./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product33.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_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f09e5adfeee9c308429dc6a96730836c8dd32d7c1bd2833eb57924261e76e35 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:57:45,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:57:45,794 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 13:57:45,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:57:45,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:57:45,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:57:45,822 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:57:45,822 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:57:45,822 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:57:45,822 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:57:45,822 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:57:45,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:57:45,823 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:57:45,823 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:57:45,823 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:57:45,823 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:57:45,823 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:57:45,823 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:57:45,823 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:57:45,823 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:57:45,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:57:45,824 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:57:45,824 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:57:45,824 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:57:45,824 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:57:45,824 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:57:45,824 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:57:45,824 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:57:45,824 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:57:45,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:57:45,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:57:45,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:57:45,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:57:45,825 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:57:45,825 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:57:45,825 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:57:45,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:57:45,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:57:45,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:57:45,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:57:45,825 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:57:45,825 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:57:45,825 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:57:45,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:57:45,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:57:45,826 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:57:45,826 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:57:45,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:57:45,826 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_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f09e5adfeee9c308429dc6a96730836c8dd32d7c1bd2833eb57924261e76e35 [2024-12-02 13:57:46,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:57:46,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:57:46,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:57:46,067 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:57:46,067 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:57:46,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/email_spec27_product33.cil.c [2024-12-02 13:57:48,666 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/data/66bb3ae67/97c9c3b032a344a19bba5d18d540ba9d/FLAGfbdb192c2 [2024-12-02 13:57:48,976 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:57:48,977 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/sv-benchmarks/c/product-lines/email_spec27_product33.cil.c [2024-12-02 13:57:48,993 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/data/66bb3ae67/97c9c3b032a344a19bba5d18d540ba9d/FLAGfbdb192c2 [2024-12-02 13:57:49,006 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/data/66bb3ae67/97c9c3b032a344a19bba5d18d540ba9d [2024-12-02 13:57:49,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:57:49,009 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:57:49,010 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:57:49,010 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:57:49,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:57:49,014 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:57:49" (1/1) ... [2024-12-02 13:57:49,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b810774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:49, skipping insertion in model container [2024-12-02 13:57:49,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:57:49" (1/1) ... [2024-12-02 13:57:49,051 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:57:49,170 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_c4c905f5-cff0-4d87-82ae-0ccb65f96401/sv-benchmarks/c/product-lines/email_spec27_product33.cil.c[1543,1556] [2024-12-02 13:57:49,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:57:49,481 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:57:49,488 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-12-02 13:57:49,490 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Util.i","") [57] [2024-12-02 13:57:49,490 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [75] [2024-12-02 13:57:49,490 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [441] [2024-12-02 13:57:49,490 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Email.i","") [767] [2024-12-02 13:57:49,491 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [915] [2024-12-02 13:57:49,491 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"VerifyForward_spec.i","") [1134] [2024-12-02 13:57:49,491 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1166] [2024-12-02 13:57:49,491 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"EmailLib.i","") [1201] [2024-12-02 13:57:49,491 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"ClientLib.i","") [1603] [2024-12-02 13:57:49,491 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Client.i","") [2673] [2024-12-02 13:57:49,494 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_c4c905f5-cff0-4d87-82ae-0ccb65f96401/sv-benchmarks/c/product-lines/email_spec27_product33.cil.c[1543,1556] [2024-12-02 13:57:49,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:57:49,608 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:57:49,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:49 WrapperNode [2024-12-02 13:57:49,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:57:49,609 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:57:49,609 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:57:49,610 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:57:49,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:49" (1/1) ... [2024-12-02 13:57:49,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:49" (1/1) ... [2024-12-02 13:57:49,674 INFO L138 Inliner]: procedures = 134, calls = 213, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1070 [2024-12-02 13:57:49,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:57:49,675 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:57:49,675 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:57:49,675 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:57:49,684 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:49" (1/1) ... [2024-12-02 13:57:49,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:49" (1/1) ... [2024-12-02 13:57:49,690 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:49" (1/1) ... [2024-12-02 13:57:49,711 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 4, 4, 4]. 29 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 4, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-12-02 13:57:49,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:49" (1/1) ... [2024-12-02 13:57:49,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:49" (1/1) ... [2024-12-02 13:57:49,728 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:49" (1/1) ... [2024-12-02 13:57:49,730 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:49" (1/1) ... [2024-12-02 13:57:49,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:49" (1/1) ... [2024-12-02 13:57:49,742 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:49" (1/1) ... [2024-12-02 13:57:49,745 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:49" (1/1) ... [2024-12-02 13:57:49,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:57:49,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:57:49,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:57:49,753 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:57:49,754 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:49" (1/1) ... [2024-12-02 13:57:49,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:57:49,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:57:49,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:57:49,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:57:49,808 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2024-12-02 13:57:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2024-12-02 13:57:49,808 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2024-12-02 13:57:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2024-12-02 13:57:49,808 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2024-12-02 13:57:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2024-12-02 13:57:49,809 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2024-12-02 13:57:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2024-12-02 13:57:49,809 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2024-12-02 13:57:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2024-12-02 13:57:49,809 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2024-12-02 13:57:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2024-12-02 13:57:49,809 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2024-12-02 13:57:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2024-12-02 13:57:49,809 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2024-12-02 13:57:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2024-12-02 13:57:49,809 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2024-12-02 13:57:49,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2024-12-02 13:57:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2024-12-02 13:57:49,810 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2024-12-02 13:57:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2024-12-02 13:57:49,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2024-12-02 13:57:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2024-12-02 13:57:49,810 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2024-12-02 13:57:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2024-12-02 13:57:49,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2024-12-02 13:57:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:57:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2024-12-02 13:57:49,810 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2024-12-02 13:57:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2024-12-02 13:57:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2024-12-02 13:57:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2024-12-02 13:57:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2024-12-02 13:57:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2024-12-02 13:57:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2024-12-02 13:57:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2024-12-02 13:57:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2024-12-02 13:57:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2024-12-02 13:57:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2024-12-02 13:57:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2024-12-02 13:57:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2024-12-02 13:57:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2024-12-02 13:57:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2024-12-02 13:57:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2024-12-02 13:57:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2024-12-02 13:57:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2024-12-02 13:57:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2024-12-02 13:57:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2024-12-02 13:57:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2024-12-02 13:57:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:57:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 13:57:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 13:57:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 13:57:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2024-12-02 13:57:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2024-12-02 13:57:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:57:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:57:50,012 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:57:50,015 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:57:50,862 INFO L? ?]: Removed 499 outVars from TransFormulas that were not future-live. [2024-12-02 13:57:50,862 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:57:50,881 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:57:50,881 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 13:57:50,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:57:50 BoogieIcfgContainer [2024-12-02 13:57:50,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:57:50,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:57:50,884 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:57:50,888 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:57:50,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:57:49" (1/3) ... [2024-12-02 13:57:50,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff1d2b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:57:50, skipping insertion in model container [2024-12-02 13:57:50,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:57:49" (2/3) ... [2024-12-02 13:57:50,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff1d2b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:57:50, skipping insertion in model container [2024-12-02 13:57:50,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:57:50" (3/3) ... [2024-12-02 13:57:50,891 INFO L128 eAbstractionObserver]: Analyzing ICFG email_spec27_product33.cil.c [2024-12-02 13:57:50,906 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:57:50,908 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG email_spec27_product33.cil.c that has 26 procedures, 393 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 13:57:50,970 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:57:50,982 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;@26bc0407, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:57:50,982 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:57:50,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 393 states, 301 states have (on average 1.4983388704318936) internal successors, (451), 305 states have internal predecessors, (451), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2024-12-02 13:57:51,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 13:57:51,003 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:51,004 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:51,005 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:57:51,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:57:51,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1239154883, now seen corresponding path program 1 times [2024-12-02 13:57:51,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:57:51,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916859502] [2024-12-02 13:57:51,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:51,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:57:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 13:57:51,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:57:51,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916859502] [2024-12-02 13:57:51,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916859502] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:57:51,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897190977] [2024-12-02 13:57:51,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:51,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:57:51,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:57:51,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:57:51,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:57:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:52,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 13:57:52,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:57:52,120 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 13:57:52,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:57:52,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897190977] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:57:52,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:57:52,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2024-12-02 13:57:52,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514847032] [2024-12-02 13:57:52,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:57:52,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 13:57:52,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:57:52,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 13:57:52,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:57:52,150 INFO L87 Difference]: Start difference. First operand has 393 states, 301 states have (on average 1.4983388704318936) internal successors, (451), 305 states have internal predecessors, (451), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:57:52,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:57:52,209 INFO L93 Difference]: Finished difference Result 628 states and 909 transitions. [2024-12-02 13:57:52,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 13:57:52,211 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 142 [2024-12-02 13:57:52,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:57:52,224 INFO L225 Difference]: With dead ends: 628 [2024-12-02 13:57:52,224 INFO L226 Difference]: Without dead ends: 386 [2024-12-02 13:57:52,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:57:52,232 INFO L435 NwaCegarLoop]: 577 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, 577 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 [2024-12-02 13:57:52,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:57:52,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-12-02 13:57:52,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2024-12-02 13:57:52,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 295 states have (on average 1.4915254237288136) internal successors, (440), 298 states have internal predecessors, (440), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-12-02 13:57:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 569 transitions. [2024-12-02 13:57:52,291 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 569 transitions. Word has length 142 [2024-12-02 13:57:52,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:57:52,292 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 569 transitions. [2024-12-02 13:57:52,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:57:52,293 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 569 transitions. [2024-12-02 13:57:52,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 13:57:52,298 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:52,298 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:52,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:57:52,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:57:52,499 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:57:52,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:57:52,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1853967811, now seen corresponding path program 1 times [2024-12-02 13:57:52,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:57:52,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512510178] [2024-12-02 13:57:52,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:52,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:57:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 13:57:52,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:57:52,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512510178] [2024-12-02 13:57:52,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512510178] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:57:52,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680585701] [2024-12-02 13:57:52,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:52,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:57:52,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:57:52,879 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:57:52,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:57:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:53,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 13:57:53,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:57:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 13:57:53,240 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:57:53,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680585701] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:57:53,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:57:53,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 13:57:53,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228561187] [2024-12-02 13:57:53,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:57:53,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:57:53,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:57:53,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:57:53,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:57:53,243 INFO L87 Difference]: Start difference. First operand 386 states and 569 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:57:53,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:57:53,279 INFO L93 Difference]: Finished difference Result 617 states and 889 transitions. [2024-12-02 13:57:53,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:57:53,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 142 [2024-12-02 13:57:53,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:57:53,284 INFO L225 Difference]: With dead ends: 617 [2024-12-02 13:57:53,284 INFO L226 Difference]: Without dead ends: 388 [2024-12-02 13:57:53,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:57:53,286 INFO L435 NwaCegarLoop]: 567 mSDtfsCounter, 1 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1132 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 [2024-12-02 13:57:53,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1132 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:57:53,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-12-02 13:57:53,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 387. [2024-12-02 13:57:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 296 states have (on average 1.489864864864865) internal successors, (441), 299 states have internal predecessors, (441), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-12-02 13:57:53,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 570 transitions. [2024-12-02 13:57:53,313 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 570 transitions. Word has length 142 [2024-12-02 13:57:53,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:57:53,313 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 570 transitions. [2024-12-02 13:57:53,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:57:53,313 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 570 transitions. [2024-12-02 13:57:53,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 13:57:53,316 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:53,316 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:53,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 13:57:53,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:57:53,516 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:57:53,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:57:53,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1868432298, now seen corresponding path program 1 times [2024-12-02 13:57:53,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:57:53,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44648243] [2024-12-02 13:57:53,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:53,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:57:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 13:57:53,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:57:53,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44648243] [2024-12-02 13:57:53,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44648243] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:57:53,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643169228] [2024-12-02 13:57:53,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:53,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:57:53,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:57:53,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:57:53,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:57:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:54,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 13:57:54,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:57:54,072 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 13:57:54,072 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:57:54,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643169228] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:57:54,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:57:54,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-12-02 13:57:54,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093225456] [2024-12-02 13:57:54,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:57:54,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:57:54,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:57:54,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:57:54,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:57:54,074 INFO L87 Difference]: Start difference. First operand 387 states and 570 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, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:57:54,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:57:54,107 INFO L93 Difference]: Finished difference Result 809 states and 1207 transitions. [2024-12-02 13:57:54,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:57:54,107 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, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 150 [2024-12-02 13:57:54,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:57:54,111 INFO L225 Difference]: With dead ends: 809 [2024-12-02 13:57:54,111 INFO L226 Difference]: Without dead ends: 448 [2024-12-02 13:57:54,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 13:57:54,112 INFO L435 NwaCegarLoop]: 583 mSDtfsCounter, 115 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:57:54,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1105 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:57:54,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-12-02 13:57:54,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 440. [2024-12-02 13:57:54,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 338 states have (on average 1.5088757396449703) internal successors, (510), 341 states have internal predecessors, (510), 76 states have call successors, (76), 25 states have call predecessors, (76), 25 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-12-02 13:57:54,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 661 transitions. [2024-12-02 13:57:54,133 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 661 transitions. Word has length 150 [2024-12-02 13:57:54,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:57:54,133 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 661 transitions. [2024-12-02 13:57:54,134 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, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:57:54,134 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 661 transitions. [2024-12-02 13:57:54,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 13:57:54,136 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:54,137 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:54,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 13:57:54,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:57:54,337 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:57:54,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:57:54,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1559236531, now seen corresponding path program 1 times [2024-12-02 13:57:54,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:57:54,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539599299] [2024-12-02 13:57:54,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:54,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:57:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 13:57:54,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:57:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539599299] [2024-12-02 13:57:54,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539599299] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:57:54,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710165115] [2024-12-02 13:57:54,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:54,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:57:54,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:57:54,544 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:57:54,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 13:57:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:54,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 13:57:54,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:57:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 13:57:54,935 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:57:54,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710165115] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:57:54,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:57:54,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-02 13:57:54,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843586116] [2024-12-02 13:57:54,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:57:54,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:57:54,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:57:54,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:57:54,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:57:54,937 INFO L87 Difference]: Start difference. First operand 440 states and 661 transitions. Second operand has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 13:57:55,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:57:55,008 INFO L93 Difference]: Finished difference Result 871 states and 1312 transitions. [2024-12-02 13:57:55,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:57:55,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 151 [2024-12-02 13:57:55,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:57:55,012 INFO L225 Difference]: With dead ends: 871 [2024-12-02 13:57:55,012 INFO L226 Difference]: Without dead ends: 442 [2024-12-02 13:57:55,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:57:55,014 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 2 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:57:55,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2233 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:57:55,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-12-02 13:57:55,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2024-12-02 13:57:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 339 states have (on average 1.5073746312684366) internal successors, (511), 343 states have internal predecessors, (511), 76 states have call successors, (76), 25 states have call predecessors, (76), 26 states have return successors, (77), 75 states have call predecessors, (77), 75 states have call successors, (77) [2024-12-02 13:57:55,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 664 transitions. [2024-12-02 13:57:55,035 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 664 transitions. Word has length 151 [2024-12-02 13:57:55,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:57:55,035 INFO L471 AbstractCegarLoop]: Abstraction has 442 states and 664 transitions. [2024-12-02 13:57:55,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.75) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 13:57:55,036 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 664 transitions. [2024-12-02 13:57:55,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-12-02 13:57:55,039 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:55,039 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:55,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 13:57:55,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:57:55,239 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:57:55,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:57:55,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1642572412, now seen corresponding path program 1 times [2024-12-02 13:57:55,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:57:55,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992352716] [2024-12-02 13:57:55,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:55,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:57:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 13:57:55,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:57:55,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992352716] [2024-12-02 13:57:55,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992352716] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:57:55,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854742832] [2024-12-02 13:57:55,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:55,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:57:55,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:57:55,451 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:57:55,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 13:57:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:55,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:57:55,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:57:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 13:57:55,822 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:57:55,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854742832] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:57:55,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:57:55,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-12-02 13:57:55,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584908111] [2024-12-02 13:57:55,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:57:55,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:57:55,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:57:55,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:57:55,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:57:55,824 INFO L87 Difference]: Start difference. First operand 442 states and 664 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 13:57:55,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:57:55,894 INFO L93 Difference]: Finished difference Result 873 states and 1317 transitions. [2024-12-02 13:57:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:57:55,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 152 [2024-12-02 13:57:55,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:57:55,898 INFO L225 Difference]: With dead ends: 873 [2024-12-02 13:57:55,898 INFO L226 Difference]: Without dead ends: 444 [2024-12-02 13:57:55,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:57:55,901 INFO L435 NwaCegarLoop]: 559 mSDtfsCounter, 2 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:57:55,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2219 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:57:55,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-12-02 13:57:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2024-12-02 13:57:55,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 340 states have (on average 1.5058823529411764) internal successors, (512), 345 states have internal predecessors, (512), 76 states have call successors, (76), 25 states have call predecessors, (76), 27 states have return successors, (82), 75 states have call predecessors, (82), 75 states have call successors, (82) [2024-12-02 13:57:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 670 transitions. [2024-12-02 13:57:55,921 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 670 transitions. Word has length 152 [2024-12-02 13:57:55,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:57:55,922 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 670 transitions. [2024-12-02 13:57:55,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 13:57:55,922 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 670 transitions. [2024-12-02 13:57:55,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-12-02 13:57:55,925 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:55,925 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:55,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 13:57:56,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:57:56,126 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:57:56,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:57:56,126 INFO L85 PathProgramCache]: Analyzing trace with hash 671088728, now seen corresponding path program 1 times [2024-12-02 13:57:56,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:57:56,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226957339] [2024-12-02 13:57:56,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:56,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:57:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 13:57:56,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:57:56,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226957339] [2024-12-02 13:57:56,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226957339] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:57:56,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:57:56,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:57:56,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032699103] [2024-12-02 13:57:56,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:57:56,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:57:56,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:57:56,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:57:56,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:57:56,313 INFO L87 Difference]: Start difference. First operand 444 states and 670 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 13:57:56,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:57:56,353 INFO L93 Difference]: Finished difference Result 865 states and 1308 transitions. [2024-12-02 13:57:56,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:57:56,353 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 153 [2024-12-02 13:57:56,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:57:56,356 INFO L225 Difference]: With dead ends: 865 [2024-12-02 13:57:56,356 INFO L226 Difference]: Without dead ends: 444 [2024-12-02 13:57:56,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:57:56,358 INFO L435 NwaCegarLoop]: 562 mSDtfsCounter, 2 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:57:56,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2237 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:57:56,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-12-02 13:57:56,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2024-12-02 13:57:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 340 states have (on average 1.5058823529411764) internal successors, (512), 345 states have internal predecessors, (512), 76 states have call successors, (76), 25 states have call predecessors, (76), 27 states have return successors, (81), 75 states have call predecessors, (81), 75 states have call successors, (81) [2024-12-02 13:57:56,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 669 transitions. [2024-12-02 13:57:56,372 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 669 transitions. Word has length 153 [2024-12-02 13:57:56,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:57:56,373 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 669 transitions. [2024-12-02 13:57:56,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 13:57:56,373 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 669 transitions. [2024-12-02 13:57:56,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 13:57:56,375 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:56,375 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:56,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 13:57:56,375 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:57:56,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:57:56,376 INFO L85 PathProgramCache]: Analyzing trace with hash 362804735, now seen corresponding path program 2 times [2024-12-02 13:57:56,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:57:56,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739125098] [2024-12-02 13:57:56,376 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:57:56,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:57:56,403 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 13:57:56,403 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:57:56,524 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 13:57:56,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:57:56,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739125098] [2024-12-02 13:57:56,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739125098] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:57:56,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:57:56,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 13:57:56,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931541121] [2024-12-02 13:57:56,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:57:56,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:57:56,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:57:56,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:57:56,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:57:56,526 INFO L87 Difference]: Start difference. First operand 444 states and 669 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 13:57:57,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:57:57,080 INFO L93 Difference]: Finished difference Result 1026 states and 1554 transitions. [2024-12-02 13:57:57,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 13:57:57,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 154 [2024-12-02 13:57:57,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:57:57,085 INFO L225 Difference]: With dead ends: 1026 [2024-12-02 13:57:57,085 INFO L226 Difference]: Without dead ends: 805 [2024-12-02 13:57:57,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-12-02 13:57:57,086 INFO L435 NwaCegarLoop]: 618 mSDtfsCounter, 644 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 3752 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:57:57,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 3752 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:57:57,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-12-02 13:57:57,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 717. [2024-12-02 13:57:57,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 559 states have (on average 1.5509838998211092) internal successors, (867), 565 states have internal predecessors, (867), 115 states have call successors, (115), 41 states have call predecessors, (115), 42 states have return successors, (129), 113 states have call predecessors, (129), 114 states have call successors, (129) [2024-12-02 13:57:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1111 transitions. [2024-12-02 13:57:57,113 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1111 transitions. Word has length 154 [2024-12-02 13:57:57,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:57:57,114 INFO L471 AbstractCegarLoop]: Abstraction has 717 states and 1111 transitions. [2024-12-02 13:57:57,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 13:57:57,114 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1111 transitions. [2024-12-02 13:57:57,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 13:57:57,116 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:57,116 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:57,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:57:57,117 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:57:57,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:57:57,117 INFO L85 PathProgramCache]: Analyzing trace with hash -492375459, now seen corresponding path program 1 times [2024-12-02 13:57:57,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:57:57,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370366379] [2024-12-02 13:57:57,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:57,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:57:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:57,356 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 13:57:57,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:57:57,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370366379] [2024-12-02 13:57:57,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370366379] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:57:57,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:57:57,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:57:57,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920474021] [2024-12-02 13:57:57,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:57:57,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:57:57,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:57:57,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:57:57,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:57:57,357 INFO L87 Difference]: Start difference. First operand 717 states and 1111 transitions. Second operand has 5 states, 4 states have (on average 24.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 13:57:57,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:57:57,426 INFO L93 Difference]: Finished difference Result 1413 states and 2195 transitions. [2024-12-02 13:57:57,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:57:57,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2024-12-02 13:57:57,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:57:57,432 INFO L225 Difference]: With dead ends: 1413 [2024-12-02 13:57:57,432 INFO L226 Difference]: Without dead ends: 719 [2024-12-02 13:57:57,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:57:57,436 INFO L435 NwaCegarLoop]: 563 mSDtfsCounter, 1 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:57:57,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2240 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:57:57,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2024-12-02 13:57:57,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2024-12-02 13:57:57,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 560 states have (on average 1.55) internal successors, (868), 567 states have internal predecessors, (868), 115 states have call successors, (115), 41 states have call predecessors, (115), 43 states have return successors, (131), 113 states have call predecessors, (131), 114 states have call successors, (131) [2024-12-02 13:57:57,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1114 transitions. [2024-12-02 13:57:57,473 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1114 transitions. Word has length 156 [2024-12-02 13:57:57,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:57:57,474 INFO L471 AbstractCegarLoop]: Abstraction has 719 states and 1114 transitions. [2024-12-02 13:57:57,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 13:57:57,474 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1114 transitions. [2024-12-02 13:57:57,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 13:57:57,479 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:57,479 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:57,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 13:57:57,479 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:57:57,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:57:57,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1426869339, now seen corresponding path program 1 times [2024-12-02 13:57:57,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:57:57,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435452976] [2024-12-02 13:57:57,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:57,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:57:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 13:57:57,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:57:57,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435452976] [2024-12-02 13:57:57,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435452976] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:57:57,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:57:57,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 13:57:57,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018517931] [2024-12-02 13:57:57,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:57:57,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:57:57,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:57:57,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:57:57,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:57:57,653 INFO L87 Difference]: Start difference. First operand 719 states and 1114 transitions. Second operand has 8 states, 7 states have (on average 14.428571428571429) internal successors, (101), 8 states have internal predecessors, (101), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-12-02 13:57:57,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:57:57,790 INFO L93 Difference]: Finished difference Result 1220 states and 1868 transitions. [2024-12-02 13:57:57,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:57:57,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.428571428571429) internal successors, (101), 8 states have internal predecessors, (101), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 157 [2024-12-02 13:57:57,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:57:57,795 INFO L225 Difference]: With dead ends: 1220 [2024-12-02 13:57:57,795 INFO L226 Difference]: Without dead ends: 728 [2024-12-02 13:57:57,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:57:57,797 INFO L435 NwaCegarLoop]: 553 mSDtfsCounter, 5 mSDsluCounter, 3289 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3842 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 [2024-12-02 13:57:57,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3842 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:57:57,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2024-12-02 13:57:57,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 724. [2024-12-02 13:57:57,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 564 states have (on average 1.547872340425532) internal successors, (873), 571 states have internal predecessors, (873), 115 states have call successors, (115), 42 states have call predecessors, (115), 44 states have return successors, (136), 113 states have call predecessors, (136), 114 states have call successors, (136) [2024-12-02 13:57:57,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1124 transitions. [2024-12-02 13:57:57,831 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1124 transitions. Word has length 157 [2024-12-02 13:57:57,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:57:57,831 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 1124 transitions. [2024-12-02 13:57:57,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.428571428571429) internal successors, (101), 8 states have internal predecessors, (101), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-12-02 13:57:57,832 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1124 transitions. [2024-12-02 13:57:57,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 13:57:57,835 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:57,835 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:57,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 13:57:57,836 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:57:57,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:57:57,836 INFO L85 PathProgramCache]: Analyzing trace with hash -369170087, now seen corresponding path program 2 times [2024-12-02 13:57:57,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:57:57,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118389941] [2024-12-02 13:57:57,836 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 13:57:57,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:57:57,878 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 13:57:57,879 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 13:57:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 13:57:58,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:57:58,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118389941] [2024-12-02 13:57:58,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118389941] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:57:58,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:57:58,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 13:57:58,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949762362] [2024-12-02 13:57:58,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:57:58,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 13:57:58,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:57:58,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 13:57:58,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:57:58,053 INFO L87 Difference]: Start difference. First operand 724 states and 1124 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 13:57:58,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:57:58,188 INFO L93 Difference]: Finished difference Result 997 states and 1513 transitions. [2024-12-02 13:57:58,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 13:57:58,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2024-12-02 13:57:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:57:58,194 INFO L225 Difference]: With dead ends: 997 [2024-12-02 13:57:58,194 INFO L226 Difference]: Without dead ends: 772 [2024-12-02 13:57:58,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:57:58,196 INFO L435 NwaCegarLoop]: 592 mSDtfsCounter, 40 mSDsluCounter, 4088 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 4680 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:57:58,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 4680 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:57:58,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-12-02 13:57:58,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 763. [2024-12-02 13:57:58,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 588 states have (on average 1.5408163265306123) internal successors, (906), 598 states have internal predecessors, (906), 129 states have call successors, (129), 42 states have call predecessors, (129), 45 states have return successors, (154), 126 states have call predecessors, (154), 128 states have call successors, (154) [2024-12-02 13:57:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1189 transitions. [2024-12-02 13:57:58,235 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1189 transitions. Word has length 156 [2024-12-02 13:57:58,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:57:58,236 INFO L471 AbstractCegarLoop]: Abstraction has 763 states and 1189 transitions. [2024-12-02 13:57:58,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 3 states have call successors, (21), 1 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2024-12-02 13:57:58,236 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1189 transitions. [2024-12-02 13:57:58,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-12-02 13:57:58,240 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:58,240 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:58,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 13:57:58,240 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:57:58,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:57:58,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1819749355, now seen corresponding path program 1 times [2024-12-02 13:57:58,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:57:58,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611359139] [2024-12-02 13:57:58,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:58,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:57:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:58,395 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-02 13:57:58,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:57:58,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611359139] [2024-12-02 13:57:58,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611359139] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:57:58,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:57:58,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 13:57:58,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418353579] [2024-12-02 13:57:58,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:57:58,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 13:57:58,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:57:58,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 13:57:58,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:57:58,397 INFO L87 Difference]: Start difference. First operand 763 states and 1189 transitions. Second operand has 8 states, 7 states have (on average 14.714285714285714) internal successors, (103), 8 states have internal predecessors, (103), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-12-02 13:57:58,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:57:58,538 INFO L93 Difference]: Finished difference Result 1293 states and 1992 transitions. [2024-12-02 13:57:58,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:57:58,539 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.714285714285714) internal successors, (103), 8 states have internal predecessors, (103), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 157 [2024-12-02 13:57:58,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:57:58,542 INFO L225 Difference]: With dead ends: 1293 [2024-12-02 13:57:58,542 INFO L226 Difference]: Without dead ends: 561 [2024-12-02 13:57:58,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-12-02 13:57:58,545 INFO L435 NwaCegarLoop]: 553 mSDtfsCounter, 7 mSDsluCounter, 3289 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3842 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:57:58,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3842 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 13:57:58,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2024-12-02 13:57:58,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2024-12-02 13:57:58,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 426 states have (on average 1.4976525821596245) internal successors, (638), 436 states have internal predecessors, (638), 96 states have call successors, (96), 34 states have call predecessors, (96), 38 states have return successors, (113), 94 states have call predecessors, (113), 95 states have call successors, (113) [2024-12-02 13:57:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 847 transitions. [2024-12-02 13:57:58,574 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 847 transitions. Word has length 157 [2024-12-02 13:57:58,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:57:58,574 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 847 transitions. [2024-12-02 13:57:58,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.714285714285714) internal successors, (103), 8 states have internal predecessors, (103), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-12-02 13:57:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 847 transitions. [2024-12-02 13:57:58,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-12-02 13:57:58,578 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:58,578 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:58,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 13:57:58,578 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:57:58,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:57:58,578 INFO L85 PathProgramCache]: Analyzing trace with hash 114780314, now seen corresponding path program 1 times [2024-12-02 13:57:58,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:57:58,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003405000] [2024-12-02 13:57:58,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:58,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:57:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-12-02 13:57:58,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:57:58,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003405000] [2024-12-02 13:57:58,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003405000] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:57:58,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314870187] [2024-12-02 13:57:58,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:57:58,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:57:58,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:57:58,757 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:57:58,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 13:57:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:57:59,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 13:57:59,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:57:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 13:57:59,139 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:57:59,256 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 13:57:59,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314870187] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:57:59,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:57:59,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2024-12-02 13:57:59,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813628115] [2024-12-02 13:57:59,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:57:59,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:57:59,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:57:59,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:57:59,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:57:59,258 INFO L87 Difference]: Start difference. First operand 561 states and 847 transitions. Second operand has 11 states, 10 states have (on average 16.4) internal successors, (164), 11 states have internal predecessors, (164), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 4 states have call successors, (36) [2024-12-02 13:57:59,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:57:59,893 INFO L93 Difference]: Finished difference Result 1464 states and 2296 transitions. [2024-12-02 13:57:59,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 13:57:59,894 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 16.4) internal successors, (164), 11 states have internal predecessors, (164), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 4 states have call successors, (36) Word has length 159 [2024-12-02 13:57:59,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:57:59,900 INFO L225 Difference]: With dead ends: 1464 [2024-12-02 13:57:59,900 INFO L226 Difference]: Without dead ends: 934 [2024-12-02 13:57:59,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-12-02 13:57:59,903 INFO L435 NwaCegarLoop]: 556 mSDtfsCounter, 1441 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 3505 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:57:59,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 3505 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 13:57:59,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2024-12-02 13:57:59,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 910. [2024-12-02 13:57:59,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 711 states have (on average 1.5541490857946554) internal successors, (1105), 720 states have internal predecessors, (1105), 160 states have call successors, (160), 35 states have call predecessors, (160), 38 states have return successors, (187), 158 states have call predecessors, (187), 159 states have call successors, (187) [2024-12-02 13:57:59,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1452 transitions. [2024-12-02 13:57:59,953 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1452 transitions. Word has length 159 [2024-12-02 13:57:59,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:57:59,954 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1452 transitions. [2024-12-02 13:57:59,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 16.4) internal successors, (164), 11 states have internal predecessors, (164), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 4 states have call successors, (36) [2024-12-02 13:57:59,954 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1452 transitions. [2024-12-02 13:57:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-12-02 13:57:59,959 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:57:59,959 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:57:59,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 13:58:00,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 13:58:00,160 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:58:00,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:58:00,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1790367457, now seen corresponding path program 1 times [2024-12-02 13:58:00,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:58:00,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53116383] [2024-12-02 13:58:00,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:00,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:58:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 13:58:00,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:58:00,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53116383] [2024-12-02 13:58:00,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53116383] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:58:00,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:58:00,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:58:00,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140233087] [2024-12-02 13:58:00,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:58:00,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:58:00,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:58:00,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:58:00,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:00,229 INFO L87 Difference]: Start difference. First operand 910 states and 1452 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:00,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:58:00,276 INFO L93 Difference]: Finished difference Result 2065 states and 3352 transitions. [2024-12-02 13:58:00,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:58:00,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 163 [2024-12-02 13:58:00,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:58:00,285 INFO L225 Difference]: With dead ends: 2065 [2024-12-02 13:58:00,285 INFO L226 Difference]: Without dead ends: 1236 [2024-12-02 13:58:00,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:00,289 INFO L435 NwaCegarLoop]: 576 mSDtfsCounter, 112 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:58:00,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 1134 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:58:00,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2024-12-02 13:58:00,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1228. [2024-12-02 13:58:00,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 965 states have (on average 1.5782383419689119) internal successors, (1523), 974 states have internal predecessors, (1523), 224 states have call successors, (224), 35 states have call predecessors, (224), 38 states have return successors, (261), 222 states have call predecessors, (261), 223 states have call successors, (261) [2024-12-02 13:58:00,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 2008 transitions. [2024-12-02 13:58:00,354 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 2008 transitions. Word has length 163 [2024-12-02 13:58:00,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:58:00,354 INFO L471 AbstractCegarLoop]: Abstraction has 1228 states and 2008 transitions. [2024-12-02 13:58:00,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:00,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 2008 transitions. [2024-12-02 13:58:00,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-12-02 13:58:00,361 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:58:00,362 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:58:00,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 13:58:00,362 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:58:00,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:58:00,362 INFO L85 PathProgramCache]: Analyzing trace with hash 810220803, now seen corresponding path program 1 times [2024-12-02 13:58:00,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:58:00,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382245672] [2024-12-02 13:58:00,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:00,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:58:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:00,432 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 13:58:00,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:58:00,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382245672] [2024-12-02 13:58:00,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382245672] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:58:00,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:58:00,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:58:00,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181593130] [2024-12-02 13:58:00,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:58:00,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:58:00,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:58:00,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:58:00,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:00,434 INFO L87 Difference]: Start difference. First operand 1228 states and 2008 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:00,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:58:00,488 INFO L93 Difference]: Finished difference Result 2853 states and 4703 transitions. [2024-12-02 13:58:00,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:58:00,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 164 [2024-12-02 13:58:00,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:58:00,498 INFO L225 Difference]: With dead ends: 2853 [2024-12-02 13:58:00,498 INFO L226 Difference]: Without dead ends: 1757 [2024-12-02 13:58:00,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:00,503 INFO L435 NwaCegarLoop]: 567 mSDtfsCounter, 110 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:58:00,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1128 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:58:00,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2024-12-02 13:58:00,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1749. [2024-12-02 13:58:00,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1749 states, 1391 states have (on average 1.5938173975557153) internal successors, (2217), 1400 states have internal predecessors, (2217), 319 states have call successors, (319), 35 states have call predecessors, (319), 38 states have return successors, (356), 317 states have call predecessors, (356), 318 states have call successors, (356) [2024-12-02 13:58:00,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2892 transitions. [2024-12-02 13:58:00,577 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2892 transitions. Word has length 164 [2024-12-02 13:58:00,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:58:00,578 INFO L471 AbstractCegarLoop]: Abstraction has 1749 states and 2892 transitions. [2024-12-02 13:58:00,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:00,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2892 transitions. [2024-12-02 13:58:00,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-02 13:58:00,583 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:58:00,583 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:58:00,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 13:58:00,583 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:58:00,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:58:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash -557198829, now seen corresponding path program 1 times [2024-12-02 13:58:00,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:58:00,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702572148] [2024-12-02 13:58:00,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:00,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:58:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 13:58:00,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:58:00,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702572148] [2024-12-02 13:58:00,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702572148] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:58:00,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:58:00,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:58:00,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347732535] [2024-12-02 13:58:00,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:58:00,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:58:00,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:58:00,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:58:00,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:00,636 INFO L87 Difference]: Start difference. First operand 1749 states and 2892 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:00,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:58:00,679 INFO L93 Difference]: Finished difference Result 4032 states and 6727 transitions. [2024-12-02 13:58:00,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:58:00,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 165 [2024-12-02 13:58:00,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:58:00,689 INFO L225 Difference]: With dead ends: 4032 [2024-12-02 13:58:00,689 INFO L226 Difference]: Without dead ends: 2546 [2024-12-02 13:58:00,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:00,693 INFO L435 NwaCegarLoop]: 567 mSDtfsCounter, 108 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:58:00,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1125 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:58:00,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2024-12-02 13:58:00,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2538. [2024-12-02 13:58:00,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2538 states, 2057 states have (on average 1.6062226543509965) internal successors, (3304), 2066 states have internal predecessors, (3304), 442 states have call successors, (442), 35 states have call predecessors, (442), 38 states have return successors, (495), 440 states have call predecessors, (495), 441 states have call successors, (495) [2024-12-02 13:58:00,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 4241 transitions. [2024-12-02 13:58:00,771 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 4241 transitions. Word has length 165 [2024-12-02 13:58:00,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:58:00,771 INFO L471 AbstractCegarLoop]: Abstraction has 2538 states and 4241 transitions. [2024-12-02 13:58:00,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:00,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 4241 transitions. [2024-12-02 13:58:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-12-02 13:58:00,780 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:58:00,780 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:58:00,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 13:58:00,781 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:58:00,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:58:00,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1657843134, now seen corresponding path program 1 times [2024-12-02 13:58:00,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:58:00,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615171246] [2024-12-02 13:58:00,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:00,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:58:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 13:58:00,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:58:00,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615171246] [2024-12-02 13:58:00,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615171246] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:58:00,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:58:00,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:58:00,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268374937] [2024-12-02 13:58:00,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:58:00,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:58:00,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:58:00,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:58:00,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:00,850 INFO L87 Difference]: Start difference. First operand 2538 states and 4241 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:00,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:58:00,952 INFO L93 Difference]: Finished difference Result 5870 states and 9884 transitions. [2024-12-02 13:58:00,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:58:00,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 166 [2024-12-02 13:58:00,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:58:00,967 INFO L225 Difference]: With dead ends: 5870 [2024-12-02 13:58:00,967 INFO L226 Difference]: Without dead ends: 3807 [2024-12-02 13:58:00,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:00,974 INFO L435 NwaCegarLoop]: 567 mSDtfsCounter, 106 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:58:00,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 1125 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:58:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3807 states. [2024-12-02 13:58:01,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3807 to 3799. [2024-12-02 13:58:01,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 3139 states have (on average 1.6148454921949666) internal successors, (5069), 3148 states have internal predecessors, (5069), 621 states have call successors, (621), 35 states have call predecessors, (621), 38 states have return successors, (700), 619 states have call predecessors, (700), 620 states have call successors, (700) [2024-12-02 13:58:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 6390 transitions. [2024-12-02 13:58:01,094 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 6390 transitions. Word has length 166 [2024-12-02 13:58:01,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:58:01,094 INFO L471 AbstractCegarLoop]: Abstraction has 3799 states and 6390 transitions. [2024-12-02 13:58:01,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:01,094 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 6390 transitions. [2024-12-02 13:58:01,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-12-02 13:58:01,107 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:58:01,107 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:58:01,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 13:58:01,107 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:58:01,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:58:01,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1644040105, now seen corresponding path program 1 times [2024-12-02 13:58:01,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:58:01,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434046075] [2024-12-02 13:58:01,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:01,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:58:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 13:58:01,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:58:01,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434046075] [2024-12-02 13:58:01,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434046075] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:58:01,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:58:01,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:58:01,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186675180] [2024-12-02 13:58:01,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:58:01,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:58:01,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:58:01,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:58:01,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:01,157 INFO L87 Difference]: Start difference. First operand 3799 states and 6390 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:01,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:58:01,298 INFO L93 Difference]: Finished difference Result 8896 states and 15071 transitions. [2024-12-02 13:58:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:58:01,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 167 [2024-12-02 13:58:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:58:01,327 INFO L225 Difference]: With dead ends: 8896 [2024-12-02 13:58:01,327 INFO L226 Difference]: Without dead ends: 5893 [2024-12-02 13:58:01,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:01,336 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 104 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:58:01,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 1126 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:58:01,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2024-12-02 13:58:01,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 5885. [2024-12-02 13:58:01,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5885 states, 4849 states have (on average 1.6127036502371623) internal successors, (7820), 4858 states have internal predecessors, (7820), 997 states have call successors, (997), 35 states have call predecessors, (997), 38 states have return successors, (1120), 995 states have call predecessors, (1120), 996 states have call successors, (1120) [2024-12-02 13:58:01,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5885 states to 5885 states and 9937 transitions. [2024-12-02 13:58:01,615 INFO L78 Accepts]: Start accepts. Automaton has 5885 states and 9937 transitions. Word has length 167 [2024-12-02 13:58:01,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:58:01,616 INFO L471 AbstractCegarLoop]: Abstraction has 5885 states and 9937 transitions. [2024-12-02 13:58:01,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:01,616 INFO L276 IsEmpty]: Start isEmpty. Operand 5885 states and 9937 transitions. [2024-12-02 13:58:01,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-12-02 13:58:01,658 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:58:01,658 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:58:01,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 13:58:01,658 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:58:01,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:58:01,659 INFO L85 PathProgramCache]: Analyzing trace with hash -115056642, now seen corresponding path program 1 times [2024-12-02 13:58:01,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:58:01,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873054912] [2024-12-02 13:58:01,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:01,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:58:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:01,725 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 13:58:01,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:58:01,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873054912] [2024-12-02 13:58:01,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873054912] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:58:01,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:58:01,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:58:01,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040085577] [2024-12-02 13:58:01,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:58:01,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:58:01,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:58:01,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:58:01,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:01,727 INFO L87 Difference]: Start difference. First operand 5885 states and 9937 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:01,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:58:01,959 INFO L93 Difference]: Finished difference Result 14380 states and 24440 transitions. [2024-12-02 13:58:01,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:58:01,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 168 [2024-12-02 13:58:01,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:58:02,005 INFO L225 Difference]: With dead ends: 14380 [2024-12-02 13:58:02,005 INFO L226 Difference]: Without dead ends: 9677 [2024-12-02 13:58:02,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:02,022 INFO L435 NwaCegarLoop]: 567 mSDtfsCounter, 102 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:58:02,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 1128 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:58:02,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9677 states. [2024-12-02 13:58:02,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9677 to 9669. [2024-12-02 13:58:02,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9669 states, 8027 states have (on average 1.612682197583157) internal successors, (12945), 8036 states have internal predecessors, (12945), 1603 states have call successors, (1603), 35 states have call predecessors, (1603), 38 states have return successors, (1804), 1601 states have call predecessors, (1804), 1602 states have call successors, (1804) [2024-12-02 13:58:02,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9669 states to 9669 states and 16352 transitions. [2024-12-02 13:58:02,526 INFO L78 Accepts]: Start accepts. Automaton has 9669 states and 16352 transitions. Word has length 168 [2024-12-02 13:58:02,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:58:02,526 INFO L471 AbstractCegarLoop]: Abstraction has 9669 states and 16352 transitions. [2024-12-02 13:58:02,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:02,528 INFO L276 IsEmpty]: Start isEmpty. Operand 9669 states and 16352 transitions. [2024-12-02 13:58:02,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-12-02 13:58:02,568 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:58:02,568 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:58:02,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 13:58:02,569 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:58:02,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:58:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash -94149335, now seen corresponding path program 1 times [2024-12-02 13:58:02,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:58:02,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102549603] [2024-12-02 13:58:02,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:02,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:58:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:02,663 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 13:58:02,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:58:02,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102549603] [2024-12-02 13:58:02,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102549603] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:58:02,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:58:02,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:58:02,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020900734] [2024-12-02 13:58:02,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:58:02,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:58:02,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:58:02,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:58:02,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:02,665 INFO L87 Difference]: Start difference. First operand 9669 states and 16352 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:03,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:58:03,265 INFO L93 Difference]: Finished difference Result 24851 states and 42202 transitions. [2024-12-02 13:58:03,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:58:03,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 169 [2024-12-02 13:58:03,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:58:03,331 INFO L225 Difference]: With dead ends: 24851 [2024-12-02 13:58:03,331 INFO L226 Difference]: Without dead ends: 16824 [2024-12-02 13:58:03,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:03,352 INFO L435 NwaCegarLoop]: 588 mSDtfsCounter, 100 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:58:03,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1155 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:58:03,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16824 states. [2024-12-02 13:58:04,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16824 to 16816. [2024-12-02 13:58:04,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16816 states, 13971 states have (on average 1.6051105862143011) internal successors, (22425), 13980 states have internal predecessors, (22425), 2806 states have call successors, (2806), 35 states have call predecessors, (2806), 38 states have return successors, (3151), 2804 states have call predecessors, (3151), 2805 states have call successors, (3151) [2024-12-02 13:58:04,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16816 states to 16816 states and 28382 transitions. [2024-12-02 13:58:04,095 INFO L78 Accepts]: Start accepts. Automaton has 16816 states and 28382 transitions. Word has length 169 [2024-12-02 13:58:04,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:58:04,095 INFO L471 AbstractCegarLoop]: Abstraction has 16816 states and 28382 transitions. [2024-12-02 13:58:04,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:04,096 INFO L276 IsEmpty]: Start isEmpty. Operand 16816 states and 28382 transitions. [2024-12-02 13:58:04,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-12-02 13:58:04,143 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:58:04,143 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:58:04,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 13:58:04,143 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:58:04,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:58:04,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1898983453, now seen corresponding path program 1 times [2024-12-02 13:58:04,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:58:04,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928621695] [2024-12-02 13:58:04,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:04,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:58:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 13:58:04,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:58:04,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928621695] [2024-12-02 13:58:04,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928621695] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:58:04,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:58:04,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:58:04,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543548500] [2024-12-02 13:58:04,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:58:04,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:58:04,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:58:04,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:58:04,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:04,214 INFO L87 Difference]: Start difference. First operand 16816 states and 28382 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:04,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:58:04,817 INFO L93 Difference]: Finished difference Result 44387 states and 75235 transitions. [2024-12-02 13:58:04,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:58:04,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 170 [2024-12-02 13:58:04,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:58:04,906 INFO L225 Difference]: With dead ends: 44387 [2024-12-02 13:58:04,906 INFO L226 Difference]: Without dead ends: 29861 [2024-12-02 13:58:04,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:04,935 INFO L435 NwaCegarLoop]: 567 mSDtfsCounter, 98 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:58:04,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1128 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:58:04,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29861 states. [2024-12-02 13:58:06,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29861 to 29853. [2024-12-02 13:58:06,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29853 states, 24969 states have (on average 1.6013857182906805) internal successors, (39985), 24978 states have internal predecessors, (39985), 4845 states have call successors, (4845), 35 states have call predecessors, (4845), 38 states have return successors, (5464), 4843 states have call predecessors, (5464), 4844 states have call successors, (5464) [2024-12-02 13:58:06,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29853 states to 29853 states and 50294 transitions. [2024-12-02 13:58:06,167 INFO L78 Accepts]: Start accepts. Automaton has 29853 states and 50294 transitions. Word has length 170 [2024-12-02 13:58:06,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:58:06,167 INFO L471 AbstractCegarLoop]: Abstraction has 29853 states and 50294 transitions. [2024-12-02 13:58:06,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:06,168 INFO L276 IsEmpty]: Start isEmpty. Operand 29853 states and 50294 transitions. [2024-12-02 13:58:06,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 13:58:06,235 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:58:06,236 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:58:06,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 13:58:06,236 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:58:06,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:58:06,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1205525511, now seen corresponding path program 1 times [2024-12-02 13:58:06,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:58:06,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070529945] [2024-12-02 13:58:06,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:06,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:58:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 13:58:06,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:58:06,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070529945] [2024-12-02 13:58:06,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070529945] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:58:06,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:58:06,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:58:06,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582418112] [2024-12-02 13:58:06,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:58:06,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:58:06,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:58:06,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:58:06,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:06,302 INFO L87 Difference]: Start difference. First operand 29853 states and 50294 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:07,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:58:07,360 INFO L93 Difference]: Finished difference Result 81289 states and 137392 transitions. [2024-12-02 13:58:07,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:58:07,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 171 [2024-12-02 13:58:07,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:58:07,511 INFO L225 Difference]: With dead ends: 81289 [2024-12-02 13:58:07,511 INFO L226 Difference]: Without dead ends: 54501 [2024-12-02 13:58:07,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:07,567 INFO L435 NwaCegarLoop]: 570 mSDtfsCounter, 96 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:58:07,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1131 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:58:07,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54501 states. [2024-12-02 13:58:09,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54501 to 54493. [2024-12-02 13:58:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54493 states, 45894 states have (on average 1.5960038349239551) internal successors, (73247), 45903 states have internal predecessors, (73247), 8560 states have call successors, (8560), 35 states have call predecessors, (8560), 38 states have return successors, (9711), 8558 states have call predecessors, (9711), 8559 states have call successors, (9711) [2024-12-02 13:58:09,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54493 states to 54493 states and 91518 transitions. [2024-12-02 13:58:09,704 INFO L78 Accepts]: Start accepts. Automaton has 54493 states and 91518 transitions. Word has length 171 [2024-12-02 13:58:09,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:58:09,704 INFO L471 AbstractCegarLoop]: Abstraction has 54493 states and 91518 transitions. [2024-12-02 13:58:09,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:09,705 INFO L276 IsEmpty]: Start isEmpty. Operand 54493 states and 91518 transitions. [2024-12-02 13:58:09,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-12-02 13:58:09,821 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:58:09,822 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:58:09,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 13:58:09,822 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:58:09,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:58:09,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1665336061, now seen corresponding path program 1 times [2024-12-02 13:58:09,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:58:09,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550997143] [2024-12-02 13:58:09,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:09,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:58:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 13:58:09,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:58:09,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550997143] [2024-12-02 13:58:09,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550997143] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:58:09,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:58:09,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 13:58:09,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908183519] [2024-12-02 13:58:09,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:58:09,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 13:58:09,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:58:09,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 13:58:09,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:09,893 INFO L87 Difference]: Start difference. First operand 54493 states and 91518 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:11,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:58:11,638 INFO L93 Difference]: Finished difference Result 101826 states and 171290 transitions. [2024-12-02 13:58:11,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 13:58:11,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 172 [2024-12-02 13:58:11,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:58:11,883 INFO L225 Difference]: With dead ends: 101826 [2024-12-02 13:58:11,883 INFO L226 Difference]: Without dead ends: 101487 [2024-12-02 13:58:11,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 13:58:11,914 INFO L435 NwaCegarLoop]: 569 mSDtfsCounter, 91 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:58:11,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1134 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:58:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101487 states. [2024-12-02 13:58:14,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101487 to 101479. [2024-12-02 13:58:14,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101479 states, 86081 states have (on average 1.5890846992948502) internal successors, (136790), 86090 states have internal predecessors, (136790), 15359 states have call successors, (15359), 35 states have call predecessors, (15359), 38 states have return successors, (17556), 15357 states have call predecessors, (17556), 15358 states have call successors, (17556) [2024-12-02 13:58:15,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101479 states to 101479 states and 169705 transitions. [2024-12-02 13:58:15,084 INFO L78 Accepts]: Start accepts. Automaton has 101479 states and 169705 transitions. Word has length 172 [2024-12-02 13:58:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:58:15,085 INFO L471 AbstractCegarLoop]: Abstraction has 101479 states and 169705 transitions. [2024-12-02 13:58:15,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:58:15,085 INFO L276 IsEmpty]: Start isEmpty. Operand 101479 states and 169705 transitions. [2024-12-02 13:58:15,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 13:58:15,223 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:58:15,223 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:58:15,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 13:58:15,223 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:58:15,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:58:15,223 INFO L85 PathProgramCache]: Analyzing trace with hash 163029096, now seen corresponding path program 1 times [2024-12-02 13:58:15,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:58:15,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944593161] [2024-12-02 13:58:15,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:15,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:58:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-12-02 13:58:15,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:58:15,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944593161] [2024-12-02 13:58:15,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944593161] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:58:15,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858711804] [2024-12-02 13:58:15,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:15,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:58:15,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:58:15,687 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:58:15,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 13:58:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:16,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 13:58:16,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:58:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 13:58:16,300 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:58:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-12-02 13:58:16,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858711804] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:58:16,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:58:16,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 28 [2024-12-02 13:58:16,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588241437] [2024-12-02 13:58:16,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:58:16,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 13:58:16,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:58:16,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 13:58:16,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2024-12-02 13:58:16,635 INFO L87 Difference]: Start difference. First operand 101479 states and 169705 transitions. Second operand has 28 states, 26 states have (on average 10.384615384615385) internal successors, (270), 24 states have internal predecessors, (270), 9 states have call successors, (53), 8 states have call predecessors, (53), 12 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) [2024-12-02 13:58:32,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:58:32,539 INFO L93 Difference]: Finished difference Result 405405 states and 701828 transitions. [2024-12-02 13:58:32,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-12-02 13:58:32,539 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 10.384615384615385) internal successors, (270), 24 states have internal predecessors, (270), 9 states have call successors, (53), 8 states have call predecessors, (53), 12 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) Word has length 173 [2024-12-02 13:58:32,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:58:33,714 INFO L225 Difference]: With dead ends: 405405 [2024-12-02 13:58:33,714 INFO L226 Difference]: Without dead ends: 405095 [2024-12-02 13:58:33,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1363, Invalid=11293, Unknown=0, NotChecked=0, Total=12656 [2024-12-02 13:58:33,807 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 7206 mSDsluCounter, 4973 mSDsCounter, 0 mSdLazyCounter, 12522 mSolverCounterSat, 2430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7271 SdHoareTripleChecker+Valid, 5210 SdHoareTripleChecker+Invalid, 14952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2430 IncrementalHoareTripleChecker+Valid, 12522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:58:33,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7271 Valid, 5210 Invalid, 14952 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2430 Valid, 12522 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-12-02 13:58:33,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405095 states. [2024-12-02 13:58:45,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405095 to 404521. [2024-12-02 13:58:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404521 states, 343214 states have (on average 1.5897253608535782) internal successors, (545616), 343045 states have internal predecessors, (545616), 61092 states have call successors, (61092), 184 states have call predecessors, (61092), 214 states have return successors, (85100), 61313 states have call predecessors, (85100), 61086 states have call successors, (85100) [2024-12-02 13:58:47,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404521 states to 404521 states and 691808 transitions. [2024-12-02 13:58:47,350 INFO L78 Accepts]: Start accepts. Automaton has 404521 states and 691808 transitions. Word has length 173 [2024-12-02 13:58:47,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:58:47,350 INFO L471 AbstractCegarLoop]: Abstraction has 404521 states and 691808 transitions. [2024-12-02 13:58:47,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 10.384615384615385) internal successors, (270), 24 states have internal predecessors, (270), 9 states have call successors, (53), 8 states have call predecessors, (53), 12 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) [2024-12-02 13:58:47,351 INFO L276 IsEmpty]: Start isEmpty. Operand 404521 states and 691808 transitions. [2024-12-02 13:58:47,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:58:47,863 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:58:47,863 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:58:47,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 13:58:48,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 13:58:48,064 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:58:48,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:58:48,064 INFO L85 PathProgramCache]: Analyzing trace with hash -171865832, now seen corresponding path program 1 times [2024-12-02 13:58:48,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:58:48,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894044893] [2024-12-02 13:58:48,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:48,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:58:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:48,366 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 13:58:48,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:58:48,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894044893] [2024-12-02 13:58:48,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894044893] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:58:48,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231494145] [2024-12-02 13:58:48,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:58:48,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:58:48,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:58:48,368 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:58:48,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 13:58:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:58:48,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 13:58:48,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:58:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-12-02 13:58:49,025 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:58:49,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231494145] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:58:49,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:58:49,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2024-12-02 13:58:49,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383653343] [2024-12-02 13:58:49,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:58:49,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 13:58:49,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:58:49,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 13:58:49,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:58:49,027 INFO L87 Difference]: Start difference. First operand 404521 states and 691808 transitions. Second operand has 9 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-12-02 13:58:57,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:58:57,405 INFO L93 Difference]: Finished difference Result 407297 states and 695930 transitions. [2024-12-02 13:58:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:58:57,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 175 [2024-12-02 13:58:57,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:58:58,781 INFO L225 Difference]: With dead ends: 407297 [2024-12-02 13:58:58,781 INFO L226 Difference]: Without dead ends: 405051 [2024-12-02 13:58:58,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2024-12-02 13:58:58,877 INFO L435 NwaCegarLoop]: 516 mSDtfsCounter, 793 mSDsluCounter, 3086 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 3602 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:58:58,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 3602 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 13:58:59,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405051 states. [2024-12-02 13:59:11,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405051 to 405027. [2024-12-02 13:59:11,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405027 states, 343538 states have (on average 1.5894486199488849) internal successors, (546036), 343382 states have internal predecessors, (546036), 61274 states have call successors, (61274), 184 states have call predecessors, (61274), 214 states have return successors, (85314), 61496 states have call predecessors, (85314), 61268 states have call successors, (85314) [2024-12-02 13:59:12,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405027 states to 405027 states and 692624 transitions. [2024-12-02 13:59:12,400 INFO L78 Accepts]: Start accepts. Automaton has 405027 states and 692624 transitions. Word has length 175 [2024-12-02 13:59:12,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:59:12,400 INFO L471 AbstractCegarLoop]: Abstraction has 405027 states and 692624 transitions. [2024-12-02 13:59:12,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2024-12-02 13:59:12,400 INFO L276 IsEmpty]: Start isEmpty. Operand 405027 states and 692624 transitions. [2024-12-02 13:59:12,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 13:59:12,963 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:59:12,963 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:59:12,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 13:59:13,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 13:59:13,164 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:59:13,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:59:13,164 INFO L85 PathProgramCache]: Analyzing trace with hash -587820036, now seen corresponding path program 1 times [2024-12-02 13:59:13,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:59:13,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022862137] [2024-12-02 13:59:13,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:13,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:59:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-12-02 13:59:13,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:59:13,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022862137] [2024-12-02 13:59:13,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022862137] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:59:13,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588083497] [2024-12-02 13:59:13,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:13,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:59:13,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:59:13,244 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:59:13,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 13:59:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:13,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 13:59:13,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:59:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-12-02 13:59:13,635 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:59:13,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588083497] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:59:13,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:59:13,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-02 13:59:13,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199914113] [2024-12-02 13:59:13,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:59:13,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:59:13,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:59:13,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:59:13,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:59:13,636 INFO L87 Difference]: Start difference. First operand 405027 states and 692624 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:59:22,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:59:22,593 INFO L93 Difference]: Finished difference Result 607544 states and 1043270 transitions. [2024-12-02 13:59:22,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:59:22,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 175 [2024-12-02 13:59:22,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:59:24,057 INFO L225 Difference]: With dead ends: 607544 [2024-12-02 13:59:24,058 INFO L226 Difference]: Without dead ends: 405043 [2024-12-02 13:59:24,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 13:59:24,387 INFO L435 NwaCegarLoop]: 559 mSDtfsCounter, 1 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2218 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:59:24,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2218 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:59:24,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405043 states. [2024-12-02 13:59:35,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405043 to 405027. [2024-12-02 13:59:36,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405027 states, 343538 states have (on average 1.5894427981766208) internal successors, (546034), 343382 states have internal predecessors, (546034), 61274 states have call successors, (61274), 184 states have call predecessors, (61274), 214 states have return successors, (85314), 61496 states have call predecessors, (85314), 61268 states have call successors, (85314) [2024-12-02 13:59:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405027 states to 405027 states and 692622 transitions. [2024-12-02 13:59:37,750 INFO L78 Accepts]: Start accepts. Automaton has 405027 states and 692622 transitions. Word has length 175 [2024-12-02 13:59:37,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:59:37,751 INFO L471 AbstractCegarLoop]: Abstraction has 405027 states and 692622 transitions. [2024-12-02 13:59:37,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 13:59:37,751 INFO L276 IsEmpty]: Start isEmpty. Operand 405027 states and 692622 transitions. [2024-12-02 13:59:38,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 13:59:38,402 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:59:38,402 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 13:59:38,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 13:59:38,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 13:59:38,603 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:59:38,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:59:38,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1414056423, now seen corresponding path program 1 times [2024-12-02 13:59:38,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:59:38,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991667969] [2024-12-02 13:59:38,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:38,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:59:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:38,800 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 13:59:38,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:59:38,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991667969] [2024-12-02 13:59:38,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991667969] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:59:38,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146220599] [2024-12-02 13:59:38,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:59:38,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:59:38,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:59:38,802 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:59:38,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 13:59:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:59:39,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 13:59:39,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:59:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-02 13:59:39,322 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:59:39,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146220599] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:59:39,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:59:39,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2024-12-02 13:59:39,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216825485] [2024-12-02 13:59:39,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:59:39,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 13:59:39,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:59:39,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 13:59:39,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2024-12-02 13:59:39,323 INFO L87 Difference]: Start difference. First operand 405027 states and 692622 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 8 states have internal predecessors, (126), 5 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-12-02 13:59:46,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:59:46,804 INFO L93 Difference]: Finished difference Result 407283 states and 696006 transitions. [2024-12-02 13:59:46,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 13:59:46,804 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 8 states have internal predecessors, (126), 5 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 176 [2024-12-02 13:59:46,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:59:47,972 INFO L225 Difference]: With dead ends: 407283 [2024-12-02 13:59:47,973 INFO L226 Difference]: Without dead ends: 405017 [2024-12-02 13:59:48,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-12-02 13:59:48,080 INFO L435 NwaCegarLoop]: 514 mSDtfsCounter, 723 mSDsluCounter, 3511 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 4025 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 13:59:48,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 4025 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 13:59:48,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405017 states. [2024-12-02 13:59:59,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405017 to 405003. [2024-12-02 13:59:59,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405003 states, 343514 states have (on average 1.5893791810523006) internal successors, (545974), 343358 states have internal predecessors, (545974), 61274 states have call successors, (61274), 184 states have call predecessors, (61274), 214 states have return successors, (85314), 61496 states have call predecessors, (85314), 61268 states have call successors, (85314) [2024-12-02 14:00:01,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405003 states to 405003 states and 692562 transitions. [2024-12-02 14:00:01,395 INFO L78 Accepts]: Start accepts. Automaton has 405003 states and 692562 transitions. Word has length 176 [2024-12-02 14:00:01,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:00:01,396 INFO L471 AbstractCegarLoop]: Abstraction has 405003 states and 692562 transitions. [2024-12-02 14:00:01,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 8 states have internal predecessors, (126), 5 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-12-02 14:00:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand 405003 states and 692562 transitions. [2024-12-02 14:00:01,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 14:00:01,902 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:00:01,902 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:00:01,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 14:00:02,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 14:00:02,103 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:00:02,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:00:02,103 INFO L85 PathProgramCache]: Analyzing trace with hash -589553136, now seen corresponding path program 1 times [2024-12-02 14:00:02,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:00:02,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588885670] [2024-12-02 14:00:02,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:00:02,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:00:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:00:02,227 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 14:00:02,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:00:02,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588885670] [2024-12-02 14:00:02,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588885670] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:00:02,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103971551] [2024-12-02 14:00:02,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:00:02,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:00:02,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:00:02,229 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:00:02,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4c905f5-cff0-4d87-82ae-0ccb65f96401/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 14:00:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:00:02,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 14:00:02,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:00:02,706 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 14:00:02,706 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:00:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 14:00:02,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103971551] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:00:02,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:00:02,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-12-02 14:00:02,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221865131] [2024-12-02 14:00:02,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:00:02,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 14:00:02,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:00:02,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 14:00:02,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2024-12-02 14:00:02,946 INFO L87 Difference]: Start difference. First operand 405003 states and 692562 transitions. Second operand has 23 states, 22 states have (on average 12.681818181818182) internal successors, (279), 19 states have internal predecessors, (279), 7 states have call successors, (54), 8 states have call predecessors, (54), 10 states have return successors, (49), 8 states have call predecessors, (49), 7 states have call successors, (49)