./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/bin/uautomizer-verify-BQ2R08f2Ya --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 c28ca11e40cca108d65dd6d7b4fa74385c8fc7845c04d791c76ec52f444c2043 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:38:22,958 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:38:23,026 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:38:23,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:38:23,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:38:23,064 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:38:23,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:38:23,065 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:38:23,066 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:38:23,066 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:38:23,067 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:38:23,067 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:38:23,068 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:38:23,069 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:38:23,069 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:38:23,070 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:38:23,070 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:38:23,071 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:38:23,071 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:38:23,072 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:38:23,072 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:38:23,082 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:38:23,083 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:38:23,083 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:38:23,084 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:38:23,084 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:38:23,085 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:38:23,085 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:38:23,085 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:38:23,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:38:23,086 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:38:23,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:38:23,087 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:38:23,087 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:38:23,087 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:38:23,087 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:38:23,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:38:23,088 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:38:23,088 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:38:23,088 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:38:23,088 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:38:23,089 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:38:23,089 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c28ca11e40cca108d65dd6d7b4fa74385c8fc7845c04d791c76ec52f444c2043 [2023-11-29 02:38:23,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:38:23,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:38:23,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:38:23,350 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:38:23,350 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:38:23,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c [2023-11-29 02:38:26,142 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:38:26,378 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:38:26,379 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c [2023-11-29 02:38:26,400 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/bin/uautomizer-verify-BQ2R08f2Ya/data/d1def45c6/9fd6a9de3a3e44e6beaa49a3c49bece2/FLAG3d6a745d0 [2023-11-29 02:38:26,415 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/bin/uautomizer-verify-BQ2R08f2Ya/data/d1def45c6/9fd6a9de3a3e44e6beaa49a3c49bece2 [2023-11-29 02:38:26,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:38:26,419 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:38:26,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:38:26,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:38:26,426 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:38:26,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:38:26" (1/1) ... [2023-11-29 02:38:26,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac20940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:38:26, skipping insertion in model container [2023-11-29 02:38:26,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:38:26" (1/1) ... [2023-11-29 02:38:26,487 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:38:26,625 WARN L240 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_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c[911,924] [2023-11-29 02:38:26,688 WARN L240 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_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c[8416,8429] [2023-11-29 02:38:26,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:38:26,788 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:38:26,798 WARN L240 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_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c[911,924] [2023-11-29 02:38:26,822 WARN L240 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_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-2.c[8416,8429] [2023-11-29 02:38:26,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:38:26,899 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:38:26,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:38:26 WrapperNode [2023-11-29 02:38:26,899 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:38:26,900 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:38:26,900 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:38:26,900 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:38:26,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:38:26" (1/1) ... [2023-11-29 02:38:26,923 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:38:26" (1/1) ... [2023-11-29 02:38:26,975 INFO L138 Inliner]: procedures = 71, calls = 86, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 874 [2023-11-29 02:38:26,975 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:38:26,976 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:38:26,976 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:38:26,976 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:38:26,989 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:38:26" (1/1) ... [2023-11-29 02:38:26,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:38:26" (1/1) ... [2023-11-29 02:38:26,995 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:38:26" (1/1) ... [2023-11-29 02:38:27,017 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]. [2023-11-29 02:38:27,018 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:38:26" (1/1) ... [2023-11-29 02:38:27,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:38:26" (1/1) ... [2023-11-29 02:38:27,036 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:38:26" (1/1) ... [2023-11-29 02:38:27,059 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:38:26" (1/1) ... [2023-11-29 02:38:27,063 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:38:26" (1/1) ... [2023-11-29 02:38:27,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:38:26" (1/1) ... [2023-11-29 02:38:27,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:38:27,076 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:38:27,076 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:38:27,076 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:38:27,077 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:38:26" (1/1) ... [2023-11-29 02:38:27,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:38:27,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:38:27,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:38:27,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d88bbf-dfc4-4a9f-8d83-f153fe3f6899/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:38:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:38:27,189 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-29 02:38:27,189 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-29 02:38:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-29 02:38:27,190 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-29 02:38:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-29 02:38:27,190 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-29 02:38:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-29 02:38:27,190 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-29 02:38:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-11-29 02:38:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-11-29 02:38:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-29 02:38:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-29 02:38:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-29 02:38:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-29 02:38:27,191 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-11-29 02:38:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-11-29 02:38:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-29 02:38:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-29 02:38:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-11-29 02:38:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-11-29 02:38:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-29 02:38:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-29 02:38:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:38:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-29 02:38:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-29 02:38:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-11-29 02:38:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-11-29 02:38:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:38:27,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:38:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-29 02:38:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-29 02:38:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2023-11-29 02:38:27,194 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2023-11-29 02:38:27,331 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:38:27,333 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:38:27,955 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-11-29 02:38:27,956 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2023-11-29 02:38:28,028 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:38:28,090 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:38:28,091 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-29 02:38:28,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:38:28 BoogieIcfgContainer [2023-11-29 02:38:28,092 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:38:28,094 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:38:28,095 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:38:28,098 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:38:28,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:38:26" (1/3) ... [2023-11-29 02:38:28,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63fd89a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:38:28, skipping insertion in model container [2023-11-29 02:38:28,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:38:26" (2/3) ... [2023-11-29 02:38:28,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63fd89a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:38:28, skipping insertion in model container [2023-11-29 02:38:28,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:38:28" (3/3) ... [2023-11-29 02:38:28,100 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.08.cil-2.c [2023-11-29 02:38:28,116 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:38:28,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 02:38:28,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:38:28,190 INFO L357 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, mHoare=true, 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;@4e6d852f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:38:28,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 02:38:28,196 INFO L276 IsEmpty]: Start isEmpty. Operand has 368 states, 310 states have (on average 1.7032258064516128) internal successors, (528), 318 states have internal predecessors, (528), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-29 02:38:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 02:38:28,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:28,207 INFO L195 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] [2023-11-29 02:38:28,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:28,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:28,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1701733886, now seen corresponding path program 1 times [2023-11-29 02:38:28,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:28,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618540551] [2023-11-29 02:38:28,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:28,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:28,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:28,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:38:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:28,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:38:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:28,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:38:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:28,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:38:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:28,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 02:38:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:38:28,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:28,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618540551] [2023-11-29 02:38:28,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618540551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:28,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:28,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 02:38:28,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414695717] [2023-11-29 02:38:28,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:28,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:38:28,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:28,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:38:28,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:38:28,759 INFO L87 Difference]: Start difference. First operand has 368 states, 310 states have (on average 1.7032258064516128) internal successors, (528), 318 states have internal predecessors, (528), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 02:38:30,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:30,317 INFO L93 Difference]: Finished difference Result 852 states and 1401 transitions. [2023-11-29 02:38:30,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:38:30,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 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 57 [2023-11-29 02:38:30,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:30,336 INFO L225 Difference]: With dead ends: 852 [2023-11-29 02:38:30,337 INFO L226 Difference]: Without dead ends: 500 [2023-11-29 02:38:30,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:38:30,347 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 709 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:30,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1486 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 02:38:30,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-29 02:38:30,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 463. [2023-11-29 02:38:30,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 386 states have (on average 1.572538860103627) internal successors, (607), 393 states have internal predecessors, (607), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2023-11-29 02:38:30,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 714 transitions. [2023-11-29 02:38:30,449 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 714 transitions. Word has length 57 [2023-11-29 02:38:30,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:30,449 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 714 transitions. [2023-11-29 02:38:30,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 02:38:30,450 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 714 transitions. [2023-11-29 02:38:30,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 02:38:30,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:30,454 INFO L195 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] [2023-11-29 02:38:30,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:38:30,455 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:30,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:30,455 INFO L85 PathProgramCache]: Analyzing trace with hash -242258882, now seen corresponding path program 1 times [2023-11-29 02:38:30,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:30,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113166956] [2023-11-29 02:38:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:30,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:30,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:30,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:30,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:38:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:30,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:38:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:30,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:38:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:30,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:38:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:30,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 02:38:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:30,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:38:30,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:30,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113166956] [2023-11-29 02:38:30,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113166956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:30,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:30,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 02:38:30,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232169755] [2023-11-29 02:38:30,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:30,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:38:30,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:30,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:38:30,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:38:30,656 INFO L87 Difference]: Start difference. First operand 463 states and 714 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 02:38:32,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:32,166 INFO L93 Difference]: Finished difference Result 824 states and 1244 transitions. [2023-11-29 02:38:32,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 02:38:32,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 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 57 [2023-11-29 02:38:32,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:32,174 INFO L225 Difference]: With dead ends: 824 [2023-11-29 02:38:32,174 INFO L226 Difference]: Without dead ends: 636 [2023-11-29 02:38:32,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-29 02:38:32,177 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 1100 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:32,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 1784 Invalid, 1779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1657 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 02:38:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-11-29 02:38:32,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 564. [2023-11-29 02:38:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 465 states have (on average 1.5526881720430108) internal successors, (722), 474 states have internal predecessors, (722), 66 states have call successors, (66), 29 states have call predecessors, (66), 31 states have return successors, (75), 64 states have call predecessors, (75), 62 states have call successors, (75) [2023-11-29 02:38:32,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 863 transitions. [2023-11-29 02:38:32,237 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 863 transitions. Word has length 57 [2023-11-29 02:38:32,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:32,237 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 863 transitions. [2023-11-29 02:38:32,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 02:38:32,238 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 863 transitions. [2023-11-29 02:38:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 02:38:32,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:32,242 INFO L195 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] [2023-11-29 02:38:32,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:38:32,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:32,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:32,243 INFO L85 PathProgramCache]: Analyzing trace with hash 651227456, now seen corresponding path program 1 times [2023-11-29 02:38:32,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:32,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623212946] [2023-11-29 02:38:32,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:32,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:32,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:32,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:32,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:38:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:32,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:38:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:32,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:38:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:32,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:38:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:32,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 02:38:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:38:32,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:32,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623212946] [2023-11-29 02:38:32,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623212946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:32,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:32,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:38:32,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682990471] [2023-11-29 02:38:32,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:32,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:38:32,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:32,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:38:32,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:38:32,406 INFO L87 Difference]: Start difference. First operand 564 states and 863 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 02:38:34,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:34,518 INFO L93 Difference]: Finished difference Result 1962 states and 2913 transitions. [2023-11-29 02:38:34,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 02:38:34,519 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 57 [2023-11-29 02:38:34,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:34,533 INFO L225 Difference]: With dead ends: 1962 [2023-11-29 02:38:34,534 INFO L226 Difference]: Without dead ends: 1661 [2023-11-29 02:38:34,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 02:38:34,539 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 3366 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3384 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:34,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3384 Valid, 1733 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:38:34,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2023-11-29 02:38:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1528. [2023-11-29 02:38:34,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1224 states have (on average 1.451797385620915) internal successors, (1777), 1248 states have internal predecessors, (1777), 176 states have call successors, (176), 112 states have call predecessors, (176), 126 states have return successors, (208), 170 states have call predecessors, (208), 172 states have call successors, (208) [2023-11-29 02:38:34,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 2161 transitions. [2023-11-29 02:38:34,687 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 2161 transitions. Word has length 57 [2023-11-29 02:38:34,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:34,687 INFO L495 AbstractCegarLoop]: Abstraction has 1528 states and 2161 transitions. [2023-11-29 02:38:34,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 02:38:34,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 2161 transitions. [2023-11-29 02:38:34,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 02:38:34,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:34,690 INFO L195 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] [2023-11-29 02:38:34,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:38:34,690 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:34,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:34,691 INFO L85 PathProgramCache]: Analyzing trace with hash -941419799, now seen corresponding path program 1 times [2023-11-29 02:38:34,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:34,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936428308] [2023-11-29 02:38:34,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:34,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:34,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:34,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:34,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:38:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:34,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:38:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:34,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:34,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:38:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:34,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:38:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:38:34,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:34,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936428308] [2023-11-29 02:38:34,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936428308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:34,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:34,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 02:38:34,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553102589] [2023-11-29 02:38:34,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:34,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:38:34,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:34,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:38:34,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:38:34,856 INFO L87 Difference]: Start difference. First operand 1528 states and 2161 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 02:38:36,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:36,214 INFO L93 Difference]: Finished difference Result 2925 states and 4109 transitions. [2023-11-29 02:38:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:38:36,215 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 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 58 [2023-11-29 02:38:36,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:36,227 INFO L225 Difference]: With dead ends: 2925 [2023-11-29 02:38:36,227 INFO L226 Difference]: Without dead ends: 1666 [2023-11-29 02:38:36,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:38:36,232 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 484 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 1767 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:36,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 2044 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1767 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 02:38:36,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2023-11-29 02:38:36,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1560. [2023-11-29 02:38:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1248 states have (on average 1.4383012820512822) internal successors, (1795), 1272 states have internal predecessors, (1795), 176 states have call successors, (176), 112 states have call predecessors, (176), 134 states have return successors, (216), 178 states have call predecessors, (216), 172 states have call successors, (216) [2023-11-29 02:38:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 2187 transitions. [2023-11-29 02:38:36,370 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 2187 transitions. Word has length 58 [2023-11-29 02:38:36,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:36,371 INFO L495 AbstractCegarLoop]: Abstraction has 1560 states and 2187 transitions. [2023-11-29 02:38:36,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 02:38:36,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 2187 transitions. [2023-11-29 02:38:36,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 02:38:36,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:36,372 INFO L195 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] [2023-11-29 02:38:36,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:38:36,373 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:36,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:36,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1013806357, now seen corresponding path program 1 times [2023-11-29 02:38:36,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:36,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417136557] [2023-11-29 02:38:36,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:36,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:38:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:38:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:38:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:38:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:38:36,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:36,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417136557] [2023-11-29 02:38:36,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417136557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:36,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:36,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:38:36,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979905612] [2023-11-29 02:38:36,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:36,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:38:36,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:36,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:38:36,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:38:36,583 INFO L87 Difference]: Start difference. First operand 1560 states and 2187 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 02:38:38,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:38,890 INFO L93 Difference]: Finished difference Result 4819 states and 6748 transitions. [2023-11-29 02:38:38,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 02:38:38,891 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 58 [2023-11-29 02:38:38,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:38,905 INFO L225 Difference]: With dead ends: 4819 [2023-11-29 02:38:38,905 INFO L226 Difference]: Without dead ends: 1930 [2023-11-29 02:38:38,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 02:38:38,914 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 3077 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3095 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:38,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3095 Valid, 2097 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 1920 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 02:38:38,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2023-11-29 02:38:39,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1774. [2023-11-29 02:38:39,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1390 states have (on average 1.3841726618705037) internal successors, (1924), 1416 states have internal predecessors, (1924), 216 states have call successors, (216), 140 states have call predecessors, (216), 166 states have return successors, (262), 220 states have call predecessors, (262), 212 states have call successors, (262) [2023-11-29 02:38:39,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2402 transitions. [2023-11-29 02:38:39,077 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2402 transitions. Word has length 58 [2023-11-29 02:38:39,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:39,077 INFO L495 AbstractCegarLoop]: Abstraction has 1774 states and 2402 transitions. [2023-11-29 02:38:39,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 02:38:39,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2402 transitions. [2023-11-29 02:38:39,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 02:38:39,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:39,080 INFO L195 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] [2023-11-29 02:38:39,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:38:39,081 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:39,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:39,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1847383777, now seen corresponding path program 1 times [2023-11-29 02:38:39,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:39,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297463295] [2023-11-29 02:38:39,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:39,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:39,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:39,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:39,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:38:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:39,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:38:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:39,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:38:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:39,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 02:38:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:39,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 02:38:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 02:38:39,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:39,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297463295] [2023-11-29 02:38:39,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297463295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:39,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:39,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 02:38:39,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276569486] [2023-11-29 02:38:39,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:39,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:38:39,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:39,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:38:39,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:38:39,253 INFO L87 Difference]: Start difference. First operand 1774 states and 2402 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 02:38:40,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:40,384 INFO L93 Difference]: Finished difference Result 3459 states and 4664 transitions. [2023-11-29 02:38:40,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:38:40,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 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 80 [2023-11-29 02:38:40,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:40,395 INFO L225 Difference]: With dead ends: 3459 [2023-11-29 02:38:40,396 INFO L226 Difference]: Without dead ends: 1954 [2023-11-29 02:38:40,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:38:40,401 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 714 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:40,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1784 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 02:38:40,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2023-11-29 02:38:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1822. [2023-11-29 02:38:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1426 states have (on average 1.370266479663394) internal successors, (1954), 1452 states have internal predecessors, (1954), 216 states have call successors, (216), 140 states have call predecessors, (216), 178 states have return successors, (274), 232 states have call predecessors, (274), 212 states have call successors, (274) [2023-11-29 02:38:40,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 2444 transitions. [2023-11-29 02:38:40,562 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 2444 transitions. Word has length 80 [2023-11-29 02:38:40,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:40,563 INFO L495 AbstractCegarLoop]: Abstraction has 1822 states and 2444 transitions. [2023-11-29 02:38:40,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 02:38:40,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 2444 transitions. [2023-11-29 02:38:40,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 02:38:40,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:40,566 INFO L195 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] [2023-11-29 02:38:40,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:38:40,567 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:40,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:40,567 INFO L85 PathProgramCache]: Analyzing trace with hash -519310817, now seen corresponding path program 1 times [2023-11-29 02:38:40,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:40,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114815098] [2023-11-29 02:38:40,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:40,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:40,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:40,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:40,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:38:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:40,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:38:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:40,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:40,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:38:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:40,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 02:38:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:40,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 02:38:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 02:38:40,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:40,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114815098] [2023-11-29 02:38:40,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114815098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:40,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:40,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 02:38:40,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639917490] [2023-11-29 02:38:40,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:40,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:38:40,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:40,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:38:40,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:38:40,769 INFO L87 Difference]: Start difference. First operand 1822 states and 2444 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 02:38:42,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:42,018 INFO L93 Difference]: Finished difference Result 3221 states and 4280 transitions. [2023-11-29 02:38:42,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 02:38:42,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 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 80 [2023-11-29 02:38:42,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:42,030 INFO L225 Difference]: With dead ends: 3221 [2023-11-29 02:38:42,030 INFO L226 Difference]: Without dead ends: 1889 [2023-11-29 02:38:42,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:38:42,035 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 1098 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:42,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 1544 Invalid, 1615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 02:38:42,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2023-11-29 02:38:42,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1614. [2023-11-29 02:38:42,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1271 states have (on average 1.3760818253343823) internal successors, (1749), 1292 states have internal predecessors, (1749), 188 states have call successors, (188), 121 states have call predecessors, (188), 153 states have return successors, (234), 202 states have call predecessors, (234), 184 states have call successors, (234) [2023-11-29 02:38:42,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2171 transitions. [2023-11-29 02:38:42,170 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2171 transitions. Word has length 80 [2023-11-29 02:38:42,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:42,171 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 2171 transitions. [2023-11-29 02:38:42,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 02:38:42,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2171 transitions. [2023-11-29 02:38:42,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 02:38:42,172 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:42,173 INFO L195 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] [2023-11-29 02:38:42,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:38:42,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:42,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:42,174 INFO L85 PathProgramCache]: Analyzing trace with hash -95664095, now seen corresponding path program 1 times [2023-11-29 02:38:42,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:42,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814152365] [2023-11-29 02:38:42,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:42,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:42,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:42,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:42,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:38:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:42,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:38:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:42,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:42,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:38:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:42,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 02:38:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:42,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 02:38:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 02:38:42,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:42,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814152365] [2023-11-29 02:38:42,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814152365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:42,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:42,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:38:42,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762343003] [2023-11-29 02:38:42,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:42,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:38:42,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:42,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:38:42,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:38:42,300 INFO L87 Difference]: Start difference. First operand 1614 states and 2171 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 02:38:43,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:43,217 INFO L93 Difference]: Finished difference Result 4514 states and 6031 transitions. [2023-11-29 02:38:43,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:38:43,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 80 [2023-11-29 02:38:43,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:43,236 INFO L225 Difference]: With dead ends: 4514 [2023-11-29 02:38:43,237 INFO L226 Difference]: Without dead ends: 3170 [2023-11-29 02:38:43,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:38:43,242 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1287 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:43,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 1026 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:38:43,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2023-11-29 02:38:43,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 2960. [2023-11-29 02:38:43,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2960 states, 2297 states have (on average 1.3295602960383108) internal successors, (3054), 2347 states have internal predecessors, (3054), 349 states have call successors, (349), 234 states have call predecessors, (349), 312 states have return successors, (517), 381 states have call predecessors, (517), 345 states have call successors, (517) [2023-11-29 02:38:43,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 3920 transitions. [2023-11-29 02:38:43,474 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 3920 transitions. Word has length 80 [2023-11-29 02:38:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:43,474 INFO L495 AbstractCegarLoop]: Abstraction has 2960 states and 3920 transitions. [2023-11-29 02:38:43,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-29 02:38:43,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 3920 transitions. [2023-11-29 02:38:43,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 02:38:43,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:43,476 INFO L195 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] [2023-11-29 02:38:43,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:38:43,477 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:43,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:43,477 INFO L85 PathProgramCache]: Analyzing trace with hash -18763297, now seen corresponding path program 1 times [2023-11-29 02:38:43,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:43,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247573353] [2023-11-29 02:38:43,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:43,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:43,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:43,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:43,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:38:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:43,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:38:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:43,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:43,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:38:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:43,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 02:38:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:43,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 02:38:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 02:38:43,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:43,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247573353] [2023-11-29 02:38:43,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247573353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:43,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:43,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:38:43,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790406359] [2023-11-29 02:38:43,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:43,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:38:43,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:43,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:38:43,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:38:43,576 INFO L87 Difference]: Start difference. First operand 2960 states and 3920 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 02:38:44,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:44,233 INFO L93 Difference]: Finished difference Result 4417 states and 5777 transitions. [2023-11-29 02:38:44,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:38:44,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 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 80 [2023-11-29 02:38:44,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:44,241 INFO L225 Difference]: With dead ends: 4417 [2023-11-29 02:38:44,242 INFO L226 Difference]: Without dead ends: 1727 [2023-11-29 02:38:44,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:38:44,246 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 587 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:44,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 1147 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:38:44,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2023-11-29 02:38:44,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1614. [2023-11-29 02:38:44,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1271 states have (on average 1.3469708890637293) internal successors, (1712), 1292 states have internal predecessors, (1712), 188 states have call successors, (188), 121 states have call predecessors, (188), 153 states have return successors, (234), 202 states have call predecessors, (234), 184 states have call successors, (234) [2023-11-29 02:38:44,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2134 transitions. [2023-11-29 02:38:44,392 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2134 transitions. Word has length 80 [2023-11-29 02:38:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:44,393 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 2134 transitions. [2023-11-29 02:38:44,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 02:38:44,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2134 transitions. [2023-11-29 02:38:44,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 02:38:44,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:44,394 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 02:38:44,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:38:44,395 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:44,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:44,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1639917928, now seen corresponding path program 1 times [2023-11-29 02:38:44,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:44,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199224626] [2023-11-29 02:38:44,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:44,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:44,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:44,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:44,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:38:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:44,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:38:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:44,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:38:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:44,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:38:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:44,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 02:38:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:44,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 02:38:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:38:44,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:44,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199224626] [2023-11-29 02:38:44,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199224626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:44,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:44,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 02:38:44,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337770818] [2023-11-29 02:38:44,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:44,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:38:44,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:44,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:38:44,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:38:44,536 INFO L87 Difference]: Start difference. First operand 1614 states and 2134 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 02:38:45,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:45,926 INFO L93 Difference]: Finished difference Result 3835 states and 5020 transitions. [2023-11-29 02:38:45,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 02:38:45,926 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 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 81 [2023-11-29 02:38:45,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:45,937 INFO L225 Difference]: With dead ends: 3835 [2023-11-29 02:38:45,937 INFO L226 Difference]: Without dead ends: 2350 [2023-11-29 02:38:45,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2023-11-29 02:38:45,941 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 2012 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:45,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2051 Valid, 1590 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 02:38:45,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2023-11-29 02:38:46,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2186. [2023-11-29 02:38:46,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2186 states, 1689 states have (on average 1.3055062166962699) internal successors, (2205), 1718 states have internal predecessors, (2205), 265 states have call successors, (265), 169 states have call predecessors, (265), 230 states have return successors, (365), 300 states have call predecessors, (365), 261 states have call successors, (365) [2023-11-29 02:38:46,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 2835 transitions. [2023-11-29 02:38:46,180 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 2835 transitions. Word has length 81 [2023-11-29 02:38:46,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:46,180 INFO L495 AbstractCegarLoop]: Abstraction has 2186 states and 2835 transitions. [2023-11-29 02:38:46,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-29 02:38:46,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 2835 transitions. [2023-11-29 02:38:46,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:38:46,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:46,183 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:38:46,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:38:46,184 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:46,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:46,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1167941009, now seen corresponding path program 1 times [2023-11-29 02:38:46,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:46,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552683155] [2023-11-29 02:38:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:46,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:46,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:46,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 02:38:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:46,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:38:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:46,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:38:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:46,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:38:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:38:46,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:46,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552683155] [2023-11-29 02:38:46,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552683155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:46,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:46,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:38:46,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576539069] [2023-11-29 02:38:46,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:46,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:38:46,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:46,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:38:46,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:38:46,374 INFO L87 Difference]: Start difference. First operand 2186 states and 2835 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:38:48,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:48,598 INFO L93 Difference]: Finished difference Result 2573 states and 3484 transitions. [2023-11-29 02:38:48,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:38:48,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 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 122 [2023-11-29 02:38:48,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:48,609 INFO L225 Difference]: With dead ends: 2573 [2023-11-29 02:38:48,609 INFO L226 Difference]: Without dead ends: 2318 [2023-11-29 02:38:48,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:38:48,611 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 979 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:48,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1233 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:38:48,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2023-11-29 02:38:48,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2188. [2023-11-29 02:38:48,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1691 states have (on average 1.3045535186280308) internal successors, (2206), 1720 states have internal predecessors, (2206), 265 states have call successors, (265), 169 states have call predecessors, (265), 230 states have return successors, (365), 300 states have call predecessors, (365), 261 states have call successors, (365) [2023-11-29 02:38:48,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 2836 transitions. [2023-11-29 02:38:48,856 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 2836 transitions. Word has length 122 [2023-11-29 02:38:48,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:48,857 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 2836 transitions. [2023-11-29 02:38:48,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:38:48,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 2836 transitions. [2023-11-29 02:38:48,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:38:48,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:48,860 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:38:48,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:38:48,860 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:48,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:48,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1261369489, now seen corresponding path program 1 times [2023-11-29 02:38:48,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:48,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303771029] [2023-11-29 02:38:48,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:48,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:48,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:48,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 02:38:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:49,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:38:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:49,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:38:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:49,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:38:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:38:49,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:49,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303771029] [2023-11-29 02:38:49,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303771029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:49,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:49,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:38:49,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737704695] [2023-11-29 02:38:49,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:49,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:38:49,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:49,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:38:49,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:38:49,046 INFO L87 Difference]: Start difference. First operand 2188 states and 2836 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:38:51,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:51,698 INFO L93 Difference]: Finished difference Result 2881 states and 3978 transitions. [2023-11-29 02:38:51,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:38:51,699 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 4 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 122 [2023-11-29 02:38:51,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:51,709 INFO L225 Difference]: With dead ends: 2881 [2023-11-29 02:38:51,709 INFO L226 Difference]: Without dead ends: 2632 [2023-11-29 02:38:51,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:38:51,711 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1277 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:51,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1304 Valid, 1026 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 02:38:51,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2023-11-29 02:38:51,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2447. [2023-11-29 02:38:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 1926 states have (on average 1.3447559709241952) internal successors, (2590), 1956 states have internal predecessors, (2590), 282 states have call successors, (282), 175 states have call predecessors, (282), 237 states have return successors, (385), 317 states have call predecessors, (385), 278 states have call successors, (385) [2023-11-29 02:38:52,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 3257 transitions. [2023-11-29 02:38:52,004 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 3257 transitions. Word has length 122 [2023-11-29 02:38:52,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:52,004 INFO L495 AbstractCegarLoop]: Abstraction has 2447 states and 3257 transitions. [2023-11-29 02:38:52,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:38:52,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 3257 transitions. [2023-11-29 02:38:52,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:38:52,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:52,006 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:38:52,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 02:38:52,007 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:52,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:52,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1537294801, now seen corresponding path program 1 times [2023-11-29 02:38:52,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:52,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546223694] [2023-11-29 02:38:52,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:52,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:52,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:52,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 02:38:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:52,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:38:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:52,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:38:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:52,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:38:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:38:52,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:52,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546223694] [2023-11-29 02:38:52,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546223694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:52,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:52,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:38:52,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294881325] [2023-11-29 02:38:52,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:52,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:38:52,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:52,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:38:52,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:38:52,257 INFO L87 Difference]: Start difference. First operand 2447 states and 3257 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:38:55,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:55,542 INFO L93 Difference]: Finished difference Result 3502 states and 4994 transitions. [2023-11-29 02:38:55,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:38:55,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 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 122 [2023-11-29 02:38:55,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:55,553 INFO L225 Difference]: With dead ends: 3502 [2023-11-29 02:38:55,553 INFO L226 Difference]: Without dead ends: 2994 [2023-11-29 02:38:55,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:38:55,579 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1294 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 2938 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 3035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:55,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 1815 Invalid, 3035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2938 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 02:38:55,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2023-11-29 02:38:55,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2687. [2023-11-29 02:38:55,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2687 states, 2142 states have (on average 1.3706816059757236) internal successors, (2936), 2173 states have internal predecessors, (2936), 299 states have call successors, (299), 181 states have call predecessors, (299), 244 states have return successors, (404), 335 states have call predecessors, (404), 295 states have call successors, (404) [2023-11-29 02:38:55,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2687 states to 2687 states and 3639 transitions. [2023-11-29 02:38:55,826 INFO L78 Accepts]: Start accepts. Automaton has 2687 states and 3639 transitions. Word has length 122 [2023-11-29 02:38:55,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:55,826 INFO L495 AbstractCegarLoop]: Abstraction has 2687 states and 3639 transitions. [2023-11-29 02:38:55,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:38:55,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2687 states and 3639 transitions. [2023-11-29 02:38:55,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:38:55,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:55,829 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:38:55,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 02:38:55,829 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:55,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:55,829 INFO L85 PathProgramCache]: Analyzing trace with hash -148000787, now seen corresponding path program 1 times [2023-11-29 02:38:55,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:55,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664029331] [2023-11-29 02:38:55,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:55,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:55,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:55,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 02:38:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:56,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:38:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:56,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:38:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:56,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:38:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:38:56,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:56,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664029331] [2023-11-29 02:38:56,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664029331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:56,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:56,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:38:56,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692662845] [2023-11-29 02:38:56,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:56,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:38:56,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:56,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:38:56,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:38:56,034 INFO L87 Difference]: Start difference. First operand 2687 states and 3639 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:38:59,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:38:59,024 INFO L93 Difference]: Finished difference Result 4413 states and 6476 transitions. [2023-11-29 02:38:59,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:38:59,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 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 122 [2023-11-29 02:38:59,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:38:59,039 INFO L225 Difference]: With dead ends: 4413 [2023-11-29 02:38:59,039 INFO L226 Difference]: Without dead ends: 3665 [2023-11-29 02:38:59,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:38:59,044 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1298 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 2929 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:38:59,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 1813 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2929 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 02:38:59,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2023-11-29 02:38:59,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 3168. [2023-11-29 02:38:59,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3168 states, 2575 states have (on average 1.4093203883495145) internal successors, (3629), 2608 states have internal predecessors, (3629), 333 states have call successors, (333), 193 states have call predecessors, (333), 258 states have return successors, (446), 371 states have call predecessors, (446), 329 states have call successors, (446) [2023-11-29 02:38:59,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 4408 transitions. [2023-11-29 02:38:59,323 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 4408 transitions. Word has length 122 [2023-11-29 02:38:59,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:38:59,323 INFO L495 AbstractCegarLoop]: Abstraction has 3168 states and 4408 transitions. [2023-11-29 02:38:59,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:38:59,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 4408 transitions. [2023-11-29 02:38:59,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:38:59,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:38:59,325 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:38:59,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 02:38:59,326 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:38:59,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:38:59,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2113572463, now seen corresponding path program 1 times [2023-11-29 02:38:59,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:38:59,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612154063] [2023-11-29 02:38:59,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:38:59,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:38:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:59,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:38:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:59,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 02:38:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:59,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:38:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:59,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:38:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:59,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:38:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:38:59,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:38:59,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:38:59,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612154063] [2023-11-29 02:38:59,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612154063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:38:59,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:38:59,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:38:59,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980309240] [2023-11-29 02:38:59,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:38:59,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:38:59,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:38:59,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:38:59,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:38:59,544 INFO L87 Difference]: Start difference. First operand 3168 states and 4408 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:39:02,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:39:02,602 INFO L93 Difference]: Finished difference Result 6159 states and 9305 transitions. [2023-11-29 02:39:02,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:39:02,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 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 122 [2023-11-29 02:39:02,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:39:02,618 INFO L225 Difference]: With dead ends: 6159 [2023-11-29 02:39:02,618 INFO L226 Difference]: Without dead ends: 4930 [2023-11-29 02:39:02,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:39:02,622 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1294 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 2901 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:39:02,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 1813 Invalid, 3000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2901 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 02:39:02,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4930 states. [2023-11-29 02:39:02,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4930 to 4136. [2023-11-29 02:39:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4136 states, 3447 states have (on average 1.4577893820713663) internal successors, (5025), 3484 states have internal predecessors, (5025), 401 states have call successors, (401), 217 states have call predecessors, (401), 286 states have return successors, (536), 443 states have call predecessors, (536), 397 states have call successors, (536) [2023-11-29 02:39:02,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 5962 transitions. [2023-11-29 02:39:02,948 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 5962 transitions. Word has length 122 [2023-11-29 02:39:02,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:39:02,948 INFO L495 AbstractCegarLoop]: Abstraction has 4136 states and 5962 transitions. [2023-11-29 02:39:02,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:39:02,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 5962 transitions. [2023-11-29 02:39:02,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:39:02,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:39:02,952 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:39:02,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 02:39:02,952 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:39:02,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:39:02,953 INFO L85 PathProgramCache]: Analyzing trace with hash 806430065, now seen corresponding path program 1 times [2023-11-29 02:39:02,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:39:02,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93420242] [2023-11-29 02:39:02,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:39:02,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:39:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:03,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:39:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:03,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 02:39:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:03,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:39:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:03,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:39:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:03,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:39:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:03,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:39:03,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:39:03,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93420242] [2023-11-29 02:39:03,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93420242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:39:03,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:39:03,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:39:03,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69433722] [2023-11-29 02:39:03,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:39:03,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:39:03,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:39:03,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:39:03,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:39:03,153 INFO L87 Difference]: Start difference. First operand 4136 states and 5962 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:39:06,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:39:06,299 INFO L93 Difference]: Finished difference Result 9661 states and 14997 transitions. [2023-11-29 02:39:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:39:06,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 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 122 [2023-11-29 02:39:06,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:39:06,328 INFO L225 Difference]: With dead ends: 9661 [2023-11-29 02:39:06,328 INFO L226 Difference]: Without dead ends: 7464 [2023-11-29 02:39:06,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:39:06,334 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1293 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 2888 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 2987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:39:06,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 1813 Invalid, 2987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2888 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 02:39:06,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7464 states. [2023-11-29 02:39:06,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7464 to 6077. [2023-11-29 02:39:06,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6077 states, 5196 states have (on average 1.5055812163202464) internal successors, (7823), 5241 states have internal predecessors, (7823), 537 states have call successors, (537), 265 states have call predecessors, (537), 342 states have return successors, (734), 587 states have call predecessors, (734), 533 states have call successors, (734) [2023-11-29 02:39:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6077 states to 6077 states and 9094 transitions. [2023-11-29 02:39:06,835 INFO L78 Accepts]: Start accepts. Automaton has 6077 states and 9094 transitions. Word has length 122 [2023-11-29 02:39:06,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:39:06,835 INFO L495 AbstractCegarLoop]: Abstraction has 6077 states and 9094 transitions. [2023-11-29 02:39:06,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:39:06,835 INFO L276 IsEmpty]: Start isEmpty. Operand 6077 states and 9094 transitions. [2023-11-29 02:39:06,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:39:06,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:39:06,840 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:39:06,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 02:39:06,841 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:39:06,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:39:06,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1591040465, now seen corresponding path program 1 times [2023-11-29 02:39:06,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:39:06,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763400450] [2023-11-29 02:39:06,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:39:06,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:39:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:06,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:39:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:06,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 02:39:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:07,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:39:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:39:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:39:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:07,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:39:07,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:39:07,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763400450] [2023-11-29 02:39:07,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763400450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:39:07,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:39:07,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:39:07,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988518846] [2023-11-29 02:39:07,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:39:07,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:39:07,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:39:07,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:39:07,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:39:07,028 INFO L87 Difference]: Start difference. First operand 6077 states and 9094 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:39:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:39:10,172 INFO L93 Difference]: Finished difference Result 16664 states and 26439 transitions. [2023-11-29 02:39:10,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:39:10,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 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 122 [2023-11-29 02:39:10,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:39:10,205 INFO L225 Difference]: With dead ends: 16664 [2023-11-29 02:39:10,205 INFO L226 Difference]: Without dead ends: 12526 [2023-11-29 02:39:10,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:39:10,219 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 1367 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 2570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:39:10,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 1268 Invalid, 2570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 02:39:10,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12526 states. [2023-11-29 02:39:10,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12526 to 9974. [2023-11-29 02:39:10,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9974 states, 8709 states have (on average 1.543345963945344) internal successors, (13441), 8770 states have internal predecessors, (13441), 809 states have call successors, (809), 361 states have call predecessors, (809), 454 states have return successors, (1184), 875 states have call predecessors, (1184), 805 states have call successors, (1184) [2023-11-29 02:39:10,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9974 states to 9974 states and 15434 transitions. [2023-11-29 02:39:10,940 INFO L78 Accepts]: Start accepts. Automaton has 9974 states and 15434 transitions. Word has length 122 [2023-11-29 02:39:10,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:39:10,941 INFO L495 AbstractCegarLoop]: Abstraction has 9974 states and 15434 transitions. [2023-11-29 02:39:10,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:39:10,941 INFO L276 IsEmpty]: Start isEmpty. Operand 9974 states and 15434 transitions. [2023-11-29 02:39:10,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:39:10,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:39:10,949 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:39:10,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 02:39:10,949 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:39:10,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:39:10,949 INFO L85 PathProgramCache]: Analyzing trace with hash -559999567, now seen corresponding path program 1 times [2023-11-29 02:39:10,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:39:10,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082537794] [2023-11-29 02:39:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:39:10,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:39:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:11,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:39:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:11,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 02:39:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:11,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:39:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:11,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:39:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:11,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:39:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:11,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:39:11,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:39:11,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082537794] [2023-11-29 02:39:11,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082537794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:39:11,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:39:11,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:39:11,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962379808] [2023-11-29 02:39:11,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:39:11,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:39:11,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:39:11,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:39:11,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:39:11,160 INFO L87 Difference]: Start difference. First operand 9974 states and 15434 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:39:15,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:39:15,053 INFO L93 Difference]: Finished difference Result 30671 states and 49517 transitions. [2023-11-29 02:39:15,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:39:15,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 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 122 [2023-11-29 02:39:15,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:39:15,107 INFO L225 Difference]: With dead ends: 30671 [2023-11-29 02:39:15,108 INFO L226 Difference]: Without dead ends: 22636 [2023-11-29 02:39:15,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:39:15,136 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1291 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 2862 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 2961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:39:15,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 1813 Invalid, 2961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2862 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 02:39:15,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22636 states. [2023-11-29 02:39:16,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22636 to 17799. [2023-11-29 02:39:16,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17799 states, 15766 states have (on average 1.5681212736267918) internal successors, (24723), 15859 states have internal predecessors, (24723), 1353 states have call successors, (1353), 553 states have call predecessors, (1353), 678 states have return successors, (2246), 1451 states have call predecessors, (2246), 1349 states have call successors, (2246) [2023-11-29 02:39:16,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17799 states to 17799 states and 28322 transitions. [2023-11-29 02:39:16,402 INFO L78 Accepts]: Start accepts. Automaton has 17799 states and 28322 transitions. Word has length 122 [2023-11-29 02:39:16,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:39:16,403 INFO L495 AbstractCegarLoop]: Abstraction has 17799 states and 28322 transitions. [2023-11-29 02:39:16,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:39:16,403 INFO L276 IsEmpty]: Start isEmpty. Operand 17799 states and 28322 transitions. [2023-11-29 02:39:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:39:16,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:39:16,413 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:39:16,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 02:39:16,413 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:39:16,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:39:16,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1828564463, now seen corresponding path program 1 times [2023-11-29 02:39:16,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:39:16,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427903683] [2023-11-29 02:39:16,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:39:16,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:39:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:16,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:39:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:16,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 02:39:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:39:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:16,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:39:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:16,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:39:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:39:16,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:39:16,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427903683] [2023-11-29 02:39:16,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427903683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:39:16,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:39:16,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:39:16,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497931666] [2023-11-29 02:39:16,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:39:16,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:39:16,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:39:16,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:39:16,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:39:16,619 INFO L87 Difference]: Start difference. First operand 17799 states and 28322 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:39:21,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:39:21,313 INFO L93 Difference]: Finished difference Result 58686 states and 96275 transitions. [2023-11-29 02:39:21,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:39:21,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 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 122 [2023-11-29 02:39:21,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:39:21,434 INFO L225 Difference]: With dead ends: 58686 [2023-11-29 02:39:21,435 INFO L226 Difference]: Without dead ends: 42826 [2023-11-29 02:39:21,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:39:21,471 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1290 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 2849 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:39:21,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1317 Valid, 1813 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2849 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 02:39:21,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42826 states. [2023-11-29 02:39:23,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42826 to 33512. [2023-11-29 02:39:23,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33512 states, 29943 states have (on average 1.5823731757004975) internal successors, (47381), 30100 states have internal predecessors, (47381), 2441 states have call successors, (2441), 937 states have call predecessors, (2441), 1126 states have return successors, (4856), 2603 states have call predecessors, (4856), 2437 states have call successors, (4856) [2023-11-29 02:39:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33512 states to 33512 states and 54678 transitions. [2023-11-29 02:39:23,865 INFO L78 Accepts]: Start accepts. Automaton has 33512 states and 54678 transitions. Word has length 122 [2023-11-29 02:39:23,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:39:23,865 INFO L495 AbstractCegarLoop]: Abstraction has 33512 states and 54678 transitions. [2023-11-29 02:39:23,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:39:23,865 INFO L276 IsEmpty]: Start isEmpty. Operand 33512 states and 54678 transitions. [2023-11-29 02:39:23,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:39:23,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:39:23,892 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:39:23,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 02:39:23,893 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:39:23,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:39:23,893 INFO L85 PathProgramCache]: Analyzing trace with hash -865331727, now seen corresponding path program 1 times [2023-11-29 02:39:23,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:39:23,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908147440] [2023-11-29 02:39:23,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:39:23,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:39:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:23,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:39:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:24,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 02:39:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:24,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:39:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:24,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:39:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:24,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:39:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:24,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:39:24,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:39:24,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908147440] [2023-11-29 02:39:24,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908147440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:39:24,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:39:24,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:39:24,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829998507] [2023-11-29 02:39:24,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:39:24,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:39:24,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:39:24,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:39:24,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:39:24,126 INFO L87 Difference]: Start difference. First operand 33512 states and 54678 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:39:31,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:39:31,164 INFO L93 Difference]: Finished difference Result 128541 states and 213531 transitions. [2023-11-29 02:39:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:39:31,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 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 122 [2023-11-29 02:39:31,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:39:31,468 INFO L225 Difference]: With dead ends: 128541 [2023-11-29 02:39:31,468 INFO L226 Difference]: Without dead ends: 96968 [2023-11-29 02:39:31,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:39:31,569 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1363 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 3316 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 3417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:39:31,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 1806 Invalid, 3417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3316 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 02:39:31,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96968 states. [2023-11-29 02:39:35,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96968 to 64809. [2023-11-29 02:39:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64809 states, 58296 states have (on average 1.5911726362014547) internal successors, (92759), 58581 states have internal predecessors, (92759), 4489 states have call successors, (4489), 1705 states have call predecessors, (4489), 2022 states have return successors, (11406), 4779 states have call predecessors, (11406), 4485 states have call successors, (11406) [2023-11-29 02:39:35,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64809 states to 64809 states and 108654 transitions. [2023-11-29 02:39:35,576 INFO L78 Accepts]: Start accepts. Automaton has 64809 states and 108654 transitions. Word has length 122 [2023-11-29 02:39:35,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:39:35,577 INFO L495 AbstractCegarLoop]: Abstraction has 64809 states and 108654 transitions. [2023-11-29 02:39:35,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:39:35,577 INFO L276 IsEmpty]: Start isEmpty. Operand 64809 states and 108654 transitions. [2023-11-29 02:39:35,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:39:35,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:39:35,612 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:39:35,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 02:39:35,612 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:39:35,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:39:35,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1922062929, now seen corresponding path program 1 times [2023-11-29 02:39:35,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:39:35,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750134293] [2023-11-29 02:39:35,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:39:35,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:39:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:39:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:35,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 02:39:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:35,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:39:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:35,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:39:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:35,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:39:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:39:35,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:39:35,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750134293] [2023-11-29 02:39:35,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750134293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:39:35,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:39:35,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:39:35,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637500148] [2023-11-29 02:39:35,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:39:35,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:39:35,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:39:35,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:39:35,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:39:35,812 INFO L87 Difference]: Start difference. First operand 64809 states and 108654 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:39:45,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:39:45,520 INFO L93 Difference]: Finished difference Result 250844 states and 426033 transitions. [2023-11-29 02:39:45,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:39:45,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 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 122 [2023-11-29 02:39:45,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:39:46,130 INFO L225 Difference]: With dead ends: 250844 [2023-11-29 02:39:46,130 INFO L226 Difference]: Without dead ends: 187974 [2023-11-29 02:39:46,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:39:46,307 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1552 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 2807 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:39:46,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 1802 Invalid, 2909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2807 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 02:39:46,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187974 states. [2023-11-29 02:39:54,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187974 to 124842. [2023-11-29 02:39:54,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124842 states, 112569 states have (on average 1.591566061704377) internal successors, (179161), 113110 states have internal predecessors, (179161), 8457 states have call successors, (8457), 3241 states have call predecessors, (8457), 3814 states have return successors, (28752), 9003 states have call predecessors, (28752), 8453 states have call successors, (28752) [2023-11-29 02:39:54,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124842 states to 124842 states and 216370 transitions. [2023-11-29 02:39:54,987 INFO L78 Accepts]: Start accepts. Automaton has 124842 states and 216370 transitions. Word has length 122 [2023-11-29 02:39:54,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:39:54,987 INFO L495 AbstractCegarLoop]: Abstraction has 124842 states and 216370 transitions. [2023-11-29 02:39:54,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:39:54,988 INFO L276 IsEmpty]: Start isEmpty. Operand 124842 states and 216370 transitions. [2023-11-29 02:39:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:39:55,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:39:55,312 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:39:55,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 02:39:55,312 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:39:55,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:39:55,313 INFO L85 PathProgramCache]: Analyzing trace with hash -570677711, now seen corresponding path program 1 times [2023-11-29 02:39:55,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:39:55,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041312777] [2023-11-29 02:39:55,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:39:55,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:39:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:39:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:55,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 02:39:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:55,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:39:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:55,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:39:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:55,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:39:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:39:55,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:39:55,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:39:55,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041312777] [2023-11-29 02:39:55,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041312777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:39:55,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:39:55,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:39:55,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458711482] [2023-11-29 02:39:55,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:39:55,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:39:55,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:39:55,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:39:55,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:39:55,497 INFO L87 Difference]: Start difference. First operand 124842 states and 216370 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:40:10,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:10,977 INFO L93 Difference]: Finished difference Result 475481 states and 835763 transitions. [2023-11-29 02:40:10,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:40:10,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 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 122 [2023-11-29 02:40:10,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:40:12,604 INFO L225 Difference]: With dead ends: 475481 [2023-11-29 02:40:12,604 INFO L226 Difference]: Without dead ends: 352578 [2023-11-29 02:40:13,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:40:13,005 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1478 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 2781 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 2883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:40:13,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1806 Invalid, 2883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2781 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 02:40:13,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352578 states. [2023-11-29 02:40:29,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352578 to 247980. [2023-11-29 02:40:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247980 states, 224443 states have (on average 1.5955454168764454) internal successors, (358109), 225496 states have internal predecessors, (358109), 16137 states have call successors, (16137), 6313 states have call predecessors, (16137), 7398 states have return successors, (76310), 17195 states have call predecessors, (76310), 16133 states have call successors, (76310) [2023-11-29 02:40:31,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247980 states to 247980 states and 450556 transitions. [2023-11-29 02:40:31,301 INFO L78 Accepts]: Start accepts. Automaton has 247980 states and 450556 transitions. Word has length 122 [2023-11-29 02:40:31,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:40:31,302 INFO L495 AbstractCegarLoop]: Abstraction has 247980 states and 450556 transitions. [2023-11-29 02:40:31,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:40:31,302 INFO L276 IsEmpty]: Start isEmpty. Operand 247980 states and 450556 transitions. [2023-11-29 02:40:31,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:40:31,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:40:31,443 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:40:31,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 02:40:31,443 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:40:31,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:40:31,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1454186701, now seen corresponding path program 1 times [2023-11-29 02:40:31,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:40:31,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750996077] [2023-11-29 02:40:31,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:40:31,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:40:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:31,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:40:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:31,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 02:40:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:31,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:40:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:31,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:40:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:31,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:40:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:40:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:40:31,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:40:31,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750996077] [2023-11-29 02:40:31,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750996077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:40:31,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:40:31,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:40:31,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88795110] [2023-11-29 02:40:31,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:40:31,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:40:31,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:40:31,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:40:31,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:40:31,817 INFO L87 Difference]: Start difference. First operand 247980 states and 450556 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:40:59,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:40:59,430 INFO L93 Difference]: Finished difference Result 933465 states and 1721035 transitions. [2023-11-29 02:40:59,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:40:59,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 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 122 [2023-11-29 02:40:59,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:41:02,907 INFO L225 Difference]: With dead ends: 933465 [2023-11-29 02:41:02,907 INFO L226 Difference]: Without dead ends: 687424 [2023-11-29 02:41:04,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:41:04,234 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1442 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:41:04,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1806 Invalid, 2870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2768 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 02:41:04,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687424 states. [2023-11-29 02:41:37,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687424 to 494253. [2023-11-29 02:41:37,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494253 states, 448700 states have (on average 1.59800089146423) internal successors, (717023), 450777 states have internal predecessors, (717023), 30985 states have call successors, (30985), 12457 states have call predecessors, (30985), 14566 states have return successors, (210280), 33067 states have call predecessors, (210280), 30981 states have call successors, (210280) [2023-11-29 02:41:41,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494253 states to 494253 states and 958288 transitions. [2023-11-29 02:41:41,441 INFO L78 Accepts]: Start accepts. Automaton has 494253 states and 958288 transitions. Word has length 122 [2023-11-29 02:41:41,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:41:41,441 INFO L495 AbstractCegarLoop]: Abstraction has 494253 states and 958288 transitions. [2023-11-29 02:41:41,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:41:41,441 INFO L276 IsEmpty]: Start isEmpty. Operand 494253 states and 958288 transitions. [2023-11-29 02:41:41,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 02:41:41,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:41:41,660 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:41:41,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 02:41:41,660 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:41:41,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:41:41,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1482686991, now seen corresponding path program 1 times [2023-11-29 02:41:41,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:41:41,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083439909] [2023-11-29 02:41:41,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:41:41,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:41:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:41,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:41:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:41,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-29 02:41:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:41,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:41:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:41,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 02:41:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:41,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 02:41:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:41:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:41:41,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:41:41,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083439909] [2023-11-29 02:41:41,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083439909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:41:41,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:41:41,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:41:41,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828718251] [2023-11-29 02:41:41,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:41:41,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:41:41,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:41:41,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:41:41,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:41:41,848 INFO L87 Difference]: Start difference. First operand 494253 states and 958288 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 5 states have internal predecessors, (111), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)