:53,531 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 02:33:53,531 INFO L435 NwaCegarLoop]: 397 mSDtfsCounter, 97 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 779 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 02:33:53,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 779 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:33:53,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2024-11-28 02:33:53,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 948. [2024-11-28 02:33:53,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 741 states have (on average 1.622132253711201) internal successors, (1202), 747 states have internal predecessors, (1202), 182 states have call successors, (182), 22 states have call predecessors, (182), 24 states have return successors, (213), 181 states have call predecessors, (213), 181 states have call successors, (213) [2024-11-28 02:33:53,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1597 transitions. [2024-11-28 02:33:53,615 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1597 transitions. Word has length 159 [2024-11-28 02:33:53,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:53,615 INFO L471 AbstractCegarLoop]: Abstraction has 948 states and 1597 transitions. [2024-11-28 02:33:53,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:33:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1597 transitions. [2024-11-28 02:33:53,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 02:33:53,623 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:53,623 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:53,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:33:53,624 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:53,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:53,624 INFO L85 PathProgramCache]: Analyzing trace with hash 784534850, now seen corresponding path program 1 times [2024-11-28 02:33:53,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:53,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092447960] [2024-11-28 02:33:53,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:53,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:33:53,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:53,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092447960] [2024-11-28 02:33:53,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092447960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:53,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:53,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:53,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785973162] [2024-11-28 02:33:53,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:53,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:33:53,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:53,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:33:53,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:33:53,739 INFO L87 Difference]: Start difference. First operand 948 states and 1597 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:33:53,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:53,833 INFO L93 Difference]: Finished difference Result 2240 states and 3797 transitions. [2024-11-28 02:33:53,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:33:53,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 160 [2024-11-28 02:33:53,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:53,845 INFO L225 Difference]: With dead ends: 2240 [2024-11-28 02:33:53,845 INFO L226 Difference]: Without dead ends: 1412 [2024-11-28 02:33:53,849 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 02:33:53,850 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 95 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:33:53,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 760 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:33:53,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2024-11-28 02:33:53,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1404. [2024-11-28 02:33:53,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1102 states have (on average 1.6306715063520871) internal successors, (1797), 1108 states have internal predecessors, (1797), 277 states have call successors, (277), 22 states have call predecessors, (277), 24 states have return successors, (308), 276 states have call predecessors, (308), 276 states have call successors, (308) [2024-11-28 02:33:54,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 2382 transitions. [2024-11-28 02:33:54,005 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 2382 transitions. Word has length 160 [2024-11-28 02:33:54,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:54,006 INFO L471 AbstractCegarLoop]: Abstraction has 1404 states and 2382 transitions. [2024-11-28 02:33:54,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:33:54,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 2382 transitions. [2024-11-28 02:33:54,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-28 02:33:54,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:54,020 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:54,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:33:54,021 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:54,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:54,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1462749693, now seen corresponding path program 1 times [2024-11-28 02:33:54,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:54,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738984379] [2024-11-28 02:33:54,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:54,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:33:54,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:54,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738984379] [2024-11-28 02:33:54,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738984379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:54,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:54,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:54,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761207179] [2024-11-28 02:33:54,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:54,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:33:54,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:54,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:33:54,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:33:54,150 INFO L87 Difference]: Start difference. First operand 1404 states and 2382 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:33:54,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:54,288 INFO L93 Difference]: Finished difference Result 3259 states and 5576 transitions. [2024-11-28 02:33:54,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:33:54,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 161 [2024-11-28 02:33:54,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:54,304 INFO L225 Difference]: With dead ends: 3259 [2024-11-28 02:33:54,305 INFO L226 Difference]: Without dead ends: 2096 [2024-11-28 02:33:54,310 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 02:33:54,311 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 93 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:33:54,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 757 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:33:54,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2024-11-28 02:33:54,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 2088. [2024-11-28 02:33:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 1663 states have (on average 1.6380036079374625) internal successors, (2724), 1669 states have internal predecessors, (2724), 400 states have call successors, (400), 22 states have call predecessors, (400), 24 states have return successors, (447), 399 states have call predecessors, (447), 399 states have call successors, (447) [2024-11-28 02:33:54,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 3571 transitions. [2024-11-28 02:33:54,542 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 3571 transitions. Word has length 161 [2024-11-28 02:33:54,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:54,543 INFO L471 AbstractCegarLoop]: Abstraction has 2088 states and 3571 transitions. [2024-11-28 02:33:54,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:33:54,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 3571 transitions. [2024-11-28 02:33:54,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-28 02:33:54,564 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:54,565 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:54,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:33:54,565 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:54,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:54,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1937387679, now seen corresponding path program 1 times [2024-11-28 02:33:54,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:54,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267773643] [2024-11-28 02:33:54,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:54,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:33:54,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:54,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267773643] [2024-11-28 02:33:54,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267773643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:54,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:54,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:54,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555139473] [2024-11-28 02:33:54,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:54,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:33:54,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:54,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:33:54,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:33:54,717 INFO L87 Difference]: Start difference. First operand 2088 states and 3571 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:33:54,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:54,960 INFO L93 Difference]: Finished difference Result 4832 states and 8327 transitions. [2024-11-28 02:33:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:33:54,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 162 [2024-11-28 02:33:54,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:54,988 INFO L225 Difference]: With dead ends: 4832 [2024-11-28 02:33:54,988 INFO L226 Difference]: Without dead ends: 3182 [2024-11-28 02:33:54,997 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 02:33:54,998 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 91 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:33:54,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 757 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:33:55,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3182 states. [2024-11-28 02:33:55,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3182 to 3174. [2024-11-28 02:33:55,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3174 states, 2570 states have (on average 1.6428015564202334) internal successors, (4222), 2576 states have internal predecessors, (4222), 579 states have call successors, (579), 22 states have call predecessors, (579), 24 states have return successors, (652), 578 states have call predecessors, (652), 578 states have call successors, (652) [2024-11-28 02:33:55,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 5453 transitions. [2024-11-28 02:33:55,333 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 5453 transitions. Word has length 162 [2024-11-28 02:33:55,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:55,334 INFO L471 AbstractCegarLoop]: Abstraction has 3174 states and 5453 transitions. [2024-11-28 02:33:55,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:33:55,334 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 5453 transitions. [2024-11-28 02:33:55,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-28 02:33:55,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:55,361 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:55,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:33:55,362 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:55,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:55,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1963171615, now seen corresponding path program 1 times [2024-11-28 02:33:55,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:55,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774328286] [2024-11-28 02:33:55,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:55,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:33:55,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:55,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774328286] [2024-11-28 02:33:55,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774328286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:55,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:55,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:55,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224863892] [2024-11-28 02:33:55,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:55,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:33:55,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:55,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:33:55,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:33:55,499 INFO L87 Difference]: Start difference. First operand 3174 states and 5453 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:33:55,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:55,804 INFO L93 Difference]: Finished difference Result 7673 states and 13249 transitions. [2024-11-28 02:33:55,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:33:55,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2024-11-28 02:33:55,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:55,843 INFO L225 Difference]: With dead ends: 7673 [2024-11-28 02:33:55,843 INFO L226 Difference]: Without dead ends: 5158 [2024-11-28 02:33:55,853 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 02:33:55,854 INFO L435 NwaCegarLoop]: 401 mSDtfsCounter, 89 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 783 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 02:33:55,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 783 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:33:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5158 states. [2024-11-28 02:33:56,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5158 to 5150. [2024-11-28 02:33:56,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5150 states, 4170 states have (on average 1.635251798561151) internal successors, (6819), 4176 states have internal predecessors, (6819), 955 states have call successors, (955), 22 states have call predecessors, (955), 24 states have return successors, (1072), 954 states have call predecessors, (1072), 954 states have call successors, (1072) [2024-11-28 02:33:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5150 states to 5150 states and 8846 transitions. [2024-11-28 02:33:56,377 INFO L78 Accepts]: Start accepts. Automaton has 5150 states and 8846 transitions. Word has length 163 [2024-11-28 02:33:56,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:56,377 INFO L471 AbstractCegarLoop]: Abstraction has 5150 states and 8846 transitions. [2024-11-28 02:33:56,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:33:56,378 INFO L276 IsEmpty]: Start isEmpty. Operand 5150 states and 8846 transitions. [2024-11-28 02:33:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-28 02:33:56,421 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:56,421 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:56,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 02:33:56,422 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:56,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:56,422 INFO L85 PathProgramCache]: Analyzing trace with hash 498284669, now seen corresponding path program 1 times [2024-11-28 02:33:56,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:56,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091864111] [2024-11-28 02:33:56,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:56,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:56,550 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:33:56,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:56,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091864111] [2024-11-28 02:33:56,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091864111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:56,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:56,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:56,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499444823] [2024-11-28 02:33:56,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:56,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:33:56,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:56,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:33:56,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:33:56,555 INFO L87 Difference]: Start difference. First operand 5150 states and 8846 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:33:57,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:57,018 INFO L93 Difference]: Finished difference Result 12682 states and 21914 transitions. [2024-11-28 02:33:57,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:33:57,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2024-11-28 02:33:57,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:57,117 INFO L225 Difference]: With dead ends: 12682 [2024-11-28 02:33:57,118 INFO L226 Difference]: Without dead ends: 8552 [2024-11-28 02:33:57,140 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 02:33:57,141 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 87 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:33:57,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 760 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:33:57,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8552 states. [2024-11-28 02:33:57,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8552 to 8544. [2024-11-28 02:33:57,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8544 states, 6958 states have (on average 1.632509341764875) internal successors, (11359), 6964 states have internal predecessors, (11359), 1561 states have call successors, (1561), 22 states have call predecessors, (1561), 24 states have return successors, (1756), 1560 states have call predecessors, (1756), 1560 states have call successors, (1756) [2024-11-28 02:33:58,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8544 states to 8544 states and 14676 transitions. [2024-11-28 02:33:58,046 INFO L78 Accepts]: Start accepts. Automaton has 8544 states and 14676 transitions. Word has length 164 [2024-11-28 02:33:58,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:33:58,047 INFO L471 AbstractCegarLoop]: Abstraction has 8544 states and 14676 transitions. [2024-11-28 02:33:58,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:33:58,048 INFO L276 IsEmpty]: Start isEmpty. Operand 8544 states and 14676 transitions. [2024-11-28 02:33:58,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-28 02:33:58,113 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:33:58,113 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:58,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:33:58,113 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:33:58,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:58,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1820060735, now seen corresponding path program 1 times [2024-11-28 02:33:58,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:58,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590221160] [2024-11-28 02:33:58,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:58,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:33:58,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:58,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590221160] [2024-11-28 02:33:58,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590221160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:58,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:58,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:58,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576245085] [2024-11-28 02:33:58,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:58,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:33:58,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:58,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:33:58,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:33:58,299 INFO L87 Difference]: Start difference. First operand 8544 states and 14676 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:33:59,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:33:59,051 INFO L93 Difference]: Finished difference Result 22103 states and 38101 transitions. [2024-11-28 02:33:59,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:33:59,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 165 [2024-11-28 02:33:59,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:33:59,157 INFO L225 Difference]: With dead ends: 22103 [2024-11-28 02:33:59,157 INFO L226 Difference]: Without dead ends: 14979 [2024-11-28 02:33:59,188 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 02:33:59,189 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 85 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:33:59,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 775 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:33:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14979 states. [2024-11-28 02:34:00,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14979 to 14971. [2024-11-28 02:34:00,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14971 states, 12182 states have (on average 1.621983253981284) internal successors, (19759), 12188 states have internal predecessors, (19759), 2764 states have call successors, (2764), 22 states have call predecessors, (2764), 24 states have return successors, (3103), 2763 states have call predecessors, (3103), 2763 states have call successors, (3103) [2024-11-28 02:34:00,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14971 states to 14971 states and 25626 transitions. [2024-11-28 02:34:00,253 INFO L78 Accepts]: Start accepts. Automaton has 14971 states and 25626 transitions. Word has length 165 [2024-11-28 02:34:00,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:34:00,254 INFO L471 AbstractCegarLoop]: Abstraction has 14971 states and 25626 transitions. [2024-11-28 02:34:00,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:34:00,255 INFO L276 IsEmpty]: Start isEmpty. Operand 14971 states and 25626 transitions. [2024-11-28 02:34:00,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 02:34:00,344 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:34:00,344 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:34:00,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:34:00,345 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:34:00,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:34:00,346 INFO L85 PathProgramCache]: Analyzing trace with hash -662826244, now seen corresponding path program 1 times [2024-11-28 02:34:00,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:34:00,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090229963] [2024-11-28 02:34:00,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:34:00,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:34:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:34:00,466 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:34:00,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:34:00,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090229963] [2024-11-28 02:34:00,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090229963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:34:00,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:34:00,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:34:00,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023022686] [2024-11-28 02:34:00,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:34:00,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:34:00,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:34:00,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:34:00,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:34:00,468 INFO L87 Difference]: Start difference. First operand 14971 states and 25626 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:34:02,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:34:02,302 INFO L93 Difference]: Finished difference Result 39619 states and 68104 transitions. [2024-11-28 02:34:02,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:34:02,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 166 [2024-11-28 02:34:02,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:34:02,458 INFO L225 Difference]: With dead ends: 39619 [2024-11-28 02:34:02,458 INFO L226 Difference]: Without dead ends: 26646 [2024-11-28 02:34:02,511 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 02:34:02,512 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 83 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:34:02,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 760 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:34:02,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26646 states. [2024-11-28 02:34:03,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26646 to 26638. [2024-11-28 02:34:04,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26638 states, 21810 states have (on average 1.6168729940394315) internal successors, (35264), 21816 states have internal predecessors, (35264), 4803 states have call successors, (4803), 22 states have call predecessors, (4803), 24 states have return successors, (5416), 4802 states have call predecessors, (5416), 4802 states have call successors, (5416) [2024-11-28 02:34:04,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26638 states to 26638 states and 45483 transitions. [2024-11-28 02:34:04,374 INFO L78 Accepts]: Start accepts. Automaton has 26638 states and 45483 transitions. Word has length 166 [2024-11-28 02:34:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:34:04,374 INFO L471 AbstractCegarLoop]: Abstraction has 26638 states and 45483 transitions. [2024-11-28 02:34:04,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:34:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 26638 states and 45483 transitions. [2024-11-28 02:34:04,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-28 02:34:04,513 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:34:04,514 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:34:04,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:34:04,514 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:34:04,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:34:04,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1690680125, now seen corresponding path program 1 times [2024-11-28 02:34:04,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:34:04,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200291579] [2024-11-28 02:34:04,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:34:04,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:34:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:34:04,757 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:34:04,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:34:04,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200291579] [2024-11-28 02:34:04,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200291579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:34:04,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:34:04,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:34:04,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067151169] [2024-11-28 02:34:04,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:34:04,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:34:04,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:34:04,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:34:04,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:34:04,759 INFO L87 Difference]: Start difference. First operand 26638 states and 45483 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:34:07,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:34:07,058 INFO L93 Difference]: Finished difference Result 72571 states and 124336 transitions. [2024-11-28 02:34:07,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:34:07,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 167 [2024-11-28 02:34:07,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:34:07,331 INFO L225 Difference]: With dead ends: 72571 [2024-11-28 02:34:07,331 INFO L226 Difference]: Without dead ends: 48626 [2024-11-28 02:34:07,407 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 02:34:07,411 INFO L435 NwaCegarLoop]: 386 mSDtfsCounter, 81 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 763 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 02:34:07,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 763 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:34:07,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48626 states. [2024-11-28 02:34:10,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48626 to 48618. [2024-11-28 02:34:10,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48618 states, 40075 states have (on average 1.6103805364940735) internal successors, (64536), 40081 states have internal predecessors, (64536), 8518 states have call successors, (8518), 22 states have call predecessors, (8518), 24 states have return successors, (9663), 8517 states have call predecessors, (9663), 8517 states have call successors, (9663) [2024-11-28 02:34:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48618 states to 48618 states and 82717 transitions. [2024-11-28 02:34:10,919 INFO L78 Accepts]: Start accepts. Automaton has 48618 states and 82717 transitions. Word has length 167 [2024-11-28 02:34:10,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:34:10,920 INFO L471 AbstractCegarLoop]: Abstraction has 48618 states and 82717 transitions. [2024-11-28 02:34:10,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:34:10,921 INFO L276 IsEmpty]: Start isEmpty. Operand 48618 states and 82717 transitions. [2024-11-28 02:34:11,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-28 02:34:11,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:34:11,091 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:34:11,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:34:11,091 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:34:11,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:34:11,093 INFO L85 PathProgramCache]: Analyzing trace with hash 410796220, now seen corresponding path program 1 times [2024-11-28 02:34:11,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:34:11,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84673739] [2024-11-28 02:34:11,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:34:11,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:34:11,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:34:11,215 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:34:11,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:34:11,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84673739] [2024-11-28 02:34:11,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84673739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:34:11,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:34:11,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:34:11,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886675396] [2024-11-28 02:34:11,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:34:11,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:34:11,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:34:11,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:34:11,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:34:11,219 INFO L87 Difference]: Start difference. First operand 48618 states and 82717 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:34:15,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:34:15,135 INFO L93 Difference]: Finished difference Result 90538 states and 154379 transitions. [2024-11-28 02:34:15,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:34:15,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 168 [2024-11-28 02:34:15,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:34:15,622 INFO L225 Difference]: With dead ends: 90538 [2024-11-28 02:34:15,622 INFO L226 Difference]: Without dead ends: 90382 [2024-11-28 02:34:15,654 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 02:34:15,657 INFO L435 NwaCegarLoop]: 392 mSDtfsCounter, 76 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 774 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 02:34:15,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 774 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:34:15,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90382 states. [2024-11-28 02:34:19,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90382 to 90374. [2024-11-28 02:34:20,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90374 states, 75032 states have (on average 1.6024362938479582) internal successors, (120234), 75038 states have internal predecessors, (120234), 15317 states have call successors, (15317), 22 states have call predecessors, (15317), 24 states have return successors, (17508), 15316 states have call predecessors, (17508), 15316 states have call successors, (17508) [2024-11-28 02:34:20,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90374 states to 90374 states and 153059 transitions. [2024-11-28 02:34:20,542 INFO L78 Accepts]: Start accepts. Automaton has 90374 states and 153059 transitions. Word has length 168 [2024-11-28 02:34:20,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:34:20,543 INFO L471 AbstractCegarLoop]: Abstraction has 90374 states and 153059 transitions. [2024-11-28 02:34:20,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:34:20,545 INFO L276 IsEmpty]: Start isEmpty. Operand 90374 states and 153059 transitions. [2024-11-28 02:34:20,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-28 02:34:20,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:34:20,767 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:34:20,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 02:34:20,768 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:34:20,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:34:20,769 INFO L85 PathProgramCache]: Analyzing trace with hash 280774974, now seen corresponding path program 1 times [2024-11-28 02:34:20,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:34:20,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45336595] [2024-11-28 02:34:20,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:34:20,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:34:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:34:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 02:34:21,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:34:21,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45336595] [2024-11-28 02:34:21,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45336595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:34:21,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571833306] [2024-11-28 02:34:21,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:34:21,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:34:21,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:34:21,610 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:34:21,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5140c4d1-d340-4835-b5a9-1ba574438ae2/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:34:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:34:22,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 02:34:22,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:34:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 02:34:23,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:34:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-28 02:34:25,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571833306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:34:25,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:34:25,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 32 [2024-11-28 02:34:25,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706327611] [2024-11-28 02:34:25,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:34:25,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 02:34:25,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:34:25,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 02:34:25,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:34:25,014 INFO L87 Difference]: Start difference. First operand 90374 states and 153059 transitions. Second operand has 32 states, 32 states have (on average 9.1875) internal successors, (294), 29 states have internal predecessors, (294), 17 states have call successors, (45), 5 states have call predecessors, (45), 13 states have return successors, (45), 19 states have call predecessors, (45), 17 states have call successors, (45) [2024-11-28 02:34:33,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:34:33,374 INFO L93 Difference]: Finished difference Result 180417 states and 310964 transitions. [2024-11-28 02:34:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 02:34:33,379 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.1875) internal successors, (294), 29 states have internal predecessors, (294), 17 states have call successors, (45), 5 states have call predecessors, (45), 13 states have return successors, (45), 19 states have call predecessors, (45), 17 states have call successors, (45) Word has length 169 [2024-11-28 02:34:33,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:34:34,393 INFO L225 Difference]: With dead ends: 180417 [2024-11-28 02:34:34,393 INFO L226 Difference]: Without dead ends: 180278 [2024-11-28 02:34:34,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=434, Invalid=2218, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 02:34:34,483 INFO L435 NwaCegarLoop]: 621 mSDtfsCounter, 2454 mSDsluCounter, 6339 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2457 SdHoareTripleChecker+Valid, 6960 SdHoareTripleChecker+Invalid, 2359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:34:34,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2457 Valid, 6960 Invalid, 2359 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [564 Valid, 1795 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 02:34:34,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180278 states.