./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.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_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8b411c6ac71505d2c5059a06fd3211eebca89561d9ac8be37f9ecc9ff82a7a16 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:00:22,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:00:22,464 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:00:22,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:00:22,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:00:22,497 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:00:22,498 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:00:22,498 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:00:22,498 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:00:22,499 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:00:22,499 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:00:22,499 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:00:22,499 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:00:22,499 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:00:22,500 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:00:22,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:00:22,500 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:00:22,500 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:00:22,500 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:00:22,500 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:00:22,501 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:00:22,501 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:00:22,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:00:22,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:00:22,501 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:00:22,501 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:00:22,501 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:00:22,502 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:00:22,502 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:00:22,502 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:00:22,502 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:00:22,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:00:22,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:00:22,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:00:22,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:00:22,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:00:22,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:00:22,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:00:22,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:00:22,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:00:22,504 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:00:22,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:00:22,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:00:22,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:00:22,504 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:00:22,504 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:00:22,504 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:00:22,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:00:22,505 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_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b411c6ac71505d2c5059a06fd3211eebca89561d9ac8be37f9ecc9ff82a7a16 [2024-11-28 05:00:22,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:00:22,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:00:22,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:00:22,811 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:00:22,811 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:00:22,812 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c [2024-11-28 05:00:25,765 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/data/3c5aec790/47faa6e6c8504037913d73c6b9e98fd8/FLAG45dc2c235 [2024-11-28 05:00:26,057 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:00:26,058 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c [2024-11-28 05:00:26,071 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/data/3c5aec790/47faa6e6c8504037913d73c6b9e98fd8/FLAG45dc2c235 [2024-11-28 05:00:26,087 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/data/3c5aec790/47faa6e6c8504037913d73c6b9e98fd8 [2024-11-28 05:00:26,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:00:26,091 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:00:26,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:00:26,093 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:00:26,098 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:00:26,099 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:00:26" (1/1) ... [2024-11-28 05:00:26,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5187dd21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:26, skipping insertion in model container [2024-11-28 05:00:26,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:00:26" (1/1) ... [2024-11-28 05:00:26,145 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:00:26,332 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_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c[914,927] [2024-11-28 05:00:26,396 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_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c[7115,7128] [2024-11-28 05:00:26,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:00:26,473 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:00:26,485 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_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c[914,927] [2024-11-28 05:00:26,509 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_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c[7115,7128] [2024-11-28 05:00:26,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:00:26,571 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:00:26,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:26 WrapperNode [2024-11-28 05:00:26,572 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:00:26,573 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:00:26,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:00:26,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:00:26,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:26" (1/1) ... [2024-11-28 05:00:26,590 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:26" (1/1) ... [2024-11-28 05:00:26,631 INFO L138 Inliner]: procedures = 63, calls = 73, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 642 [2024-11-28 05:00:26,631 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:00:26,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:00:26,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:00:26,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:00:26,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:26" (1/1) ... [2024-11-28 05:00:26,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:26" (1/1) ... [2024-11-28 05:00:26,651 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:26" (1/1) ... [2024-11-28 05:00:26,668 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 05:00:26,668 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:26" (1/1) ... [2024-11-28 05:00:26,668 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:26" (1/1) ... [2024-11-28 05:00:26,691 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:26" (1/1) ... [2024-11-28 05:00:26,693 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:26" (1/1) ... [2024-11-28 05:00:26,710 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:26" (1/1) ... [2024-11-28 05:00:26,716 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:26" (1/1) ... [2024-11-28 05:00:26,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:26" (1/1) ... [2024-11-28 05:00:26,731 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:00:26,732 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:00:26,732 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:00:26,732 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:00:26,734 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:26" (1/1) ... [2024-11-28 05:00:26,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:00:26,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:26,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:00:26,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:00:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:00:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-28 05:00:26,822 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-28 05:00:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-28 05:00:26,822 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-28 05:00:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-28 05:00:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-28 05:00:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-28 05:00:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-28 05:00:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-28 05:00:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-28 05:00:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-28 05:00:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-28 05:00:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-28 05:00:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-28 05:00:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-28 05:00:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-28 05:00:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-28 05:00:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-28 05:00:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-28 05:00:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-28 05:00:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-28 05:00:26,825 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-28 05:00:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:00:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-28 05:00:26,825 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-28 05:00:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-28 05:00:26,825 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-28 05:00:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:00:26,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:00:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-28 05:00:26,826 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-28 05:00:26,826 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-28 05:00:26,826 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-28 05:00:26,932 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:00:26,935 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:00:27,842 INFO L? ?]: Removed 89 outVars from TransFormulas that were not future-live. [2024-11-28 05:00:27,843 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:00:27,865 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:00:27,865 INFO L312 CfgBuilder]: Removed 24 assume(true) statements. [2024-11-28 05:00:27,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:00:27 BoogieIcfgContainer [2024-11-28 05:00:27,866 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:00:27,868 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:00:27,868 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:00:27,873 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:00:27,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:00:26" (1/3) ... [2024-11-28 05:00:27,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e14c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:00:27, skipping insertion in model container [2024-11-28 05:00:27,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:00:26" (2/3) ... [2024-11-28 05:00:27,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e14c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:00:27, skipping insertion in model container [2024-11-28 05:00:27,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:00:27" (3/3) ... [2024-11-28 05:00:27,876 INFO L128 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.05.cil-2.c [2024-11-28 05:00:27,891 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:00:27,893 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pc_sfifo_2.cil-1+token_ring.05.cil-2.c that has 16 procedures, 310 locations, 1 initial locations, 12 loop locations, and 2 error locations. [2024-11-28 05:00:27,966 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:00:27,979 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;@3f616330, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:00:27,979 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 05:00:27,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 310 states, 259 states have (on average 1.606177606177606) internal successors, (416), 265 states have internal predecessors, (416), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-28 05:00:27,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 05:00:27,996 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:27,997 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:27,997 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:28,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:28,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1241707374, now seen corresponding path program 1 times [2024-11-28 05:00:28,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:28,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617969563] [2024-11-28 05:00:28,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:28,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:28,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:28,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:28,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617969563] [2024-11-28 05:00:28,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617969563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:28,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:28,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:00:28,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136753569] [2024-11-28 05:00:28,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:28,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:00:28,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:28,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:00:28,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:00:28,366 INFO L87 Difference]: Start difference. First operand has 310 states, 259 states have (on average 1.606177606177606) internal successors, (416), 265 states have internal predecessors, (416), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 05:00:28,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:28,500 INFO L93 Difference]: Finished difference Result 598 states and 937 transitions. [2024-11-28 05:00:28,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:00:28,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-28 05:00:28,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:28,519 INFO L225 Difference]: With dead ends: 598 [2024-11-28 05:00:28,520 INFO L226 Difference]: Without dead ends: 299 [2024-11-28 05:00:28,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:00:28,530 INFO L435 NwaCegarLoop]: 452 mSDtfsCounter, 126 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:28,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 775 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:28,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-28 05:00:28,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2024-11-28 05:00:28,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 249 states have (on average 1.5220883534136547) internal successors, (379), 254 states have internal predecessors, (379), 35 states have call successors, (35), 15 states have call predecessors, (35), 13 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-28 05:00:28,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 445 transitions. [2024-11-28 05:00:28,636 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 445 transitions. Word has length 62 [2024-11-28 05:00:28,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:28,638 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 445 transitions. [2024-11-28 05:00:28,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 05:00:28,638 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 445 transitions. [2024-11-28 05:00:28,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 05:00:28,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:28,642 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:28,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:00:28,643 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:28,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:28,643 INFO L85 PathProgramCache]: Analyzing trace with hash -296632656, now seen corresponding path program 1 times [2024-11-28 05:00:28,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:28,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613314479] [2024-11-28 05:00:28,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:28,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:29,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:29,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613314479] [2024-11-28 05:00:29,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613314479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:29,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:29,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:00:29,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608514103] [2024-11-28 05:00:29,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:29,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:00:29,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:29,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:00:29,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:00:29,048 INFO L87 Difference]: Start difference. First operand 299 states and 445 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 05:00:29,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:29,958 INFO L93 Difference]: Finished difference Result 482 states and 705 transitions. [2024-11-28 05:00:29,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:00:29,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-28 05:00:29,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:29,964 INFO L225 Difference]: With dead ends: 482 [2024-11-28 05:00:29,968 INFO L226 Difference]: Without dead ends: 398 [2024-11-28 05:00:29,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:29,970 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 331 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:29,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 963 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:00:29,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-28 05:00:30,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 391. [2024-11-28 05:00:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 321 states have (on average 1.4922118380062306) internal successors, (479), 328 states have internal predecessors, (479), 46 states have call successors, (46), 22 states have call predecessors, (46), 22 states have return successors, (47), 43 states have call predecessors, (47), 42 states have call successors, (47) [2024-11-28 05:00:30,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 572 transitions. [2024-11-28 05:00:30,038 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 572 transitions. Word has length 62 [2024-11-28 05:00:30,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:30,039 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 572 transitions. [2024-11-28 05:00:30,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 05:00:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 572 transitions. [2024-11-28 05:00:30,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 05:00:30,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:30,044 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:30,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:00:30,045 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:30,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:30,047 INFO L85 PathProgramCache]: Analyzing trace with hash -578471375, now seen corresponding path program 1 times [2024-11-28 05:00:30,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:30,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174281704] [2024-11-28 05:00:30,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:30,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:30,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:30,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:30,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174281704] [2024-11-28 05:00:30,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174281704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:30,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:30,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:00:30,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546635770] [2024-11-28 05:00:30,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:30,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:00:30,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:30,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:00:30,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:30,331 INFO L87 Difference]: Start difference. First operand 391 states and 572 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 05:00:31,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:31,301 INFO L93 Difference]: Finished difference Result 696 states and 990 transitions. [2024-11-28 05:00:31,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:00:31,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-28 05:00:31,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:31,308 INFO L225 Difference]: With dead ends: 696 [2024-11-28 05:00:31,308 INFO L226 Difference]: Without dead ends: 527 [2024-11-28 05:00:31,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:00:31,313 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 659 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:31,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1021 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:00:31,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-11-28 05:00:31,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 483. [2024-11-28 05:00:31,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 393 states have (on average 1.470737913486005) internal successors, (578), 402 states have internal predecessors, (578), 57 states have call successors, (57), 29 states have call predecessors, (57), 31 states have return successors, (66), 55 states have call predecessors, (66), 53 states have call successors, (66) [2024-11-28 05:00:31,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 701 transitions. [2024-11-28 05:00:31,393 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 701 transitions. Word has length 62 [2024-11-28 05:00:31,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:31,393 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 701 transitions. [2024-11-28 05:00:31,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 05:00:31,394 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 701 transitions. [2024-11-28 05:00:31,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 05:00:31,398 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:31,398 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:31,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:00:31,399 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:31,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:31,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1360690671, now seen corresponding path program 1 times [2024-11-28 05:00:31,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:31,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847823191] [2024-11-28 05:00:31,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:31,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:31,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:31,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847823191] [2024-11-28 05:00:31,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847823191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:31,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:31,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:00:31,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661361653] [2024-11-28 05:00:31,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:31,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:00:31,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:31,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:00:31,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:31,566 INFO L87 Difference]: Start difference. First operand 483 states and 701 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 05:00:31,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:31,638 INFO L93 Difference]: Finished difference Result 743 states and 1062 transitions. [2024-11-28 05:00:31,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:00:31,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2024-11-28 05:00:31,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:31,642 INFO L225 Difference]: With dead ends: 743 [2024-11-28 05:00:31,642 INFO L226 Difference]: Without dead ends: 488 [2024-11-28 05:00:31,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:31,645 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 0 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:31,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2205 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:31,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2024-11-28 05:00:31,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2024-11-28 05:00:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 397 states have (on average 1.4609571788413098) internal successors, (580), 406 states have internal predecessors, (580), 57 states have call successors, (57), 29 states have call predecessors, (57), 32 states have return successors, (67), 56 states have call predecessors, (67), 53 states have call successors, (67) [2024-11-28 05:00:31,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 704 transitions. [2024-11-28 05:00:31,705 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 704 transitions. Word has length 62 [2024-11-28 05:00:31,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:31,706 INFO L471 AbstractCegarLoop]: Abstraction has 488 states and 704 transitions. [2024-11-28 05:00:31,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 05:00:31,707 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 704 transitions. [2024-11-28 05:00:31,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 05:00:31,709 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:31,709 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:31,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:00:31,709 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:31,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:31,710 INFO L85 PathProgramCache]: Analyzing trace with hash 516685169, now seen corresponding path program 1 times [2024-11-28 05:00:31,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:31,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344504035] [2024-11-28 05:00:31,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:31,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:31,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:31,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344504035] [2024-11-28 05:00:31,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344504035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:31,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:31,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:00:31,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395349909] [2024-11-28 05:00:31,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:31,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:00:31,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:31,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:00:31,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:31,847 INFO L87 Difference]: Start difference. First operand 488 states and 704 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 05:00:31,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:31,937 INFO L93 Difference]: Finished difference Result 763 states and 1080 transitions. [2024-11-28 05:00:31,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:00:31,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2024-11-28 05:00:31,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:31,943 INFO L225 Difference]: With dead ends: 763 [2024-11-28 05:00:31,943 INFO L226 Difference]: Without dead ends: 503 [2024-11-28 05:00:31,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:31,945 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 0 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:31,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2205 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:31,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-28 05:00:32,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2024-11-28 05:00:32,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 409 states have (on average 1.4474327628361858) internal successors, (592), 418 states have internal predecessors, (592), 57 states have call successors, (57), 29 states have call predecessors, (57), 35 states have return successors, (70), 59 states have call predecessors, (70), 53 states have call successors, (70) [2024-11-28 05:00:32,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 719 transitions. [2024-11-28 05:00:32,010 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 719 transitions. Word has length 62 [2024-11-28 05:00:32,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:32,010 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 719 transitions. [2024-11-28 05:00:32,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 05:00:32,011 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 719 transitions. [2024-11-28 05:00:32,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 05:00:32,015 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:32,016 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:32,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:00:32,016 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:32,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:32,016 INFO L85 PathProgramCache]: Analyzing trace with hash 578724783, now seen corresponding path program 1 times [2024-11-28 05:00:32,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:32,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632236888] [2024-11-28 05:00:32,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:32,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:32,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:32,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:32,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632236888] [2024-11-28 05:00:32,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632236888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:32,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:32,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:00:32,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958945435] [2024-11-28 05:00:32,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:32,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:00:32,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:32,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:00:32,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:00:32,132 INFO L87 Difference]: Start difference. First operand 503 states and 719 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 05:00:32,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:32,711 INFO L93 Difference]: Finished difference Result 1048 states and 1449 transitions. [2024-11-28 05:00:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:00:32,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-28 05:00:32,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:32,718 INFO L225 Difference]: With dead ends: 1048 [2024-11-28 05:00:32,718 INFO L226 Difference]: Without dead ends: 776 [2024-11-28 05:00:32,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:00:32,722 INFO L435 NwaCegarLoop]: 241 mSDtfsCounter, 610 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:32,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 494 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:00:32,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2024-11-28 05:00:32,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 772. [2024-11-28 05:00:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 614 states have (on average 1.3957654723127035) internal successors, (857), 630 states have internal predecessors, (857), 91 states have call successors, (91), 50 states have call predecessors, (91), 65 states have return successors, (128), 98 states have call predecessors, (128), 87 states have call successors, (128) [2024-11-28 05:00:32,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1076 transitions. [2024-11-28 05:00:32,827 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1076 transitions. Word has length 62 [2024-11-28 05:00:32,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:32,827 INFO L471 AbstractCegarLoop]: Abstraction has 772 states and 1076 transitions. [2024-11-28 05:00:32,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 05:00:32,828 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1076 transitions. [2024-11-28 05:00:32,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 05:00:32,830 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:32,830 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:32,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:00:32,834 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:32,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:32,834 INFO L85 PathProgramCache]: Analyzing trace with hash -331749064, now seen corresponding path program 1 times [2024-11-28 05:00:32,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:32,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133745189] [2024-11-28 05:00:32,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:32,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:32,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:32,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:32,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133745189] [2024-11-28 05:00:32,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133745189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:32,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:32,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:00:32,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532281724] [2024-11-28 05:00:32,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:32,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:00:32,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:32,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:00:32,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:00:32,902 INFO L87 Difference]: Start difference. First operand 772 states and 1076 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 05:00:33,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:33,064 INFO L93 Difference]: Finished difference Result 1793 states and 2443 transitions. [2024-11-28 05:00:33,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:00:33,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2024-11-28 05:00:33,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:33,073 INFO L225 Difference]: With dead ends: 1793 [2024-11-28 05:00:33,073 INFO L226 Difference]: Without dead ends: 1231 [2024-11-28 05:00:33,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:00:33,080 INFO L435 NwaCegarLoop]: 441 mSDtfsCounter, 101 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:33,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 852 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:33,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2024-11-28 05:00:33,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1208. [2024-11-28 05:00:33,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 952 states have (on average 1.3644957983193278) internal successors, (1299), 971 states have internal predecessors, (1299), 134 states have call successors, (134), 92 states have call predecessors, (134), 120 states have return successors, (196), 151 states have call predecessors, (196), 130 states have call successors, (196) [2024-11-28 05:00:33,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1629 transitions. [2024-11-28 05:00:33,235 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1629 transitions. Word has length 63 [2024-11-28 05:00:33,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:33,236 INFO L471 AbstractCegarLoop]: Abstraction has 1208 states and 1629 transitions. [2024-11-28 05:00:33,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 05:00:33,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1629 transitions. [2024-11-28 05:00:33,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 05:00:33,241 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:33,241 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:33,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:00:33,242 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:33,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:33,242 INFO L85 PathProgramCache]: Analyzing trace with hash -410692470, now seen corresponding path program 1 times [2024-11-28 05:00:33,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:33,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139941941] [2024-11-28 05:00:33,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:33,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:33,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:33,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:33,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139941941] [2024-11-28 05:00:33,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139941941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:33,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:33,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:00:33,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291553722] [2024-11-28 05:00:33,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:33,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:00:33,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:33,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:00:33,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:00:33,306 INFO L87 Difference]: Start difference. First operand 1208 states and 1629 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 05:00:33,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:33,551 INFO L93 Difference]: Finished difference Result 3060 states and 4072 transitions. [2024-11-28 05:00:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:00:33,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2024-11-28 05:00:33,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:33,563 INFO L225 Difference]: With dead ends: 3060 [2024-11-28 05:00:33,564 INFO L226 Difference]: Without dead ends: 2082 [2024-11-28 05:00:33,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:00:33,567 INFO L435 NwaCegarLoop]: 443 mSDtfsCounter, 416 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:33,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 547 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:33,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2024-11-28 05:00:33,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 2048. [2024-11-28 05:00:33,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 1592 states have (on average 1.321608040201005) internal successors, (2104), 1625 states have internal predecessors, (2104), 232 states have call successors, (232), 176 states have call predecessors, (232), 222 states have return successors, (340), 253 states have call predecessors, (340), 228 states have call successors, (340) [2024-11-28 05:00:33,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 2676 transitions. [2024-11-28 05:00:33,787 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 2676 transitions. Word has length 64 [2024-11-28 05:00:33,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:33,789 INFO L471 AbstractCegarLoop]: Abstraction has 2048 states and 2676 transitions. [2024-11-28 05:00:33,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 05:00:33,790 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 2676 transitions. [2024-11-28 05:00:33,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 05:00:33,795 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:33,795 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:33,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:00:33,796 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:33,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:33,796 INFO L85 PathProgramCache]: Analyzing trace with hash 700390615, now seen corresponding path program 1 times [2024-11-28 05:00:33,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:33,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883221276] [2024-11-28 05:00:33,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:33,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:33,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:33,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883221276] [2024-11-28 05:00:33,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883221276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:33,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:33,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:00:33,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423507061] [2024-11-28 05:00:33,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:33,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:00:33,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:33,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:00:33,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:00:33,947 INFO L87 Difference]: Start difference. First operand 2048 states and 2676 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 05:00:34,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:34,502 INFO L93 Difference]: Finished difference Result 2813 states and 3630 transitions. [2024-11-28 05:00:34,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:00:34,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2024-11-28 05:00:34,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:34,521 INFO L225 Difference]: With dead ends: 2813 [2024-11-28 05:00:34,521 INFO L226 Difference]: Without dead ends: 2810 [2024-11-28 05:00:34,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:00:34,523 INFO L435 NwaCegarLoop]: 448 mSDtfsCounter, 828 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:34,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 534 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:00:34,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2024-11-28 05:00:34,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 2773. [2024-11-28 05:00:34,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2773 states, 2144 states have (on average 1.3055037313432836) internal successors, (2799), 2187 states have internal predecessors, (2799), 313 states have call successors, (313), 246 states have call predecessors, (313), 314 states have return successors, (463), 346 states have call predecessors, (463), 310 states have call successors, (463) [2024-11-28 05:00:34,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2773 states to 2773 states and 3575 transitions. [2024-11-28 05:00:34,927 INFO L78 Accepts]: Start accepts. Automaton has 2773 states and 3575 transitions. Word has length 68 [2024-11-28 05:00:34,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:34,928 INFO L471 AbstractCegarLoop]: Abstraction has 2773 states and 3575 transitions. [2024-11-28 05:00:34,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 05:00:34,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2773 states and 3575 transitions. [2024-11-28 05:00:34,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 05:00:34,933 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:34,933 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:34,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:00:34,933 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:34,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:34,935 INFO L85 PathProgramCache]: Analyzing trace with hash 236334263, now seen corresponding path program 1 times [2024-11-28 05:00:34,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:34,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001895071] [2024-11-28 05:00:34,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:34,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:35,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:35,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001895071] [2024-11-28 05:00:35,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001895071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:35,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472813966] [2024-11-28 05:00:35,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:35,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:35,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:35,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:00:35,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:00:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:35,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:00:35,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:00:35,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:35,634 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:00:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:35,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472813966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:00:35,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:00:35,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-28 05:00:35,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092092332] [2024-11-28 05:00:35,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:00:35,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:00:35,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:35,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:00:35,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:00:35,766 INFO L87 Difference]: Start difference. First operand 2773 states and 3575 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 05:00:36,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:36,872 INFO L93 Difference]: Finished difference Result 6416 states and 8222 transitions. [2024-11-28 05:00:36,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:00:36,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 69 [2024-11-28 05:00:36,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:36,916 INFO L225 Difference]: With dead ends: 6416 [2024-11-28 05:00:36,916 INFO L226 Difference]: Without dead ends: 6413 [2024-11-28 05:00:36,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:00:36,920 INFO L435 NwaCegarLoop]: 634 mSDtfsCounter, 1159 mSDsluCounter, 1173 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:36,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 1807 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 05:00:36,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6413 states. [2024-11-28 05:00:37,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6413 to 4456. [2024-11-28 05:00:37,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 3447 states have (on average 1.2996808819263128) internal successors, (4480), 3514 states have internal predecessors, (4480), 493 states have call successors, (493), 400 states have call predecessors, (493), 514 states have return successors, (741), 548 states have call predecessors, (741), 490 states have call successors, (741) [2024-11-28 05:00:37,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 5714 transitions. [2024-11-28 05:00:37,453 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 5714 transitions. Word has length 69 [2024-11-28 05:00:37,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:37,454 INFO L471 AbstractCegarLoop]: Abstraction has 4456 states and 5714 transitions. [2024-11-28 05:00:37,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 05:00:37,454 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 5714 transitions. [2024-11-28 05:00:37,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 05:00:37,458 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:37,458 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:37,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:00:37,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2114a44-06a7-496d-8bd9-d0bcc3bdbb99/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 05:00:37,663 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:37,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:37,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1735723989, now seen corresponding path program 2 times [2024-11-28 05:00:37,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:37,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923501183] [2024-11-28 05:00:37,664 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:00:37,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:37,685 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:00:37,685 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:00:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:37,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:37,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923501183] [2024-11-28 05:00:37,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923501183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:37,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:37,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:00:37,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161694270] [2024-11-28 05:00:37,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:37,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:00:37,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:37,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:00:37,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:00:37,740 INFO L87 Difference]: Start difference. First operand 4456 states and 5714 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 05:00:38,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:38,044 INFO L93 Difference]: Finished difference Result 6766 states and 8694 transitions. [2024-11-28 05:00:38,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:00:38,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2024-11-28 05:00:38,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:38,089 INFO L225 Difference]: With dead ends: 6766 [2024-11-28 05:00:38,089 INFO L226 Difference]: Without dead ends: 2953 [2024-11-28 05:00:38,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:00:38,097 INFO L435 NwaCegarLoop]: 532 mSDtfsCounter, 415 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:38,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 644 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:38,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2024-11-28 05:00:38,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 2933. [2024-11-28 05:00:38,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2272 states have (on average 1.2838908450704225) internal successors, (2917), 2317 states have internal predecessors, (2917), 329 states have call successors, (329), 260 states have call predecessors, (329), 330 states have return successors, (471), 362 states have call predecessors, (471), 326 states have call successors, (471) [2024-11-28 05:00:38,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 3717 transitions. [2024-11-28 05:00:38,436 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 3717 transitions. Word has length 71 [2024-11-28 05:00:38,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:38,436 INFO L471 AbstractCegarLoop]: Abstraction has 2933 states and 3717 transitions. [2024-11-28 05:00:38,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 05:00:38,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 3717 transitions. [2024-11-28 05:00:38,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-28 05:00:38,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:38,443 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 05:00:38,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 05:00:38,443 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:38,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:38,444 INFO L85 PathProgramCache]: Analyzing trace with hash 291657019, now seen corresponding path program 1 times [2024-11-28 05:00:38,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:38,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578503363] [2024-11-28 05:00:38,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:38,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 05:00:38,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:38,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578503363] [2024-11-28 05:00:38,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578503363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:38,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:38,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:00:38,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923384269] [2024-11-28 05:00:38,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:38,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:00:38,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:38,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:00:38,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:38,607 INFO L87 Difference]: Start difference. First operand 2933 states and 3717 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 05:00:40,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:40,432 INFO L93 Difference]: Finished difference Result 8625 states and 10788 transitions. [2024-11-28 05:00:40,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:00:40,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 80 [2024-11-28 05:00:40,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:40,458 INFO L225 Difference]: With dead ends: 8625 [2024-11-28 05:00:40,459 INFO L226 Difference]: Without dead ends: 4620 [2024-11-28 05:00:40,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-28 05:00:40,468 INFO L435 NwaCegarLoop]: 310 mSDtfsCounter, 624 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:40,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1322 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 05:00:40,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4620 states. [2024-11-28 05:00:40,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4620 to 4368. [2024-11-28 05:00:40,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4368 states, 3365 states have (on average 1.2567607726597325) internal successors, (4229), 3443 states have internal predecessors, (4229), 485 states have call successors, (485), 395 states have call predecessors, (485), 516 states have return successors, (746), 536 states have call predecessors, (746), 482 states have call successors, (746) [2024-11-28 05:00:40,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4368 states to 4368 states and 5460 transitions. [2024-11-28 05:00:40,950 INFO L78 Accepts]: Start accepts. Automaton has 4368 states and 5460 transitions. Word has length 80 [2024-11-28 05:00:40,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:40,951 INFO L471 AbstractCegarLoop]: Abstraction has 4368 states and 5460 transitions. [2024-11-28 05:00:40,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 05:00:40,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4368 states and 5460 transitions. [2024-11-28 05:00:40,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 05:00:40,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:40,956 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 05:00:40,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 05:00:40,957 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:40,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:40,957 INFO L85 PathProgramCache]: Analyzing trace with hash -442414373, now seen corresponding path program 1 times [2024-11-28 05:00:40,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:40,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367602748] [2024-11-28 05:00:40,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:40,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:41,141 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:00:41,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:41,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367602748] [2024-11-28 05:00:41,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367602748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:41,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:41,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:00:41,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833573566] [2024-11-28 05:00:41,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:41,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:00:41,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:41,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:00:41,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:00:41,144 INFO L87 Difference]: Start difference. First operand 4368 states and 5460 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 05:00:42,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:42,785 INFO L93 Difference]: Finished difference Result 7954 states and 9870 transitions. [2024-11-28 05:00:42,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 05:00:42,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2024-11-28 05:00:42,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:42,816 INFO L225 Difference]: With dead ends: 7954 [2024-11-28 05:00:42,816 INFO L226 Difference]: Without dead ends: 4025 [2024-11-28 05:00:42,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:00:42,829 INFO L435 NwaCegarLoop]: 326 mSDtfsCounter, 1308 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:42,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 1398 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 05:00:42,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2024-11-28 05:00:43,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3731. [2024-11-28 05:00:43,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3731 states, 2887 states have (on average 1.2469691721510219) internal successors, (3600), 2947 states have internal predecessors, (3600), 413 states have call successors, (413), 332 states have call predecessors, (413), 429 states have return successors, (573), 458 states have call predecessors, (573), 410 states have call successors, (573) [2024-11-28 05:00:43,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 4586 transitions. [2024-11-28 05:00:43,421 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 4586 transitions. Word has length 86 [2024-11-28 05:00:43,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:43,421 INFO L471 AbstractCegarLoop]: Abstraction has 3731 states and 4586 transitions. [2024-11-28 05:00:43,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 05:00:43,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 4586 transitions. [2024-11-28 05:00:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 05:00:43,428 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:43,429 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:43,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 05:00:43,429 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:43,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:43,430 INFO L85 PathProgramCache]: Analyzing trace with hash -891775727, now seen corresponding path program 1 times [2024-11-28 05:00:43,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:43,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059422095] [2024-11-28 05:00:43,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:43,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:43,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:43,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:43,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059422095] [2024-11-28 05:00:43,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059422095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:43,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:43,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:00:43,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657427230] [2024-11-28 05:00:43,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:43,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:00:43,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:43,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:00:43,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:00:43,505 INFO L87 Difference]: Start difference. First operand 3731 states and 4586 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:00:43,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:43,870 INFO L93 Difference]: Finished difference Result 3932 states and 4896 transitions. [2024-11-28 05:00:43,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:00:43,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2024-11-28 05:00:43,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:43,887 INFO L225 Difference]: With dead ends: 3932 [2024-11-28 05:00:43,888 INFO L226 Difference]: Without dead ends: 3731 [2024-11-28 05:00:43,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:00:43,891 INFO L435 NwaCegarLoop]: 441 mSDtfsCounter, 312 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:43,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 566 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:00:43,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2024-11-28 05:00:44,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 3731. [2024-11-28 05:00:44,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3731 states, 2887 states have (on average 1.2466227918254242) internal successors, (3599), 2947 states have internal predecessors, (3599), 413 states have call successors, (413), 332 states have call predecessors, (413), 429 states have return successors, (573), 458 states have call predecessors, (573), 410 states have call successors, (573) [2024-11-28 05:00:44,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 4585 transitions. [2024-11-28 05:00:44,261 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 4585 transitions. Word has length 100 [2024-11-28 05:00:44,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:44,262 INFO L471 AbstractCegarLoop]: Abstraction has 3731 states and 4585 transitions. [2024-11-28 05:00:44,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:00:44,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 4585 transitions. [2024-11-28 05:00:44,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 05:00:44,267 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:44,267 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:44,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 05:00:44,267 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:44,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:44,268 INFO L85 PathProgramCache]: Analyzing trace with hash -863275437, now seen corresponding path program 1 times [2024-11-28 05:00:44,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:44,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002622826] [2024-11-28 05:00:44,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:44,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:44,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:44,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002622826] [2024-11-28 05:00:44,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002622826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:44,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:44,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:00:44,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009653037] [2024-11-28 05:00:44,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:44,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:00:44,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:44,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:00:44,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:00:44,382 INFO L87 Difference]: Start difference. First operand 3731 states and 4585 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:00:45,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:45,328 INFO L93 Difference]: Finished difference Result 4139 states and 5221 transitions. [2024-11-28 05:00:45,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:00:45,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2024-11-28 05:00:45,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:45,346 INFO L225 Difference]: With dead ends: 4139 [2024-11-28 05:00:45,347 INFO L226 Difference]: Without dead ends: 3945 [2024-11-28 05:00:45,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:45,351 INFO L435 NwaCegarLoop]: 329 mSDtfsCounter, 729 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:45,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 1086 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:00:45,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3945 states. [2024-11-28 05:00:45,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3945 to 3928. [2024-11-28 05:00:45,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3928 states, 3063 states have (on average 1.2654260528893242) internal successors, (3876), 3124 states have internal predecessors, (3876), 427 states have call successors, (427), 338 states have call predecessors, (427), 436 states have return successors, (588), 472 states have call predecessors, (588), 424 states have call successors, (588) [2024-11-28 05:00:45,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 4891 transitions. [2024-11-28 05:00:45,738 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 4891 transitions. Word has length 100 [2024-11-28 05:00:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:45,739 INFO L471 AbstractCegarLoop]: Abstraction has 3928 states and 4891 transitions. [2024-11-28 05:00:45,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:00:45,739 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 4891 transitions. [2024-11-28 05:00:45,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 05:00:45,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:45,743 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:45,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:00:45,744 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:45,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:45,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1575193167, now seen corresponding path program 1 times [2024-11-28 05:00:45,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:45,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236710981] [2024-11-28 05:00:45,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:45,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:45,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:45,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236710981] [2024-11-28 05:00:45,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236710981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:45,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:45,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:00:45,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613687183] [2024-11-28 05:00:45,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:45,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:00:45,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:45,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:00:45,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:45,919 INFO L87 Difference]: Start difference. First operand 3928 states and 4891 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:00:47,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:47,138 INFO L93 Difference]: Finished difference Result 4563 states and 5884 transitions. [2024-11-28 05:00:47,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:00:47,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2024-11-28 05:00:47,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:47,159 INFO L225 Difference]: With dead ends: 4563 [2024-11-28 05:00:47,159 INFO L226 Difference]: Without dead ends: 4172 [2024-11-28 05:00:47,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:00:47,163 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 721 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:47,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1827 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:00:47,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2024-11-28 05:00:47,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 4111. [2024-11-28 05:00:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4111 states, 3225 states have (on average 1.2790697674418605) internal successors, (4125), 3287 states have internal predecessors, (4125), 441 states have call successors, (441), 344 states have call predecessors, (441), 443 states have return successors, (605), 487 states have call predecessors, (605), 438 states have call successors, (605) [2024-11-28 05:00:47,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4111 states to 4111 states and 5171 transitions. [2024-11-28 05:00:47,770 INFO L78 Accepts]: Start accepts. Automaton has 4111 states and 5171 transitions. Word has length 100 [2024-11-28 05:00:47,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:47,770 INFO L471 AbstractCegarLoop]: Abstraction has 4111 states and 5171 transitions. [2024-11-28 05:00:47,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:00:47,771 INFO L276 IsEmpty]: Start isEmpty. Operand 4111 states and 5171 transitions. [2024-11-28 05:00:47,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 05:00:47,775 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:47,775 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:47,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 05:00:47,775 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:47,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:47,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1153016179, now seen corresponding path program 1 times [2024-11-28 05:00:47,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:47,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467798441] [2024-11-28 05:00:47,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:47,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:47,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:47,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:47,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467798441] [2024-11-28 05:00:47,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467798441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:47,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:47,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:00:47,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044994931] [2024-11-28 05:00:47,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:47,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:00:47,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:47,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:00:47,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:47,932 INFO L87 Difference]: Start difference. First operand 4111 states and 5171 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:00:49,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:49,188 INFO L93 Difference]: Finished difference Result 5137 states and 6773 transitions. [2024-11-28 05:00:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:00:49,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2024-11-28 05:00:49,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:49,210 INFO L225 Difference]: With dead ends: 5137 [2024-11-28 05:00:49,210 INFO L226 Difference]: Without dead ends: 4563 [2024-11-28 05:00:49,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:00:49,214 INFO L435 NwaCegarLoop]: 463 mSDtfsCounter, 716 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:49,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1811 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:00:49,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4563 states. [2024-11-28 05:00:49,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4563 to 4496. [2024-11-28 05:00:49,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4496 states, 3566 states have (on average 1.3051037577117217) internal successors, (4654), 3632 states have internal predecessors, (4654), 469 states have call successors, (469), 356 states have call predecessors, (469), 459 states have return successors, (645), 517 states have call predecessors, (645), 466 states have call successors, (645) [2024-11-28 05:00:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4496 states to 4496 states and 5768 transitions. [2024-11-28 05:00:49,718 INFO L78 Accepts]: Start accepts. Automaton has 4496 states and 5768 transitions. Word has length 100 [2024-11-28 05:00:49,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:49,719 INFO L471 AbstractCegarLoop]: Abstraction has 4496 states and 5768 transitions. [2024-11-28 05:00:49,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:00:49,719 INFO L276 IsEmpty]: Start isEmpty. Operand 4496 states and 5768 transitions. [2024-11-28 05:00:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 05:00:49,729 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:49,730 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:49,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 05:00:49,734 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:49,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:49,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2084113039, now seen corresponding path program 1 times [2024-11-28 05:00:49,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:49,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736323875] [2024-11-28 05:00:49,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:49,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:49,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:49,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736323875] [2024-11-28 05:00:49,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736323875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:49,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:49,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:00:49,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858764735] [2024-11-28 05:00:49,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:49,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:00:49,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:49,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:00:49,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:49,919 INFO L87 Difference]: Start difference. First operand 4496 states and 5768 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:00:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:51,169 INFO L93 Difference]: Finished difference Result 6356 states and 8696 transitions. [2024-11-28 05:00:51,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:00:51,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2024-11-28 05:00:51,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:51,191 INFO L225 Difference]: With dead ends: 6356 [2024-11-28 05:00:51,191 INFO L226 Difference]: Without dead ends: 5397 [2024-11-28 05:00:51,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:00:51,196 INFO L435 NwaCegarLoop]: 316 mSDtfsCounter, 732 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:51,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1322 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:00:51,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5397 states. [2024-11-28 05:00:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5397 to 5317. [2024-11-28 05:00:51,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5317 states, 4293 states have (on average 1.3496389471232237) internal successors, (5794), 4373 states have internal predecessors, (5794), 525 states have call successors, (525), 380 states have call predecessors, (525), 497 states have return successors, (749), 577 states have call predecessors, (749), 522 states have call successors, (749) [2024-11-28 05:00:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5317 states to 5317 states and 7068 transitions. [2024-11-28 05:00:51,822 INFO L78 Accepts]: Start accepts. Automaton has 5317 states and 7068 transitions. Word has length 100 [2024-11-28 05:00:51,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:51,823 INFO L471 AbstractCegarLoop]: Abstraction has 5317 states and 7068 transitions. [2024-11-28 05:00:51,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:00:51,824 INFO L276 IsEmpty]: Start isEmpty. Operand 5317 states and 7068 transitions. [2024-11-28 05:00:51,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 05:00:51,830 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:51,830 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:51,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 05:00:51,830 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:51,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:51,831 INFO L85 PathProgramCache]: Analyzing trace with hash 941610573, now seen corresponding path program 1 times [2024-11-28 05:00:51,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:51,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356632880] [2024-11-28 05:00:51,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:51,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:51,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:51,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356632880] [2024-11-28 05:00:51,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356632880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:51,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:51,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:00:51,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906293332] [2024-11-28 05:00:51,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:51,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:00:51,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:51,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:00:51,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:51,964 INFO L87 Difference]: Start difference. First operand 5317 states and 7068 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:00:53,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:53,617 INFO L93 Difference]: Finished difference Result 8979 states and 12954 transitions. [2024-11-28 05:00:53,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:00:53,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2024-11-28 05:00:53,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:53,643 INFO L225 Difference]: With dead ends: 8979 [2024-11-28 05:00:53,643 INFO L226 Difference]: Without dead ends: 7199 [2024-11-28 05:00:53,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:00:53,649 INFO L435 NwaCegarLoop]: 457 mSDtfsCounter, 706 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:53,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 1787 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:00:53,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7199 states. [2024-11-28 05:00:54,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7199 to 7094. [2024-11-28 05:00:54,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7094 states, 5864 states have (on average 1.4130286493860846) internal successors, (8286), 5990 states have internal predecessors, (8286), 637 states have call successors, (637), 428 states have call predecessors, (637), 591 states have return successors, (1053), 697 states have call predecessors, (1053), 634 states have call successors, (1053) [2024-11-28 05:00:54,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7094 states to 7094 states and 9976 transitions. [2024-11-28 05:00:54,401 INFO L78 Accepts]: Start accepts. Automaton has 7094 states and 9976 transitions. Word has length 100 [2024-11-28 05:00:54,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:54,402 INFO L471 AbstractCegarLoop]: Abstraction has 7094 states and 9976 transitions. [2024-11-28 05:00:54,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:00:54,402 INFO L276 IsEmpty]: Start isEmpty. Operand 7094 states and 9976 transitions. [2024-11-28 05:00:54,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 05:00:54,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:54,409 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:54,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 05:00:54,410 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:54,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:54,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1181850319, now seen corresponding path program 1 times [2024-11-28 05:00:54,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:54,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656378043] [2024-11-28 05:00:54,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:54,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:54,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:54,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656378043] [2024-11-28 05:00:54,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656378043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:54,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:54,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:00:54,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939444151] [2024-11-28 05:00:54,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:54,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:00:54,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:54,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:00:54,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:54,545 INFO L87 Difference]: Start difference. First operand 7094 states and 9976 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:00:56,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:56,336 INFO L93 Difference]: Finished difference Result 15346 states and 23645 transitions. [2024-11-28 05:00:56,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:00:56,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2024-11-28 05:00:56,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:56,379 INFO L225 Difference]: With dead ends: 15346 [2024-11-28 05:00:56,380 INFO L226 Difference]: Without dead ends: 11789 [2024-11-28 05:00:56,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:00:56,391 INFO L435 NwaCegarLoop]: 452 mSDtfsCounter, 754 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:56,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 1762 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:00:56,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11789 states. [2024-11-28 05:00:57,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11789 to 10951. [2024-11-28 05:00:57,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10951 states, 9271 states have (on average 1.4852766691834753) internal successors, (13770), 9543 states have internal predecessors, (13770), 845 states have call successors, (845), 524 states have call predecessors, (845), 833 states have return successors, (2029), 921 states have call predecessors, (2029), 842 states have call successors, (2029) [2024-11-28 05:00:57,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10951 states to 10951 states and 16644 transitions. [2024-11-28 05:00:57,360 INFO L78 Accepts]: Start accepts. Automaton has 10951 states and 16644 transitions. Word has length 100 [2024-11-28 05:00:57,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:57,360 INFO L471 AbstractCegarLoop]: Abstraction has 10951 states and 16644 transitions. [2024-11-28 05:00:57,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:00:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 10951 states and 16644 transitions. [2024-11-28 05:00:57,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 05:00:57,370 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:57,370 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:57,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 05:00:57,370 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:57,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:57,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2020883981, now seen corresponding path program 1 times [2024-11-28 05:00:57,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:57,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138331815] [2024-11-28 05:00:57,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:00:57,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:00:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:00:57,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:57,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138331815] [2024-11-28 05:00:57,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138331815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:00:57,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:00:57,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:00:57,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843459501] [2024-11-28 05:00:57,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:00:57,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:00:57,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:00:57,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:00:57,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:00:57,495 INFO L87 Difference]: Start difference. First operand 10951 states and 16644 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:00:59,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:59,889 INFO L93 Difference]: Finished difference Result 28269 states and 47211 transitions. [2024-11-28 05:00:59,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:00:59,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2024-11-28 05:00:59,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:59,970 INFO L225 Difference]: With dead ends: 28269 [2024-11-28 05:00:59,970 INFO L226 Difference]: Without dead ends: 20855 [2024-11-28 05:00:59,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:00:59,994 INFO L435 NwaCegarLoop]: 448 mSDtfsCounter, 829 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:59,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 1746 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 05:01:00,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20855 states. [2024-11-28 05:01:01,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20855 to 19220. [2024-11-28 05:01:01,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19220 states, 16494 states have (on average 1.542500303140536) internal successors, (25442), 17220 states have internal predecessors, (25442), 1245 states have call successors, (1245), 716 states have call predecessors, (1245), 1479 states have return successors, (5501), 1353 states have call predecessors, (5501), 1242 states have call successors, (5501) [2024-11-28 05:01:01,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19220 states to 19220 states and 32188 transitions. [2024-11-28 05:01:01,759 INFO L78 Accepts]: Start accepts. Automaton has 19220 states and 32188 transitions. Word has length 100 [2024-11-28 05:01:01,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:01,759 INFO L471 AbstractCegarLoop]: Abstraction has 19220 states and 32188 transitions. [2024-11-28 05:01:01,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:01:01,759 INFO L276 IsEmpty]: Start isEmpty. Operand 19220 states and 32188 transitions. [2024-11-28 05:01:01,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 05:01:01,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:01,768 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:01,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 05:01:01,769 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:01,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:01,769 INFO L85 PathProgramCache]: Analyzing trace with hash 2047949583, now seen corresponding path program 1 times [2024-11-28 05:01:01,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:01,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645277145] [2024-11-28 05:01:01,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:01,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:01,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:01:01,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:01,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645277145] [2024-11-28 05:01:01,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645277145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:01,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:01:01,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:01:01,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852759049] [2024-11-28 05:01:01,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:01,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:01:01,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:01,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:01:01,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:01:01,894 INFO L87 Difference]: Start difference. First operand 19220 states and 32188 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:01:05,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:05,127 INFO L93 Difference]: Finished difference Result 56028 states and 104065 transitions. [2024-11-28 05:01:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:01:05,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2024-11-28 05:01:05,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:05,304 INFO L225 Difference]: With dead ends: 56028 [2024-11-28 05:01:05,304 INFO L226 Difference]: Without dead ends: 40345 [2024-11-28 05:01:05,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:01:05,356 INFO L435 NwaCegarLoop]: 446 mSDtfsCounter, 724 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:05,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1738 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 05:01:05,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40345 states. [2024-11-28 05:01:08,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40345 to 38137. [2024-11-28 05:01:08,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38137 states, 32865 states have (on average 1.5867944621938233) internal successors, (52150), 34985 states have internal predecessors, (52150), 2013 states have call successors, (2013), 1100 states have call predecessors, (2013), 3257 states have return successors, (18557), 2185 states have call predecessors, (18557), 2010 states have call successors, (18557) [2024-11-28 05:01:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38137 states to 38137 states and 72720 transitions. [2024-11-28 05:01:08,377 INFO L78 Accepts]: Start accepts. Automaton has 38137 states and 72720 transitions. Word has length 100 [2024-11-28 05:01:08,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:08,377 INFO L471 AbstractCegarLoop]: Abstraction has 38137 states and 72720 transitions. [2024-11-28 05:01:08,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:01:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 38137 states and 72720 transitions. [2024-11-28 05:01:08,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 05:01:08,394 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:08,395 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:08,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 05:01:08,395 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:08,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:08,396 INFO L85 PathProgramCache]: Analyzing trace with hash -29387315, now seen corresponding path program 1 times [2024-11-28 05:01:08,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:08,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166753745] [2024-11-28 05:01:08,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:08,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:01:08,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:08,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166753745] [2024-11-28 05:01:08,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166753745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:08,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:01:08,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:01:08,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177367251] [2024-11-28 05:01:08,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:08,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:01:08,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:08,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:01:08,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:01:08,523 INFO L87 Difference]: Start difference. First operand 38137 states and 72720 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:01:15,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:15,325 INFO L93 Difference]: Finished difference Result 115625 states and 251619 transitions. [2024-11-28 05:01:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:01:15,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 100 [2024-11-28 05:01:15,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:15,786 INFO L225 Difference]: With dead ends: 115625 [2024-11-28 05:01:15,786 INFO L226 Difference]: Without dead ends: 81025 [2024-11-28 05:01:15,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:01:15,916 INFO L435 NwaCegarLoop]: 439 mSDtfsCounter, 727 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:15,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 1712 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 05:01:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81025 states. [2024-11-28 05:01:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81025 to 78695. [2024-11-28 05:01:23,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78695 states, 66937 states have (on average 1.5960081868025158) internal successors, (106832), 73303 states have internal predecessors, (106832), 3485 states have call successors, (3485), 1868 states have call predecessors, (3485), 8271 states have return successors, (69181), 3785 states have call predecessors, (69181), 3482 states have call successors, (69181) [2024-11-28 05:01:24,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78695 states to 78695 states and 179498 transitions. [2024-11-28 05:01:24,286 INFO L78 Accepts]: Start accepts. Automaton has 78695 states and 179498 transitions. Word has length 100 [2024-11-28 05:01:24,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:24,286 INFO L471 AbstractCegarLoop]: Abstraction has 78695 states and 179498 transitions. [2024-11-28 05:01:24,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 05:01:24,286 INFO L276 IsEmpty]: Start isEmpty. Operand 78695 states and 179498 transitions. [2024-11-28 05:01:24,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 05:01:24,317 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:24,317 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:01:24,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 05:01:24,317 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:24,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:24,318 INFO L85 PathProgramCache]: Analyzing trace with hash 857835531, now seen corresponding path program 1 times [2024-11-28 05:01:24,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:24,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688509044] [2024-11-28 05:01:24,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:24,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:24,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:01:24,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:24,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688509044] [2024-11-28 05:01:24,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688509044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:24,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:01:24,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:01:24,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103546402] [2024-11-28 05:01:24,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:24,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:01:24,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:24,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:01:24,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:01:24,428 INFO L87 Difference]: Start difference. First operand 78695 states and 179498 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)