./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/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_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/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_8d86f174-536a-4022-92c2-ef0bfa4334df/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 25d1aac916acb353bef6b5512adabc0f3abdf00fe5619505211974e4efa18990 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:52:35,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:52:36,059 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:52:36,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:52:36,064 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:52:36,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:52:36,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:52:36,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:52:36,089 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:52:36,089 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:52:36,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:52:36,089 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:52:36,090 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:52:36,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:52:36,090 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:52:36,090 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:52:36,090 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:52:36,091 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:52:36,091 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:52:36,091 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:52:36,091 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:52:36,091 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:52:36,091 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:52:36,092 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:52:36,092 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:52:36,092 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:52:36,092 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:52:36,092 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:52:36,092 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:52:36,092 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:52:36,093 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:52:36,093 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:52:36,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:52:36,093 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:52:36,093 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:52:36,093 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:52:36,093 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:52:36,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:52:36,094 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:52:36,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:52:36,094 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:52:36,094 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:52:36,094 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:52:36,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:52:36,095 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:52:36,095 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:52:36,095 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:52:36,095 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:52:36,095 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_8d86f174-536a-4022-92c2-ef0bfa4334df/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 -> 25d1aac916acb353bef6b5512adabc0f3abdf00fe5619505211974e4efa18990 [2024-11-28 04:52:36,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:52:36,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:52:36,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:52:36,382 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:52:36,382 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:52:36,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/email_spec11_product22.cil.c [2024-11-28 04:52:39,436 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/data/177317a69/0073cb3e590947abab77af47c76c6753/FLAGe3611d38b [2024-11-28 04:52:39,850 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:52:39,851 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/sv-benchmarks/c/product-lines/email_spec11_product22.cil.c [2024-11-28 04:52:39,882 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/data/177317a69/0073cb3e590947abab77af47c76c6753/FLAGe3611d38b [2024-11-28 04:52:39,904 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/data/177317a69/0073cb3e590947abab77af47c76c6753 [2024-11-28 04:52:39,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:52:39,909 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:52:39,912 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:52:39,913 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:52:39,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:52:39,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:52:39" (1/1) ... [2024-11-28 04:52:39,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545c5485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:39, skipping insertion in model container [2024-11-28 04:52:39,921 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:52:39" (1/1) ... [2024-11-28 04:52:39,996 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:52:40,488 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_8d86f174-536a-4022-92c2-ef0bfa4334df/sv-benchmarks/c/product-lines/email_spec11_product22.cil.c[40875,40888] [2024-11-28 04:52:40,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:52:40,631 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:52:40,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [48] [2024-11-28 04:52:40,647 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"DecryptAutoResponder_spec.i","") [66] [2024-11-28 04:52:40,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [99] [2024-11-28 04:52:40,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [210] [2024-11-28 04:52:40,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [520] [2024-11-28 04:52:40,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [749] [2024-11-28 04:52:40,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1822] [2024-11-28 04:52:40,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1831] [2024-11-28 04:52:40,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2119] [2024-11-28 04:52:40,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2485] [2024-11-28 04:52:40,651 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [2520] [2024-11-28 04:52:40,750 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_8d86f174-536a-4022-92c2-ef0bfa4334df/sv-benchmarks/c/product-lines/email_spec11_product22.cil.c[40875,40888] [2024-11-28 04:52:40,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:52:40,884 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:52:40,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:40 WrapperNode [2024-11-28 04:52:40,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:52:40,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:52:40,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:52:40,890 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:52:40,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:40" (1/1) ... [2024-11-28 04:52:40,925 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:40" (1/1) ... [2024-11-28 04:52:40,997 INFO L138 Inliner]: procedures = 128, calls = 189, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 1017 [2024-11-28 04:52:41,003 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:52:41,004 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:52:41,004 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:52:41,004 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:52:41,021 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:40" (1/1) ... [2024-11-28 04:52:41,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:40" (1/1) ... [2024-11-28 04:52:41,031 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:40" (1/1) ... [2024-11-28 04:52:41,063 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-11-28 04:52:41,063 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:40" (1/1) ... [2024-11-28 04:52:41,063 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:40" (1/1) ... [2024-11-28 04:52:41,086 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:40" (1/1) ... [2024-11-28 04:52:41,088 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:40" (1/1) ... [2024-11-28 04:52:41,105 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:40" (1/1) ... [2024-11-28 04:52:41,109 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:40" (1/1) ... [2024-11-28 04:52:41,112 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:40" (1/1) ... [2024-11-28 04:52:41,125 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:52:41,126 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:52:41,126 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:52:41,126 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:52:41,130 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:40" (1/1) ... [2024-11-28 04:52:41,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:52:41,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:41,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:52:41,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:52:41,238 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-11-28 04:52:41,239 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-11-28 04:52:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-11-28 04:52:41,239 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-11-28 04:52:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-11-28 04:52:41,239 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-11-28 04:52:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-11-28 04:52:41,239 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-11-28 04:52:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-11-28 04:52:41,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-11-28 04:52:41,239 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-11-28 04:52:41,239 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-11-28 04:52:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-11-28 04:52:41,240 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-11-28 04:52:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-11-28 04:52:41,240 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-11-28 04:52:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-11-28 04:52:41,240 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-11-28 04:52:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2024-11-28 04:52:41,240 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2024-11-28 04:52:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-11-28 04:52:41,240 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-11-28 04:52:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:52:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-11-28 04:52:41,240 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-11-28 04:52:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-11-28 04:52:41,240 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-11-28 04:52:41,240 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-11-28 04:52:41,240 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-11-28 04:52:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-11-28 04:52:41,241 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-11-28 04:52:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-11-28 04:52:41,241 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-11-28 04:52:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-11-28 04:52:41,241 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-11-28 04:52:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-11-28 04:52:41,241 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-11-28 04:52:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:52:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:52:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:52:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:52:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-11-28 04:52:41,241 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-11-28 04:52:41,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:52:41,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:52:41,509 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:52:41,512 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:52:42,612 INFO L? ?]: Removed 433 outVars from TransFormulas that were not future-live. [2024-11-28 04:52:42,613 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:52:42,629 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:52:42,629 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:52:42,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:52:42 BoogieIcfgContainer [2024-11-28 04:52:42,630 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:52:42,632 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:52:42,632 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:52:42,637 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:52:42,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:52:39" (1/3) ... [2024-11-28 04:52:42,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f90acf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:52:42, skipping insertion in model container [2024-11-28 04:52:42,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:40" (2/3) ... [2024-11-28 04:52:42,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f90acf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:52:42, skipping insertion in model container [2024-11-28 04:52:42,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:52:42" (3/3) ... [2024-11-28 04:52:42,640 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec11_product22.cil.c [2024-11-28 04:52:42,653 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:52:42,655 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec11_product22.cil.c that has 20 procedures, 321 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:52:42,725 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:52:42,741 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;@3b99833c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:52:42,742 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:52:42,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 321 states, 250 states have (on average 1.528) internal successors, (382), 254 states have internal predecessors, (382), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-28 04:52:42,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-28 04:52:42,772 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:42,773 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:42,774 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:42,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:42,781 INFO L85 PathProgramCache]: Analyzing trace with hash 829098796, now seen corresponding path program 1 times [2024-11-28 04:52:42,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:42,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715375510] [2024-11-28 04:52:42,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:42,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 04:52:43,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:43,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715375510] [2024-11-28 04:52:43,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715375510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:43,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715733459] [2024-11-28 04:52:43,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:43,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:43,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:43,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:43,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:52:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:44,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:52:44,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 04:52:44,296 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:52:44,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715733459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:44,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:52:44,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-11-28 04:52:44,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307543493] [2024-11-28 04:52:44,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:44,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:52:44,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:44,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:52:44,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:52:44,328 INFO L87 Difference]: Start difference. First operand has 321 states, 250 states have (on average 1.528) internal successors, (382), 254 states have internal predecessors, (382), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:44,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:44,378 INFO L93 Difference]: Finished difference Result 484 states and 711 transitions. [2024-11-28 04:52:44,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:52:44,380 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2024-11-28 04:52:44,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:44,391 INFO L225 Difference]: With dead ends: 484 [2024-11-28 04:52:44,391 INFO L226 Difference]: Without dead ends: 314 [2024-11-28 04:52:44,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:52:44,398 INFO L435 NwaCegarLoop]: 478 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, 478 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:44,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:52:44,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-28 04:52:44,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2024-11-28 04:52:44,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 244 states have (on average 1.5204918032786885) internal successors, (371), 247 states have internal predecessors, (371), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-28 04:52:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 470 transitions. [2024-11-28 04:52:44,473 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 470 transitions. Word has length 109 [2024-11-28 04:52:44,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:44,475 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 470 transitions. [2024-11-28 04:52:44,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:44,475 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 470 transitions. [2024-11-28 04:52:44,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-28 04:52:44,481 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:44,481 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:44,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:52:44,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:52:44,686 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:44,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:44,687 INFO L85 PathProgramCache]: Analyzing trace with hash -312969574, now seen corresponding path program 1 times [2024-11-28 04:52:44,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:44,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188482061] [2024-11-28 04:52:44,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:44,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:45,068 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 04:52:45,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:45,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188482061] [2024-11-28 04:52:45,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188482061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:45,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540820636] [2024-11-28 04:52:45,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:45,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:45,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:45,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:45,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:52:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:45,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:52:45,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 04:52:45,516 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:52:45,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540820636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:45,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:52:45,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 04:52:45,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319207785] [2024-11-28 04:52:45,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:45,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:45,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:45,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:45,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:52:45,521 INFO L87 Difference]: Start difference. First operand 314 states and 470 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:45,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:45,589 INFO L93 Difference]: Finished difference Result 473 states and 691 transitions. [2024-11-28 04:52:45,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:45,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2024-11-28 04:52:45,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:45,593 INFO L225 Difference]: With dead ends: 473 [2024-11-28 04:52:45,597 INFO L226 Difference]: Without dead ends: 316 [2024-11-28 04:52:45,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:52:45,599 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 1 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:45,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 934 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:52:45,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-28 04:52:45,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2024-11-28 04:52:45,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 245 states have (on average 1.5183673469387755) internal successors, (372), 248 states have internal predecessors, (372), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-11-28 04:52:45,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 471 transitions. [2024-11-28 04:52:45,638 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 471 transitions. Word has length 109 [2024-11-28 04:52:45,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:45,640 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 471 transitions. [2024-11-28 04:52:45,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:45,640 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 471 transitions. [2024-11-28 04:52:45,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 04:52:45,646 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:45,647 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:45,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:52:45,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:45,848 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:45,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:45,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1423915097, now seen corresponding path program 1 times [2024-11-28 04:52:45,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:45,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597371313] [2024-11-28 04:52:45,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:45,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 04:52:46,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:46,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597371313] [2024-11-28 04:52:46,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597371313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:46,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97262429] [2024-11-28 04:52:46,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:46,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:46,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:46,251 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:46,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:52:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:46,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 1045 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:52:46,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 04:52:46,683 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:52:46,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97262429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:46,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:52:46,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 04:52:46,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098154573] [2024-11-28 04:52:46,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:46,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:46,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:46,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:46,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:52:46,687 INFO L87 Difference]: Start difference. First operand 315 states and 471 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:46,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:46,742 INFO L93 Difference]: Finished difference Result 665 states and 1009 transitions. [2024-11-28 04:52:46,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:46,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2024-11-28 04:52:46,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:46,758 INFO L225 Difference]: With dead ends: 665 [2024-11-28 04:52:46,758 INFO L226 Difference]: Without dead ends: 376 [2024-11-28 04:52:46,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:52:46,763 INFO L435 NwaCegarLoop]: 476 mSDtfsCounter, 115 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:46,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 899 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:52:46,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-28 04:52:46,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 368. [2024-11-28 04:52:46,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 287 states have (on average 1.5365853658536586) internal successors, (441), 290 states have internal predecessors, (441), 61 states have call successors, (61), 19 states have call predecessors, (61), 19 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 04:52:46,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 562 transitions. [2024-11-28 04:52:46,806 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 562 transitions. Word has length 117 [2024-11-28 04:52:46,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:46,807 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 562 transitions. [2024-11-28 04:52:46,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:46,808 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 562 transitions. [2024-11-28 04:52:46,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-28 04:52:46,812 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:46,813 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:46,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:52:47,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:47,013 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:47,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:47,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1717134722, now seen corresponding path program 1 times [2024-11-28 04:52:47,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:47,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300324067] [2024-11-28 04:52:47,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:47,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 04:52:47,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:47,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300324067] [2024-11-28 04:52:47,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300324067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:47,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315191539] [2024-11-28 04:52:47,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:47,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:47,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:47,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:47,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:52:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:47,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:52:47,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:52:47,750 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:52:47,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315191539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:47,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:52:47,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-28 04:52:47,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262415635] [2024-11-28 04:52:47,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:47,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:52:47,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:47,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:52:47,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:52:47,757 INFO L87 Difference]: Start difference. First operand 368 states and 562 transitions. Second operand has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:52:47,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:47,865 INFO L93 Difference]: Finished difference Result 727 states and 1114 transitions. [2024-11-28 04:52:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:52:47,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 118 [2024-11-28 04:52:47,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:47,869 INFO L225 Difference]: With dead ends: 727 [2024-11-28 04:52:47,869 INFO L226 Difference]: Without dead ends: 370 [2024-11-28 04:52:47,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:52:47,874 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 2 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:47,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1837 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:52:47,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-28 04:52:47,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2024-11-28 04:52:47,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 288 states have (on average 1.5347222222222223) internal successors, (442), 292 states have internal predecessors, (442), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (62), 60 states have call predecessors, (62), 60 states have call successors, (62) [2024-11-28 04:52:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 565 transitions. [2024-11-28 04:52:47,914 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 565 transitions. Word has length 118 [2024-11-28 04:52:47,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:47,915 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 565 transitions. [2024-11-28 04:52:47,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:52:47,915 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 565 transitions. [2024-11-28 04:52:47,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-28 04:52:47,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:47,920 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:47,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:52:48,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-28 04:52:48,121 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:48,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:48,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1383164635, now seen corresponding path program 1 times [2024-11-28 04:52:48,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:48,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708215297] [2024-11-28 04:52:48,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:48,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 04:52:48,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:48,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708215297] [2024-11-28 04:52:48,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708215297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:48,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154987274] [2024-11-28 04:52:48,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:48,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:48,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:48,398 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:48,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:52:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:48,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:52:48,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:48,847 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:52:48,848 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:52:48,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154987274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:48,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:52:48,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-11-28 04:52:48,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680117823] [2024-11-28 04:52:48,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:48,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:52:48,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:48,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:52:48,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:52:48,851 INFO L87 Difference]: Start difference. First operand 370 states and 565 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:52:48,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:48,939 INFO L93 Difference]: Finished difference Result 729 states and 1119 transitions. [2024-11-28 04:52:48,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:52:48,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2024-11-28 04:52:48,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:48,943 INFO L225 Difference]: With dead ends: 729 [2024-11-28 04:52:48,944 INFO L226 Difference]: Without dead ends: 372 [2024-11-28 04:52:48,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:52:48,946 INFO L435 NwaCegarLoop]: 460 mSDtfsCounter, 2 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:48,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1823 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:52:48,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-28 04:52:48,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2024-11-28 04:52:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 289 states have (on average 1.532871972318339) internal successors, (443), 294 states have internal predecessors, (443), 61 states have call successors, (61), 19 states have call predecessors, (61), 21 states have return successors, (67), 60 states have call predecessors, (67), 60 states have call successors, (67) [2024-11-28 04:52:48,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 571 transitions. [2024-11-28 04:52:48,967 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 571 transitions. Word has length 119 [2024-11-28 04:52:48,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:48,968 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 571 transitions. [2024-11-28 04:52:48,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:52:48,968 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 571 transitions. [2024-11-28 04:52:48,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-28 04:52:48,971 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:48,971 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 04:52:48,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:52:49,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:49,172 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:49,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:49,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1426335679, now seen corresponding path program 1 times [2024-11-28 04:52:49,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:49,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887772845] [2024-11-28 04:52:49,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:49,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:49,405 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 04:52:49,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:49,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887772845] [2024-11-28 04:52:49,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887772845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:49,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:49,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:52:49,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034254342] [2024-11-28 04:52:49,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:49,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:52:49,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:49,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:52:49,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:52:49,407 INFO L87 Difference]: Start difference. First operand 372 states and 571 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:52:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:49,473 INFO L93 Difference]: Finished difference Result 721 states and 1110 transitions. [2024-11-28 04:52:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:52:49,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2024-11-28 04:52:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:49,479 INFO L225 Difference]: With dead ends: 721 [2024-11-28 04:52:49,479 INFO L226 Difference]: Without dead ends: 372 [2024-11-28 04:52:49,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:52:49,482 INFO L435 NwaCegarLoop]: 463 mSDtfsCounter, 2 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:49,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1841 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:52:49,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-28 04:52:49,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2024-11-28 04:52:49,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 289 states have (on average 1.532871972318339) internal successors, (443), 294 states have internal predecessors, (443), 61 states have call successors, (61), 19 states have call predecessors, (61), 21 states have return successors, (66), 60 states have call predecessors, (66), 60 states have call successors, (66) [2024-11-28 04:52:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 570 transitions. [2024-11-28 04:52:49,521 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 570 transitions. Word has length 120 [2024-11-28 04:52:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:49,521 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 570 transitions. [2024-11-28 04:52:49,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:52:49,522 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 570 transitions. [2024-11-28 04:52:49,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-28 04:52:49,527 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:49,527 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 04:52:49,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:52:49,528 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:49,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:49,531 INFO L85 PathProgramCache]: Analyzing trace with hash 540331850, now seen corresponding path program 2 times [2024-11-28 04:52:49,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:49,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602367949] [2024-11-28 04:52:49,532 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:52:49,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:49,574 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:52:49,574 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:52:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 04:52:49,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:49,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602367949] [2024-11-28 04:52:49,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602367949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:49,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:49,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:52:49,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748279645] [2024-11-28 04:52:49,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:49,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:52:49,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:49,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:52:49,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:52:49,726 INFO L87 Difference]: Start difference. First operand 372 states and 570 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:52:50,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:50,234 INFO L93 Difference]: Finished difference Result 829 states and 1279 transitions. [2024-11-28 04:52:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:52:50,235 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2024-11-28 04:52:50,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:50,240 INFO L225 Difference]: With dead ends: 829 [2024-11-28 04:52:50,241 INFO L226 Difference]: Without dead ends: 680 [2024-11-28 04:52:50,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:52:50,242 INFO L435 NwaCegarLoop]: 501 mSDtfsCounter, 505 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:50,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 2692 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:52:50,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-11-28 04:52:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 623. [2024-11-28 04:52:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 491 states have (on average 1.5743380855397149) internal successors, (773), 497 states have internal predecessors, (773), 98 states have call successors, (98), 33 states have call predecessors, (98), 33 states have return successors, (110), 95 states have call predecessors, (110), 97 states have call successors, (110) [2024-11-28 04:52:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 981 transitions. [2024-11-28 04:52:50,304 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 981 transitions. Word has length 121 [2024-11-28 04:52:50,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:50,305 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 981 transitions. [2024-11-28 04:52:50,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:52:50,306 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 981 transitions. [2024-11-28 04:52:50,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 04:52:50,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:50,311 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 04:52:50,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:52:50,311 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:50,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:50,312 INFO L85 PathProgramCache]: Analyzing trace with hash -237525943, now seen corresponding path program 1 times [2024-11-28 04:52:50,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:50,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162817934] [2024-11-28 04:52:50,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:50,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:50,509 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 04:52:50,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:50,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162817934] [2024-11-28 04:52:50,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162817934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:50,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:50,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:52:50,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615000940] [2024-11-28 04:52:50,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:50,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:52:50,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:50,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:52:50,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:52:50,511 INFO L87 Difference]: Start difference. First operand 623 states and 981 transitions. Second operand has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:52:50,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:50,602 INFO L93 Difference]: Finished difference Result 1225 states and 1935 transitions. [2024-11-28 04:52:50,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:52:50,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2024-11-28 04:52:50,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:50,611 INFO L225 Difference]: With dead ends: 1225 [2024-11-28 04:52:50,611 INFO L226 Difference]: Without dead ends: 625 [2024-11-28 04:52:50,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:52:50,614 INFO L435 NwaCegarLoop]: 464 mSDtfsCounter, 1 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:50,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1844 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:52:50,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2024-11-28 04:52:50,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 625. [2024-11-28 04:52:50,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 492 states have (on average 1.5731707317073171) internal successors, (774), 499 states have internal predecessors, (774), 98 states have call successors, (98), 33 states have call predecessors, (98), 34 states have return successors, (112), 95 states have call predecessors, (112), 97 states have call successors, (112) [2024-11-28 04:52:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 984 transitions. [2024-11-28 04:52:50,661 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 984 transitions. Word has length 122 [2024-11-28 04:52:50,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:50,662 INFO L471 AbstractCegarLoop]: Abstraction has 625 states and 984 transitions. [2024-11-28 04:52:50,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-28 04:52:50,663 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 984 transitions. [2024-11-28 04:52:50,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 04:52:50,667 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:50,668 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 04:52:50,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:52:50,668 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:50,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:50,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1143162755, now seen corresponding path program 1 times [2024-11-28 04:52:50,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:50,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024565441] [2024-11-28 04:52:50,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:50,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 04:52:50,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:50,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024565441] [2024-11-28 04:52:50,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024565441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:50,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:50,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:52:50,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919144747] [2024-11-28 04:52:50,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:50,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:52:50,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:50,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:52:50,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:52:50,925 INFO L87 Difference]: Start difference. First operand 625 states and 984 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-28 04:52:51,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:51,128 INFO L93 Difference]: Finished difference Result 1032 states and 1608 transitions. [2024-11-28 04:52:51,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:52:51,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 124 [2024-11-28 04:52:51,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:51,137 INFO L225 Difference]: With dead ends: 1032 [2024-11-28 04:52:51,137 INFO L226 Difference]: Without dead ends: 634 [2024-11-28 04:52:51,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:52:51,140 INFO L435 NwaCegarLoop]: 454 mSDtfsCounter, 5 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:51,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3149 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:52:51,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-11-28 04:52:51,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 630. [2024-11-28 04:52:51,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 496 states have (on average 1.5705645161290323) internal successors, (779), 503 states have internal predecessors, (779), 98 states have call successors, (98), 34 states have call predecessors, (98), 35 states have return successors, (117), 95 states have call predecessors, (117), 97 states have call successors, (117) [2024-11-28 04:52:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 994 transitions. [2024-11-28 04:52:51,183 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 994 transitions. Word has length 124 [2024-11-28 04:52:51,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:51,183 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 994 transitions. [2024-11-28 04:52:51,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-28 04:52:51,184 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 994 transitions. [2024-11-28 04:52:51,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 04:52:51,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:51,188 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 04:52:51,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:52:51,188 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:51,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:51,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1493018140, now seen corresponding path program 1 times [2024-11-28 04:52:51,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:51,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729199838] [2024-11-28 04:52:51,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:51,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:51,433 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 04:52:51,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:51,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729199838] [2024-11-28 04:52:51,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729199838] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:52:51,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228312887] [2024-11-28 04:52:51,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:51,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:52:51,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:52:51,438 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:52:51,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:52:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:51,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:52:51,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:52:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 04:52:51,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:52:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 04:52:51,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228312887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:52:51,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:52:51,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2024-11-28 04:52:51,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147505911] [2024-11-28 04:52:51,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:52:51,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:52:51,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:51,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:52:51,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:52:51,985 INFO L87 Difference]: Start difference. First operand 630 states and 994 transitions. Second operand has 11 states, 10 states have (on average 12.8) internal successors, (128), 11 states have internal predecessors, (128), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-28 04:52:52,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:52,828 INFO L93 Difference]: Finished difference Result 1952 states and 3215 transitions. [2024-11-28 04:52:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:52:52,829 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.8) internal successors, (128), 11 states have internal predecessors, (128), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 125 [2024-11-28 04:52:52,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:52,838 INFO L225 Difference]: With dead ends: 1952 [2024-11-28 04:52:52,838 INFO L226 Difference]: Without dead ends: 1356 [2024-11-28 04:52:52,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:52:52,842 INFO L435 NwaCegarLoop]: 454 mSDtfsCounter, 1193 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 3289 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:52,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 3289 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:52:52,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2024-11-28 04:52:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1326. [2024-11-28 04:52:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1064 states have (on average 1.6080827067669172) internal successors, (1711), 1070 states have internal predecessors, (1711), 226 states have call successors, (226), 35 states have call predecessors, (226), 35 states have return successors, (270), 223 states have call predecessors, (270), 225 states have call successors, (270) [2024-11-28 04:52:52,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 2207 transitions. [2024-11-28 04:52:52,936 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 2207 transitions. Word has length 125 [2024-11-28 04:52:52,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:52,937 INFO L471 AbstractCegarLoop]: Abstraction has 1326 states and 2207 transitions. [2024-11-28 04:52:52,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.8) internal successors, (128), 11 states have internal predecessors, (128), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-28 04:52:52,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 2207 transitions. [2024-11-28 04:52:52,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 04:52:52,946 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:52,946 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 04:52:52,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:52:53,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:52:53,147 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:53,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:53,147 INFO L85 PathProgramCache]: Analyzing trace with hash -258789597, now seen corresponding path program 1 times [2024-11-28 04:52:53,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:53,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35833417] [2024-11-28 04:52:53,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:53,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 04:52:53,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:53,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35833417] [2024-11-28 04:52:53,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35833417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:53,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:53,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:53,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784670549] [2024-11-28 04:52:53,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:53,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:53,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:53,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:53,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:53,235 INFO L87 Difference]: Start difference. First operand 1326 states and 2207 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:53,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:53,372 INFO L93 Difference]: Finished difference Result 3168 states and 5351 transitions. [2024-11-28 04:52:53,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:53,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2024-11-28 04:52:53,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:53,392 INFO L225 Difference]: With dead ends: 3168 [2024-11-28 04:52:53,392 INFO L226 Difference]: Without dead ends: 1972 [2024-11-28 04:52:53,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:53,399 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 112 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:53,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 941 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:52:53,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2024-11-28 04:52:53,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1962. [2024-11-28 04:52:53,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1572 states have (on average 1.6202290076335877) internal successors, (2547), 1578 states have internal predecessors, (2547), 354 states have call successors, (354), 35 states have call predecessors, (354), 35 states have return successors, (423), 351 states have call predecessors, (423), 353 states have call successors, (423) [2024-11-28 04:52:53,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 3324 transitions. [2024-11-28 04:52:53,539 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 3324 transitions. Word has length 129 [2024-11-28 04:52:53,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:53,540 INFO L471 AbstractCegarLoop]: Abstraction has 1962 states and 3324 transitions. [2024-11-28 04:52:53,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:53,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 3324 transitions. [2024-11-28 04:52:53,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 04:52:53,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:53,554 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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 04:52:53,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:52:53,554 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:53,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:53,555 INFO L85 PathProgramCache]: Analyzing trace with hash -832430770, now seen corresponding path program 1 times [2024-11-28 04:52:53,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:53,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472687608] [2024-11-28 04:52:53,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:53,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 04:52:53,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:53,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472687608] [2024-11-28 04:52:53,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472687608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:53,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:53,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:52:53,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294713948] [2024-11-28 04:52:53,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:53,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:52:53,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:53,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:52:53,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:52:53,773 INFO L87 Difference]: Start difference. First operand 1962 states and 3324 transitions. Second operand has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-28 04:52:54,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:54,025 INFO L93 Difference]: Finished difference Result 2783 states and 4660 transitions. [2024-11-28 04:52:54,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:52:54,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 128 [2024-11-28 04:52:54,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:54,036 INFO L225 Difference]: With dead ends: 2783 [2024-11-28 04:52:54,036 INFO L226 Difference]: Without dead ends: 1095 [2024-11-28 04:52:54,043 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 04:52:54,044 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 7 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:54,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3142 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:52:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2024-11-28 04:52:54,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1095. [2024-11-28 04:52:54,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 873 states have (on average 1.5990836197021765) internal successors, (1396), 879 states have internal predecessors, (1396), 193 states have call successors, (193), 27 states have call predecessors, (193), 28 states have return successors, (224), 191 states have call predecessors, (224), 192 states have call successors, (224) [2024-11-28 04:52:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1813 transitions. [2024-11-28 04:52:54,138 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1813 transitions. Word has length 128 [2024-11-28 04:52:54,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:54,139 INFO L471 AbstractCegarLoop]: Abstraction has 1095 states and 1813 transitions. [2024-11-28 04:52:54,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-28 04:52:54,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1813 transitions. [2024-11-28 04:52:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-28 04:52:54,146 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:54,147 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:54,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:52:54,147 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:54,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:54,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1797569961, now seen corresponding path program 1 times [2024-11-28 04:52:54,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:54,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098055726] [2024-11-28 04:52:54,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:54,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 04:52:54,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:54,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098055726] [2024-11-28 04:52:54,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098055726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:54,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:54,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:54,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055502546] [2024-11-28 04:52:54,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:54,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:54,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:54,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:54,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:54,234 INFO L87 Difference]: Start difference. First operand 1095 states and 1813 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:54,317 INFO L93 Difference]: Finished difference Result 2587 states and 4313 transitions. [2024-11-28 04:52:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:54,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2024-11-28 04:52:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:54,329 INFO L225 Difference]: With dead ends: 2587 [2024-11-28 04:52:54,329 INFO L226 Difference]: Without dead ends: 1624 [2024-11-28 04:52:54,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:54,334 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 110 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:54,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 930 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:52:54,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2024-11-28 04:52:54,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1616. [2024-11-28 04:52:54,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1299 states have (on average 1.6089299461123943) internal successors, (2090), 1305 states have internal predecessors, (2090), 288 states have call successors, (288), 27 states have call predecessors, (288), 28 states have return successors, (319), 286 states have call predecessors, (319), 287 states have call successors, (319) [2024-11-28 04:52:54,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2697 transitions. [2024-11-28 04:52:54,471 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2697 transitions. Word has length 130 [2024-11-28 04:52:54,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:54,472 INFO L471 AbstractCegarLoop]: Abstraction has 1616 states and 2697 transitions. [2024-11-28 04:52:54,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:54,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2697 transitions. [2024-11-28 04:52:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 04:52:54,483 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:54,483 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:54,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:52:54,484 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:54,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:54,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1930259627, now seen corresponding path program 1 times [2024-11-28 04:52:54,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:54,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869063487] [2024-11-28 04:52:54,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:54,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 04:52:54,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:54,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869063487] [2024-11-28 04:52:54,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869063487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:54,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:54,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:54,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892308584] [2024-11-28 04:52:54,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:54,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:54,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:54,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:54,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:54,563 INFO L87 Difference]: Start difference. First operand 1616 states and 2697 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:54,681 INFO L93 Difference]: Finished difference Result 3766 states and 6337 transitions. [2024-11-28 04:52:54,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:54,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2024-11-28 04:52:54,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:54,698 INFO L225 Difference]: With dead ends: 3766 [2024-11-28 04:52:54,698 INFO L226 Difference]: Without dead ends: 2413 [2024-11-28 04:52:54,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:54,704 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 108 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:54,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 927 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:52:54,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2024-11-28 04:52:54,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2405. [2024-11-28 04:52:54,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 1965 states have (on average 1.616793893129771) internal successors, (3177), 1971 states have internal predecessors, (3177), 411 states have call successors, (411), 27 states have call predecessors, (411), 28 states have return successors, (458), 409 states have call predecessors, (458), 410 states have call successors, (458) [2024-11-28 04:52:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 4046 transitions. [2024-11-28 04:52:54,895 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 4046 transitions. Word has length 131 [2024-11-28 04:52:54,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:54,895 INFO L471 AbstractCegarLoop]: Abstraction has 2405 states and 4046 transitions. [2024-11-28 04:52:54,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:54,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 4046 transitions. [2024-11-28 04:52:54,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-28 04:52:54,911 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:54,911 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:54,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:52:54,911 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:54,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:54,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1773230552, now seen corresponding path program 1 times [2024-11-28 04:52:54,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:54,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20281767] [2024-11-28 04:52:54,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:54,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 04:52:54,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:54,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20281767] [2024-11-28 04:52:54,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20281767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:54,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:54,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:54,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562471951] [2024-11-28 04:52:54,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:54,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:54,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:54,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:54,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:54,996 INFO L87 Difference]: Start difference. First operand 2405 states and 4046 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:55,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:55,168 INFO L93 Difference]: Finished difference Result 5604 states and 9494 transitions. [2024-11-28 04:52:55,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:55,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2024-11-28 04:52:55,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:55,195 INFO L225 Difference]: With dead ends: 5604 [2024-11-28 04:52:55,195 INFO L226 Difference]: Without dead ends: 3674 [2024-11-28 04:52:55,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:55,204 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 106 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:55,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 927 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:52:55,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2024-11-28 04:52:55,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3666. [2024-11-28 04:52:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3047 states have (on average 1.6219232031506399) internal successors, (4942), 3053 states have internal predecessors, (4942), 590 states have call successors, (590), 27 states have call predecessors, (590), 28 states have return successors, (663), 588 states have call predecessors, (663), 589 states have call successors, (663) [2024-11-28 04:52:55,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6195 transitions. [2024-11-28 04:52:55,489 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6195 transitions. Word has length 132 [2024-11-28 04:52:55,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:55,490 INFO L471 AbstractCegarLoop]: Abstraction has 3666 states and 6195 transitions. [2024-11-28 04:52:55,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:55,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6195 transitions. [2024-11-28 04:52:55,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-28 04:52:55,509 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:55,509 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:55,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:52:55,509 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:55,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:55,510 INFO L85 PathProgramCache]: Analyzing trace with hash -269590759, now seen corresponding path program 1 times [2024-11-28 04:52:55,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:55,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706917204] [2024-11-28 04:52:55,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:55,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 04:52:55,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:55,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706917204] [2024-11-28 04:52:55,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706917204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:55,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:55,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:55,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477799232] [2024-11-28 04:52:55,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:55,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:55,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:55,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:55,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:55,598 INFO L87 Difference]: Start difference. First operand 3666 states and 6195 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:55,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:55,916 INFO L93 Difference]: Finished difference Result 8630 states and 14681 transitions. [2024-11-28 04:52:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:55,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2024-11-28 04:52:55,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:55,965 INFO L225 Difference]: With dead ends: 8630 [2024-11-28 04:52:55,965 INFO L226 Difference]: Without dead ends: 5760 [2024-11-28 04:52:55,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:55,978 INFO L435 NwaCegarLoop]: 474 mSDtfsCounter, 104 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:55,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 930 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:52:55,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5760 states. [2024-11-28 04:52:56,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5760 to 5752. [2024-11-28 04:52:56,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5752 states, 4757 states have (on average 1.6171957115829305) internal successors, (7693), 4763 states have internal predecessors, (7693), 966 states have call successors, (966), 27 states have call predecessors, (966), 28 states have return successors, (1083), 964 states have call predecessors, (1083), 965 states have call successors, (1083) [2024-11-28 04:52:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5752 states to 5752 states and 9742 transitions. [2024-11-28 04:52:56,472 INFO L78 Accepts]: Start accepts. Automaton has 5752 states and 9742 transitions. Word has length 133 [2024-11-28 04:52:56,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:56,473 INFO L471 AbstractCegarLoop]: Abstraction has 5752 states and 9742 transitions. [2024-11-28 04:52:56,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:56,474 INFO L276 IsEmpty]: Start isEmpty. Operand 5752 states and 9742 transitions. [2024-11-28 04:52:56,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-28 04:52:56,502 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:56,502 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:56,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:52:56,503 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:56,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:56,504 INFO L85 PathProgramCache]: Analyzing trace with hash 652645988, now seen corresponding path program 1 times [2024-11-28 04:52:56,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:56,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932726022] [2024-11-28 04:52:56,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:56,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 04:52:56,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:56,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932726022] [2024-11-28 04:52:56,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932726022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:56,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:56,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:56,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655672013] [2024-11-28 04:52:56,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:56,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:56,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:56,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:56,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:56,623 INFO L87 Difference]: Start difference. First operand 5752 states and 9742 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:56,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:56,960 INFO L93 Difference]: Finished difference Result 14114 states and 24050 transitions. [2024-11-28 04:52:56,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:56,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2024-11-28 04:52:56,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:57,025 INFO L225 Difference]: With dead ends: 14114 [2024-11-28 04:52:57,025 INFO L226 Difference]: Without dead ends: 9544 [2024-11-28 04:52:57,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:57,045 INFO L435 NwaCegarLoop]: 470 mSDtfsCounter, 102 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:57,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 932 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:52:57,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9544 states. [2024-11-28 04:52:57,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9544 to 9536. [2024-11-28 04:52:57,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9536 states, 7935 states have (on average 1.6153749212350346) internal successors, (12818), 7941 states have internal predecessors, (12818), 1572 states have call successors, (1572), 27 states have call predecessors, (1572), 28 states have return successors, (1767), 1570 states have call predecessors, (1767), 1571 states have call successors, (1767) [2024-11-28 04:52:57,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9536 states to 9536 states and 16157 transitions. [2024-11-28 04:52:57,639 INFO L78 Accepts]: Start accepts. Automaton has 9536 states and 16157 transitions. Word has length 134 [2024-11-28 04:52:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:57,640 INFO L471 AbstractCegarLoop]: Abstraction has 9536 states and 16157 transitions. [2024-11-28 04:52:57,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:57,640 INFO L276 IsEmpty]: Start isEmpty. Operand 9536 states and 16157 transitions. [2024-11-28 04:52:57,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-28 04:52:57,675 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:57,675 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:57,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:52:57,676 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:57,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:57,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2060084459, now seen corresponding path program 1 times [2024-11-28 04:52:57,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:57,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885263775] [2024-11-28 04:52:57,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:57,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 04:52:57,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:57,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885263775] [2024-11-28 04:52:57,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885263775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:57,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:57,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:57,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883196691] [2024-11-28 04:52:57,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:57,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:57,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:57,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:57,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:57,800 INFO L87 Difference]: Start difference. First operand 9536 states and 16157 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:58,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:52:58,486 INFO L93 Difference]: Finished difference Result 24585 states and 41812 transitions. [2024-11-28 04:52:58,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:52:58,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 135 [2024-11-28 04:52:58,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:52:58,583 INFO L225 Difference]: With dead ends: 24585 [2024-11-28 04:52:58,583 INFO L226 Difference]: Without dead ends: 16691 [2024-11-28 04:52:58,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:58,622 INFO L435 NwaCegarLoop]: 484 mSDtfsCounter, 100 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:52:58,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 951 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:52:58,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16691 states. [2024-11-28 04:52:59,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16691 to 16683. [2024-11-28 04:52:59,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16683 states, 13879 states have (on average 1.6065998991281794) internal successors, (22298), 13885 states have internal predecessors, (22298), 2775 states have call successors, (2775), 27 states have call predecessors, (2775), 28 states have return successors, (3114), 2773 states have call predecessors, (3114), 2774 states have call successors, (3114) [2024-11-28 04:52:59,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16683 states to 16683 states and 28187 transitions. [2024-11-28 04:52:59,706 INFO L78 Accepts]: Start accepts. Automaton has 16683 states and 28187 transitions. Word has length 135 [2024-11-28 04:52:59,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:52:59,707 INFO L471 AbstractCegarLoop]: Abstraction has 16683 states and 28187 transitions. [2024-11-28 04:52:59,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:52:59,707 INFO L276 IsEmpty]: Start isEmpty. Operand 16683 states and 28187 transitions. [2024-11-28 04:52:59,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 04:52:59,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:52:59,754 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:52:59,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 04:52:59,754 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:52:59,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:52:59,755 INFO L85 PathProgramCache]: Analyzing trace with hash -936971837, now seen corresponding path program 1 times [2024-11-28 04:52:59,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:52:59,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192775440] [2024-11-28 04:52:59,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:52:59,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:52:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:52:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 04:52:59,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:52:59,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192775440] [2024-11-28 04:52:59,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192775440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:52:59,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:52:59,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:52:59,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302760940] [2024-11-28 04:52:59,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:52:59,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:52:59,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:52:59,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:52:59,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:52:59,831 INFO L87 Difference]: Start difference. First operand 16683 states and 28187 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:53:00,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:00,785 INFO L93 Difference]: Finished difference Result 44121 states and 74845 transitions. [2024-11-28 04:53:00,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:53:00,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 136 [2024-11-28 04:53:00,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:00,937 INFO L225 Difference]: With dead ends: 44121 [2024-11-28 04:53:00,938 INFO L226 Difference]: Without dead ends: 29728 [2024-11-28 04:53:00,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:53:00,989 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 98 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:00,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 930 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:53:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29728 states. [2024-11-28 04:53:02,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29728 to 29720. [2024-11-28 04:53:02,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29720 states, 24877 states have (on average 1.6022028379627768) internal successors, (39858), 24883 states have internal predecessors, (39858), 4814 states have call successors, (4814), 27 states have call predecessors, (4814), 28 states have return successors, (5427), 4812 states have call predecessors, (5427), 4813 states have call successors, (5427) [2024-11-28 04:53:02,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29720 states to 29720 states and 50099 transitions. [2024-11-28 04:53:02,942 INFO L78 Accepts]: Start accepts. Automaton has 29720 states and 50099 transitions. Word has length 136 [2024-11-28 04:53:02,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:02,942 INFO L471 AbstractCegarLoop]: Abstraction has 29720 states and 50099 transitions. [2024-11-28 04:53:02,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:53:02,943 INFO L276 IsEmpty]: Start isEmpty. Operand 29720 states and 50099 transitions. [2024-11-28 04:53:03,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-28 04:53:03,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:03,019 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:03,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 04:53:03,020 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:03,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:03,020 INFO L85 PathProgramCache]: Analyzing trace with hash -102264887, now seen corresponding path program 1 times [2024-11-28 04:53:03,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:03,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442279036] [2024-11-28 04:53:03,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:03,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:03,128 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 04:53:03,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:03,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442279036] [2024-11-28 04:53:03,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442279036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:03,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:03,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:53:03,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996495265] [2024-11-28 04:53:03,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:03,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:53:03,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:03,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:53:03,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:53:03,131 INFO L87 Difference]: Start difference. First operand 29720 states and 50099 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:53:05,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:05,193 INFO L93 Difference]: Finished difference Result 81023 states and 137002 transitions. [2024-11-28 04:53:05,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:53:05,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 137 [2024-11-28 04:53:05,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:05,472 INFO L225 Difference]: With dead ends: 81023 [2024-11-28 04:53:05,472 INFO L226 Difference]: Without dead ends: 54368 [2024-11-28 04:53:05,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:53:05,552 INFO L435 NwaCegarLoop]: 470 mSDtfsCounter, 96 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:05,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 932 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:53:05,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54368 states. [2024-11-28 04:53:08,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54368 to 54360. [2024-11-28 04:53:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54360 states, 45802 states have (on average 1.596436836819353) internal successors, (73120), 45808 states have internal predecessors, (73120), 8529 states have call successors, (8529), 27 states have call predecessors, (8529), 28 states have return successors, (9674), 8527 states have call predecessors, (9674), 8528 states have call successors, (9674) [2024-11-28 04:53:08,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54360 states to 54360 states and 91323 transitions. [2024-11-28 04:53:08,631 INFO L78 Accepts]: Start accepts. Automaton has 54360 states and 91323 transitions. Word has length 137 [2024-11-28 04:53:08,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:08,632 INFO L471 AbstractCegarLoop]: Abstraction has 54360 states and 91323 transitions. [2024-11-28 04:53:08,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:53:08,632 INFO L276 IsEmpty]: Start isEmpty. Operand 54360 states and 91323 transitions. [2024-11-28 04:53:08,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 04:53:08,710 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:08,710 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:08,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 04:53:08,710 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:08,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:08,711 INFO L85 PathProgramCache]: Analyzing trace with hash -51417053, now seen corresponding path program 1 times [2024-11-28 04:53:08,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:08,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838833732] [2024-11-28 04:53:08,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:08,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 04:53:08,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:08,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838833732] [2024-11-28 04:53:08,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838833732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:08,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:53:08,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:53:08,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591796703] [2024-11-28 04:53:08,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:08,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:53:08,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:08,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:53:08,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:53:08,822 INFO L87 Difference]: Start difference. First operand 54360 states and 91323 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:53:11,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:11,908 INFO L93 Difference]: Finished difference Result 101560 states and 170900 transitions. [2024-11-28 04:53:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:53:11,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 138 [2024-11-28 04:53:11,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:12,394 INFO L225 Difference]: With dead ends: 101560 [2024-11-28 04:53:12,394 INFO L226 Difference]: Without dead ends: 101354 [2024-11-28 04:53:12,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:53:12,435 INFO L435 NwaCegarLoop]: 477 mSDtfsCounter, 91 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:12,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 944 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:53:12,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101354 states. [2024-11-28 04:53:16,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101354 to 101346. [2024-11-28 04:53:16,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101346 states, 85989 states have (on average 1.5893079347358383) internal successors, (136663), 85995 states have internal predecessors, (136663), 15328 states have call successors, (15328), 27 states have call predecessors, (15328), 28 states have return successors, (17519), 15326 states have call predecessors, (17519), 15327 states have call successors, (17519) [2024-11-28 04:53:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101346 states to 101346 states and 169510 transitions. [2024-11-28 04:53:17,070 INFO L78 Accepts]: Start accepts. Automaton has 101346 states and 169510 transitions. Word has length 138 [2024-11-28 04:53:17,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:53:17,071 INFO L471 AbstractCegarLoop]: Abstraction has 101346 states and 169510 transitions. [2024-11-28 04:53:17,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:53:17,071 INFO L276 IsEmpty]: Start isEmpty. Operand 101346 states and 169510 transitions. [2024-11-28 04:53:17,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-28 04:53:17,143 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:53:17,143 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:53:17,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 04:53:17,143 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:53:17,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:53:17,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1830959338, now seen corresponding path program 1 times [2024-11-28 04:53:17,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:53:17,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108539260] [2024-11-28 04:53:17,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:17,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:53:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:18,063 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 04:53:18,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:53:18,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108539260] [2024-11-28 04:53:18,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108539260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:53:18,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232280454] [2024-11-28 04:53:18,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:53:18,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:53:18,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:53:18,066 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:53:18,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d86f174-536a-4022-92c2-ef0bfa4334df/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:53:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:53:18,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:53:18,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:53:19,246 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:53:19,247 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:53:19,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232280454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:53:19,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:53:19,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 22 [2024-11-28 04:53:19,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505697970] [2024-11-28 04:53:19,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:53:19,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:53:19,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:53:19,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:53:19,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:53:19,251 INFO L87 Difference]: Start difference. First operand 101346 states and 169510 transitions. Second operand has 12 states, 11 states have (on average 9.545454545454545) internal successors, (105), 9 states have internal predecessors, (105), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-28 04:53:25,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:53:25,298 INFO L93 Difference]: Finished difference Result 202072 states and 343446 transitions. [2024-11-28 04:53:25,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:53:25,299 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.545454545454545) internal successors, (105), 9 states have internal predecessors, (105), 5 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 139 [2024-11-28 04:53:25,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:53:26,204 INFO L225 Difference]: With dead ends: 202072 [2024-11-28 04:53:26,204 INFO L226 Difference]: Without dead ends: 201896 [2024-11-28 04:53:26,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=896, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:53:26,292 INFO L435 NwaCegarLoop]: 599 mSDtfsCounter, 757 mSDsluCounter, 4131 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 4730 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:53:26,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 4730 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:53:26,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201896 states.