./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.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_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/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_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/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_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/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 57a0d461468e871620bb6a0a3de7e8bdfa4741915d12326365887ea97e191d16 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:24:51,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:24:51,971 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 02:24:51,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:24:51,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:24:52,000 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:24:52,001 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:24:52,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:24:52,003 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:24:52,003 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:24:52,004 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:24:52,004 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:24:52,005 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:24:52,005 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:24:52,006 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:24:52,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:24:52,007 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:24:52,007 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:24:52,008 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:24:52,008 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:24:52,009 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:24:52,014 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:24:52,014 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:24:52,014 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:24:52,015 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:24:52,015 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:24:52,015 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:24:52,016 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:24:52,016 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:24:52,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:24:52,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:24:52,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:24:52,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:24:52,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:24:52,018 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:24:52,018 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:24:52,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:24:52,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:24:52,019 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:24:52,019 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:24:52,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:24:52,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:24:52,020 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_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57a0d461468e871620bb6a0a3de7e8bdfa4741915d12326365887ea97e191d16 [2023-11-29 02:24:52,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:24:52,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:24:52,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:24:52,270 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:24:52,270 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:24:52,271 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c [2023-11-29 02:24:54,999 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:24:55,215 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:24:55,215 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c [2023-11-29 02:24:55,235 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/data/7b4262475/2f96ba448b6e49e4a77b53cdd1b22f56/FLAG8583937b8 [2023-11-29 02:24:55,249 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/data/7b4262475/2f96ba448b6e49e4a77b53cdd1b22f56 [2023-11-29 02:24:55,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:24:55,253 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:24:55,254 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:24:55,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:24:55,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:24:55,260 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:24:55" (1/1) ... [2023-11-29 02:24:55,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5629c85a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:24:55, skipping insertion in model container [2023-11-29 02:24:55,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:24:55" (1/1) ... [2023-11-29 02:24:55,323 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:24:55,479 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_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c[911,924] [2023-11-29 02:24:55,540 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_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c[8416,8429] [2023-11-29 02:24:55,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:24:55,652 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:24:55,665 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_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c[911,924] [2023-11-29 02:24:55,684 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_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.12.cil-2.c[8416,8429] [2023-11-29 02:24:55,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:24:55,760 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:24:55,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:24:55 WrapperNode [2023-11-29 02:24:55,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:24:55,762 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:24:55,762 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:24:55,762 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:24:55,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:24:55" (1/1) ... [2023-11-29 02:24:55,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:24:55" (1/1) ... [2023-11-29 02:24:55,841 INFO L138 Inliner]: procedures = 79, calls = 97, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 1108 [2023-11-29 02:24:55,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:24:55,842 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:24:55,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:24:55,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:24:55,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:24:55" (1/1) ... [2023-11-29 02:24:55,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:24:55" (1/1) ... [2023-11-29 02:24:55,861 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:24:55" (1/1) ... [2023-11-29 02:24:55,884 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 02:24:55,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:24:55" (1/1) ... [2023-11-29 02:24:55,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:24:55" (1/1) ... [2023-11-29 02:24:55,905 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:24:55" (1/1) ... [2023-11-29 02:24:55,922 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:24:55" (1/1) ... [2023-11-29 02:24:55,926 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:24:55" (1/1) ... [2023-11-29 02:24:55,932 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:24:55" (1/1) ... [2023-11-29 02:24:55,940 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:24:55,941 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:24:55,941 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:24:55,941 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:24:55,943 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:24:55" (1/1) ... [2023-11-29 02:24:55,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:24:55,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:24:55,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:24:55,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:24:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:24:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-29 02:24:56,011 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-29 02:24:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-29 02:24:56,012 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-29 02:24:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-29 02:24:56,012 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-29 02:24:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-29 02:24:56,013 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-29 02:24:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-11-29 02:24:56,013 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-11-29 02:24:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-29 02:24:56,014 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-29 02:24:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-29 02:24:56,014 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-29 02:24:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-11-29 02:24:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-11-29 02:24:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-29 02:24:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-29 02:24:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-11-29 02:24:56,015 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-11-29 02:24:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-29 02:24:56,016 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-29 02:24:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:24:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-29 02:24:56,016 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-29 02:24:56,016 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-11-29 02:24:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-11-29 02:24:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:24:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:24:56,017 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-29 02:24:56,017 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-29 02:24:56,158 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:24:56,160 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:24:56,936 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2023-11-29 02:24:56,937 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 02:24:57,036 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:24:57,112 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:24:57,112 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-11-29 02:24:57,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:24:57 BoogieIcfgContainer [2023-11-29 02:24:57,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:24:57,116 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:24:57,116 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:24:57,119 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:24:57,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:24:55" (1/3) ... [2023-11-29 02:24:57,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc5e41d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:24:57, skipping insertion in model container [2023-11-29 02:24:57,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:24:55" (2/3) ... [2023-11-29 02:24:57,120 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc5e41d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:24:57, skipping insertion in model container [2023-11-29 02:24:57,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:24:57" (3/3) ... [2023-11-29 02:24:57,122 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.12.cil-2.c [2023-11-29 02:24:57,141 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:24:57,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 02:24:57,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:24:57,207 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;@38a6abcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:24:57,208 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 02:24:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 452 states, 393 states have (on average 1.7150127226463103) internal successors, (674), 399 states have internal predecessors, (674), 42 states have call successors, (42), 14 states have call predecessors, (42), 14 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-29 02:24:57,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 02:24:57,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:24:57,228 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 02:24:57,228 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:24:57,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:24:57,233 INFO L85 PathProgramCache]: Analyzing trace with hash -427732413, now seen corresponding path program 1 times [2023-11-29 02:24:57,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:24:57,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189926896] [2023-11-29 02:24:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:24:57,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:24:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:24:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:24:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:24:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:24:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:24:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:24:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 02:24:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:57,572 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 02:24:57,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:24:57,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189926896] [2023-11-29 02:24:57,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189926896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:24:57,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:24:57,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:24:57,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052270998] [2023-11-29 02:24:57,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:24:57,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:24:57,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:24:57,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:24:57,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:24:57,612 INFO L87 Difference]: Start difference. First operand has 452 states, 393 states have (on average 1.7150127226463103) internal successors, (674), 399 states have internal predecessors, (674), 42 states have call successors, (42), 14 states have call predecessors, (42), 14 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 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 02:24:58,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:24:58,784 INFO L93 Difference]: Finished difference Result 897 states and 1499 transitions. [2023-11-29 02:24:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:24:58,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 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 57 [2023-11-29 02:24:58,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:24:58,802 INFO L225 Difference]: With dead ends: 897 [2023-11-29 02:24:58,802 INFO L226 Difference]: Without dead ends: 464 [2023-11-29 02:24:58,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:24:58,813 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1053 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:24:58,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 1181 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 02:24:58,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-11-29 02:24:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 447. [2023-11-29 02:24:58,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 390 states have (on average 1.6102564102564103) internal successors, (628), 394 states have internal predecessors, (628), 42 states have call successors, (42), 14 states have call predecessors, (42), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-29 02:24:58,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 710 transitions. [2023-11-29 02:24:58,898 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 710 transitions. Word has length 57 [2023-11-29 02:24:58,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:24:58,899 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 710 transitions. [2023-11-29 02:24:58,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 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 02:24:58,899 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 710 transitions. [2023-11-29 02:24:58,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 02:24:58,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:24:58,904 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 02:24:58,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:24:58,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:24:58,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:24:58,905 INFO L85 PathProgramCache]: Analyzing trace with hash -412213695, now seen corresponding path program 1 times [2023-11-29 02:24:58,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:24:58,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139727488] [2023-11-29 02:24:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:24:58,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:24:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:59,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:24:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:59,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:24:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:59,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:24:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:59,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:24:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:59,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:24:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:59,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:24:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:59,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 02:24:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:24:59,135 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 02:24:59,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:24:59,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139727488] [2023-11-29 02:24:59,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139727488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:24:59,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:24:59,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 02:24:59,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721204376] [2023-11-29 02:24:59,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:24:59,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:24:59,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:24:59,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:24:59,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:24:59,139 INFO L87 Difference]: Start difference. First operand 447 states and 710 transitions. 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 02:25:00,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:00,488 INFO L93 Difference]: Finished difference Result 679 states and 1056 transitions. [2023-11-29 02:25:00,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:25:00,489 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 02:25:00,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:00,494 INFO L225 Difference]: With dead ends: 679 [2023-11-29 02:25:00,495 INFO L226 Difference]: Without dead ends: 585 [2023-11-29 02:25:00,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:25:00,497 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 1203 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:00,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 1524 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 02:25:00,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2023-11-29 02:25:00,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 548. [2023-11-29 02:25:00,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 469 states have (on average 1.584221748400853) internal successors, (743), 475 states have internal predecessors, (743), 55 states have call successors, (55), 21 states have call predecessors, (55), 22 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-11-29 02:25:00,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 856 transitions. [2023-11-29 02:25:00,544 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 856 transitions. Word has length 57 [2023-11-29 02:25:00,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:00,544 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 856 transitions. [2023-11-29 02:25:00,544 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 02:25:00,544 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 856 transitions. [2023-11-29 02:25:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 02:25:00,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:00,547 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 02:25:00,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:25:00,548 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:00,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:00,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1938760833, now seen corresponding path program 1 times [2023-11-29 02:25:00,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:00,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774317003] [2023-11-29 02:25:00,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:00,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:00,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:00,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:00,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:25:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:00,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:25:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:00,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:25:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:00,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:25:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:00,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 02:25:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:00,761 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 02:25:00,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:00,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774317003] [2023-11-29 02:25:00,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774317003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:00,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:00,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 02:25:00,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559444226] [2023-11-29 02:25:00,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:00,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:25:00,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:00,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:25:00,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:25:00,764 INFO L87 Difference]: Start difference. First operand 548 states and 856 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 02:25:02,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:02,353 INFO L93 Difference]: Finished difference Result 909 states and 1385 transitions. [2023-11-29 02:25:02,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 02:25:02,353 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 02:25:02,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:02,360 INFO L225 Difference]: With dead ends: 909 [2023-11-29 02:25:02,360 INFO L226 Difference]: Without dead ends: 721 [2023-11-29 02:25:02,362 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 02:25:02,363 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1718 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:02,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1752 Valid, 1780 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1857 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 02:25:02,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2023-11-29 02:25:02,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 649. [2023-11-29 02:25:02,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 548 states have (on average 1.563868613138686) internal successors, (857), 556 states have internal predecessors, (857), 68 states have call successors, (68), 28 states have call predecessors, (68), 31 states have return successors, (79), 68 states have call predecessors, (79), 66 states have call successors, (79) [2023-11-29 02:25:02,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1004 transitions. [2023-11-29 02:25:02,413 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1004 transitions. Word has length 57 [2023-11-29 02:25:02,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:02,413 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 1004 transitions. [2023-11-29 02:25:02,414 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 02:25:02,414 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1004 transitions. [2023-11-29 02:25:02,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 02:25:02,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:02,416 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 02:25:02,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:25:02,417 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:02,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:02,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1462720125, now seen corresponding path program 1 times [2023-11-29 02:25:02,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:02,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954409094] [2023-11-29 02:25:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:02,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:02,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:02,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:02,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:25:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:02,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:25:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:02,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:25:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:02,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 02:25:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:02,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 02:25:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:02,565 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 02:25:02,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:02,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954409094] [2023-11-29 02:25:02,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954409094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:02,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:02,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:25:02,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335016830] [2023-11-29 02:25:02,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:02,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:25:02,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:02,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:25:02,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:25:02,568 INFO L87 Difference]: Start difference. First operand 649 states and 1004 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 02:25:04,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:04,615 INFO L93 Difference]: Finished difference Result 2047 states and 3053 transitions. [2023-11-29 02:25:04,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 02:25:04,616 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 02:25:04,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:04,627 INFO L225 Difference]: With dead ends: 2047 [2023-11-29 02:25:04,628 INFO L226 Difference]: Without dead ends: 1746 [2023-11-29 02:25:04,630 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 02:25:04,632 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 4065 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:04,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4083 Valid, 2006 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 2082 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 02:25:04,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2023-11-29 02:25:04,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1613. [2023-11-29 02:25:04,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1307 states have (on average 1.4644223412394797) internal successors, (1914), 1330 states have internal predecessors, (1914), 178 states have call successors, (178), 111 states have call predecessors, (178), 126 states have return successors, (212), 174 states have call predecessors, (212), 176 states have call successors, (212) [2023-11-29 02:25:04,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2304 transitions. [2023-11-29 02:25:04,777 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2304 transitions. Word has length 57 [2023-11-29 02:25:04,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:04,778 INFO L495 AbstractCegarLoop]: Abstraction has 1613 states and 2304 transitions. [2023-11-29 02:25:04,778 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 02:25:04,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2304 transitions. [2023-11-29 02:25:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 02:25:04,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:04,780 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 02:25:04,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:25:04,780 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:04,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:04,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1271838702, now seen corresponding path program 1 times [2023-11-29 02:25:04,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:04,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087247504] [2023-11-29 02:25:04,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:04,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:04,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:04,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:04,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:25:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:04,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:25:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:04,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:04,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:25:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:04,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:25:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:04,933 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 02:25:04,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:04,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087247504] [2023-11-29 02:25:04,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087247504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:04,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:04,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 02:25:04,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348032081] [2023-11-29 02:25:04,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:04,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:25:04,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:04,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:25:04,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:25:04,935 INFO L87 Difference]: Start difference. First operand 1613 states and 2304 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 02:25:06,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:06,598 INFO L93 Difference]: Finished difference Result 3010 states and 4252 transitions. [2023-11-29 02:25:06,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:25:06,598 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 02:25:06,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:06,609 INFO L225 Difference]: With dead ends: 3010 [2023-11-29 02:25:06,610 INFO L226 Difference]: Without dead ends: 1751 [2023-11-29 02:25:06,613 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 02:25:06,614 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 634 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:06,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 2491 Invalid, 2326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:25:06,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2023-11-29 02:25:06,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1645. [2023-11-29 02:25:06,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1331 states have (on average 1.4515401953418483) internal successors, (1932), 1354 states have internal predecessors, (1932), 178 states have call successors, (178), 111 states have call predecessors, (178), 134 states have return successors, (220), 182 states have call predecessors, (220), 176 states have call successors, (220) [2023-11-29 02:25:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2330 transitions. [2023-11-29 02:25:06,769 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2330 transitions. Word has length 58 [2023-11-29 02:25:06,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:06,770 INFO L495 AbstractCegarLoop]: Abstraction has 1645 states and 2330 transitions. [2023-11-29 02:25:06,770 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 02:25:06,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2330 transitions. [2023-11-29 02:25:06,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 02:25:06,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:06,771 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 02:25:06,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:25:06,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:06,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:06,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1199452144, now seen corresponding path program 1 times [2023-11-29 02:25:06,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:06,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305317157] [2023-11-29 02:25:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:06,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:06,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:06,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:06,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:25:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:06,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:25:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:06,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 02:25:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:06,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 02:25:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:06,922 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 02:25:06,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:06,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305317157] [2023-11-29 02:25:06,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305317157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:06,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:06,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 02:25:06,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54456736] [2023-11-29 02:25:06,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:06,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:25:06,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:06,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:25:06,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:25:06,924 INFO L87 Difference]: Start difference. First operand 1645 states and 2330 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 02:25:09,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:09,311 INFO L93 Difference]: Finished difference Result 4904 states and 6891 transitions. [2023-11-29 02:25:09,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 02:25:09,312 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 02:25:09,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:09,324 INFO L225 Difference]: With dead ends: 4904 [2023-11-29 02:25:09,324 INFO L226 Difference]: Without dead ends: 2015 [2023-11-29 02:25:09,332 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 02:25:09,333 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 3713 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3731 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:09,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3731 Valid, 2424 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 02:25:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2023-11-29 02:25:09,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1859. [2023-11-29 02:25:09,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1473 states have (on average 1.3991853360488797) internal successors, (2061), 1498 states have internal predecessors, (2061), 218 states have call successors, (218), 139 states have call predecessors, (218), 166 states have return successors, (266), 224 states have call predecessors, (266), 216 states have call successors, (266) [2023-11-29 02:25:09,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2545 transitions. [2023-11-29 02:25:09,482 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2545 transitions. Word has length 58 [2023-11-29 02:25:09,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:09,482 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2545 transitions. [2023-11-29 02:25:09,482 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 02:25:09,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2545 transitions. [2023-11-29 02:25:09,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 02:25:09,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:09,485 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 02:25:09,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:25:09,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:09,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:09,486 INFO L85 PathProgramCache]: Analyzing trace with hash 2110301578, now seen corresponding path program 1 times [2023-11-29 02:25:09,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:09,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258290814] [2023-11-29 02:25:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:09,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:09,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:09,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:09,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:25:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:09,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:25:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:09,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:09,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:25:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 02:25:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:09,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 02:25:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:09,638 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 02:25:09,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:09,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258290814] [2023-11-29 02:25:09,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258290814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:09,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:09,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 02:25:09,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295278970] [2023-11-29 02:25:09,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:09,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:25:09,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:09,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:25:09,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:25:09,640 INFO L87 Difference]: Start difference. First operand 1859 states and 2545 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 02:25:10,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:10,923 INFO L93 Difference]: Finished difference Result 3544 states and 4807 transitions. [2023-11-29 02:25:10,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:25:10,924 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 02:25:10,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:10,937 INFO L225 Difference]: With dead ends: 3544 [2023-11-29 02:25:10,937 INFO L226 Difference]: Without dead ends: 2039 [2023-11-29 02:25:10,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:25:10,942 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 630 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 2455 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:10,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 2455 Invalid, 2271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2178 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 02:25:10,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2023-11-29 02:25:11,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 1907. [2023-11-29 02:25:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1509 states have (on average 1.385685884691849) internal successors, (2091), 1534 states have internal predecessors, (2091), 218 states have call successors, (218), 139 states have call predecessors, (218), 178 states have return successors, (278), 236 states have call predecessors, (278), 216 states have call successors, (278) [2023-11-29 02:25:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2587 transitions. [2023-11-29 02:25:11,092 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2587 transitions. Word has length 80 [2023-11-29 02:25:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:11,093 INFO L495 AbstractCegarLoop]: Abstraction has 1907 states and 2587 transitions. [2023-11-29 02:25:11,093 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 02:25:11,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2587 transitions. [2023-11-29 02:25:11,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 02:25:11,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:11,095 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 02:25:11,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:25:11,107 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:11,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:11,108 INFO L85 PathProgramCache]: Analyzing trace with hash -256393016, now seen corresponding path program 1 times [2023-11-29 02:25:11,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:11,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307801661] [2023-11-29 02:25:11,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:11,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:11,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:11,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:25:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:11,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:25:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:11,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:11,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:25:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:11,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 02:25:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:11,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 02:25:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:11,292 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 02:25:11,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:11,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307801661] [2023-11-29 02:25:11,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307801661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:11,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:11,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 02:25:11,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054427805] [2023-11-29 02:25:11,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:11,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:25:11,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:11,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:25:11,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:25:11,294 INFO L87 Difference]: Start difference. First operand 1907 states and 2587 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 02:25:12,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:12,473 INFO L93 Difference]: Finished difference Result 3306 states and 4423 transitions. [2023-11-29 02:25:12,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 02:25:12,473 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 02:25:12,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:12,481 INFO L225 Difference]: With dead ends: 3306 [2023-11-29 02:25:12,481 INFO L226 Difference]: Without dead ends: 1974 [2023-11-29 02:25:12,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:25:12,484 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 1717 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:12,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1749 Valid, 1575 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 02:25:12,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2023-11-29 02:25:12,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1699. [2023-11-29 02:25:12,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1354 states have (on average 1.3929098966026587) internal successors, (1886), 1374 states have internal predecessors, (1886), 190 states have call successors, (190), 120 states have call predecessors, (190), 153 states have return successors, (238), 206 states have call predecessors, (238), 188 states have call successors, (238) [2023-11-29 02:25:12,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2314 transitions. [2023-11-29 02:25:12,620 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2314 transitions. Word has length 80 [2023-11-29 02:25:12,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:12,621 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2314 transitions. [2023-11-29 02:25:12,621 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 02:25:12,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2314 transitions. [2023-11-29 02:25:12,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 02:25:12,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:12,623 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 02:25:12,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:25:12,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:12,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:12,624 INFO L85 PathProgramCache]: Analyzing trace with hash 167253706, now seen corresponding path program 1 times [2023-11-29 02:25:12,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:12,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237374457] [2023-11-29 02:25:12,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:12,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:12,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:12,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:12,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:25:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:12,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:25:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:12,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:12,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:25:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:12,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 02:25:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:12,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 02:25:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:12,741 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 02:25:12,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:12,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237374457] [2023-11-29 02:25:12,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237374457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:12,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:12,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:25:12,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645010363] [2023-11-29 02:25:12,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:12,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:25:12,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:12,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:25:12,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:25:12,743 INFO L87 Difference]: Start difference. First operand 1699 states and 2314 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 02:25:13,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:13,604 INFO L93 Difference]: Finished difference Result 3148 states and 4243 transitions. [2023-11-29 02:25:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:25:13,604 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 02:25:13,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:13,614 INFO L225 Difference]: With dead ends: 3148 [2023-11-29 02:25:13,614 INFO L226 Difference]: Without dead ends: 1804 [2023-11-29 02:25:13,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:25:13,619 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1255 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:13,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 1419 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:25:13,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2023-11-29 02:25:13,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1699. [2023-11-29 02:25:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1354 states have (on average 1.3663220088626293) internal successors, (1850), 1374 states have internal predecessors, (1850), 190 states have call successors, (190), 120 states have call predecessors, (190), 153 states have return successors, (238), 206 states have call predecessors, (238), 188 states have call successors, (238) [2023-11-29 02:25:13,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2278 transitions. [2023-11-29 02:25:13,752 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2278 transitions. Word has length 80 [2023-11-29 02:25:13,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:13,753 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2278 transitions. [2023-11-29 02:25:13,753 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 02:25:13,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2278 transitions. [2023-11-29 02:25:13,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 02:25:13,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:13,754 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 02:25:13,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:25:13,755 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:13,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:13,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1967164953, now seen corresponding path program 1 times [2023-11-29 02:25:13,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:13,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919168152] [2023-11-29 02:25:13,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:13,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:13,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:13,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:13,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:25:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:13,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:25:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:13,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:13,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:25:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:13,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 02:25:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:13,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 02:25:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:13,914 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 02:25:13,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:13,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919168152] [2023-11-29 02:25:13,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919168152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:13,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:13,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 02:25:13,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656311693] [2023-11-29 02:25:13,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:13,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:25:13,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:13,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:25:13,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:25:13,917 INFO L87 Difference]: Start difference. First operand 1699 states and 2278 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 02:25:15,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:15,780 INFO L93 Difference]: Finished difference Result 3920 states and 5164 transitions. [2023-11-29 02:25:15,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 02:25:15,780 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 02:25:15,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:15,791 INFO L225 Difference]: With dead ends: 3920 [2023-11-29 02:25:15,791 INFO L226 Difference]: Without dead ends: 2435 [2023-11-29 02:25:15,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2023-11-29 02:25:15,794 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 2380 mSDsluCounter, 1564 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 2297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:15,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2423 Valid, 1924 Invalid, 2297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:25:15,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2023-11-29 02:25:15,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 2271. [2023-11-29 02:25:15,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 1772 states have (on average 1.322234762979684) internal successors, (2343), 1800 states have internal predecessors, (2343), 267 states have call successors, (267), 168 states have call predecessors, (267), 230 states have return successors, (369), 304 states have call predecessors, (369), 265 states have call successors, (369) [2023-11-29 02:25:15,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 2979 transitions. [2023-11-29 02:25:15,920 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 2979 transitions. Word has length 81 [2023-11-29 02:25:15,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:15,921 INFO L495 AbstractCegarLoop]: Abstraction has 2271 states and 2979 transitions. [2023-11-29 02:25:15,921 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 02:25:15,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 2979 transitions. [2023-11-29 02:25:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-29 02:25:15,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:15,923 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:25:15,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:25:15,923 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:15,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:15,924 INFO L85 PathProgramCache]: Analyzing trace with hash -985991477, now seen corresponding path program 1 times [2023-11-29 02:25:15,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:15,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222937511] [2023-11-29 02:25:15,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:15,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:25:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:25:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:25:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 02:25:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 02:25:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:25:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 02:25:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 02:25:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:25:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:25:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 02:25:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 02:25:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 02:25:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 02:25:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-29 02:25:16,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:16,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222937511] [2023-11-29 02:25:16,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222937511] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:25:16,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450688239] [2023-11-29 02:25:16,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:16,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:25:16,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:25:16,098 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:25:16,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:25:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:16,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:25:16,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:25:16,412 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 02:25:16,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:25:16,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450688239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:16,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:25:16,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-11-29 02:25:16,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355192761] [2023-11-29 02:25:16,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:16,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:25:16,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:16,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:25:16,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:25:16,414 INFO L87 Difference]: Start difference. First operand 2271 states and 2979 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-29 02:25:16,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:16,744 INFO L93 Difference]: Finished difference Result 5867 states and 7478 transitions. [2023-11-29 02:25:16,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:25:16,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2023-11-29 02:25:16,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:16,761 INFO L225 Difference]: With dead ends: 5867 [2023-11-29 02:25:16,761 INFO L226 Difference]: Without dead ends: 4021 [2023-11-29 02:25:16,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:25:16,766 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 57 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:16,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 1311 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:25:16,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2023-11-29 02:25:17,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 3981. [2023-11-29 02:25:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3981 states, 3069 states have (on average 1.2828282828282829) internal successors, (3937), 3120 states have internal predecessors, (3937), 474 states have call successors, (474), 329 states have call predecessors, (474), 436 states have return successors, (637), 533 states have call predecessors, (637), 472 states have call successors, (637) [2023-11-29 02:25:17,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3981 states to 3981 states and 5048 transitions. [2023-11-29 02:25:17,099 INFO L78 Accepts]: Start accepts. Automaton has 3981 states and 5048 transitions. Word has length 145 [2023-11-29 02:25:17,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:17,099 INFO L495 AbstractCegarLoop]: Abstraction has 3981 states and 5048 transitions. [2023-11-29 02:25:17,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-29 02:25:17,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3981 states and 5048 transitions. [2023-11-29 02:25:17,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-29 02:25:17,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:17,103 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:25:17,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:25:17,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 02:25:17,304 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:17,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:17,305 INFO L85 PathProgramCache]: Analyzing trace with hash 526209918, now seen corresponding path program 1 times [2023-11-29 02:25:17,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:17,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559337076] [2023-11-29 02:25:17,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:17,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:25:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:25:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:25:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 02:25:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 02:25:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:25:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 02:25:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 02:25:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:25:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:25:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:25:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 02:25:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 02:25:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:25:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:25:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 02:25:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-29 02:25:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-29 02:25:17,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:17,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559337076] [2023-11-29 02:25:17,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559337076] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:25:17,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809170154] [2023-11-29 02:25:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:17,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:25:17,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:25:17,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:25:17,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:25:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:17,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:25:17,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:25:17,908 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-29 02:25:17,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:25:17,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809170154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:17,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:25:17,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-11-29 02:25:17,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405832330] [2023-11-29 02:25:17,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:17,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:25:17,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:17,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:25:17,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:25:17,911 INFO L87 Difference]: Start difference. First operand 3981 states and 5048 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 02:25:18,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:18,400 INFO L93 Difference]: Finished difference Result 11233 states and 13988 transitions. [2023-11-29 02:25:18,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:25:18,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 175 [2023-11-29 02:25:18,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:18,426 INFO L225 Difference]: With dead ends: 11233 [2023-11-29 02:25:18,426 INFO L226 Difference]: Without dead ends: 7607 [2023-11-29 02:25:18,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:25:18,433 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 48 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:18,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1280 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 02:25:18,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7607 states. [2023-11-29 02:25:18,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7607 to 7599. [2023-11-29 02:25:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7599 states, 5815 states have (on average 1.2564058469475494) internal successors, (7306), 5913 states have internal predecessors, (7306), 916 states have call successors, (916), 651 states have call predecessors, (916), 866 states have return successors, (1244), 1036 states have call predecessors, (1244), 914 states have call successors, (1244) [2023-11-29 02:25:18,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7599 states to 7599 states and 9466 transitions. [2023-11-29 02:25:18,994 INFO L78 Accepts]: Start accepts. Automaton has 7599 states and 9466 transitions. Word has length 175 [2023-11-29 02:25:18,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:18,994 INFO L495 AbstractCegarLoop]: Abstraction has 7599 states and 9466 transitions. [2023-11-29 02:25:18,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-29 02:25:18,995 INFO L276 IsEmpty]: Start isEmpty. Operand 7599 states and 9466 transitions. [2023-11-29 02:25:18,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-29 02:25:18,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:19,000 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:25:19,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:25:19,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 02:25:19,200 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:19,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:19,201 INFO L85 PathProgramCache]: Analyzing trace with hash 131843132, now seen corresponding path program 1 times [2023-11-29 02:25:19,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:19,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422692785] [2023-11-29 02:25:19,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:19,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 02:25:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:25:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:25:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 02:25:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 02:25:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 02:25:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 02:25:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 02:25:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 02:25:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:25:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 02:25:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 02:25:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 02:25:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 02:25:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 02:25:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:25:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 02:25:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-29 02:25:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-29 02:25:19,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:19,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422692785] [2023-11-29 02:25:19,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422692785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:25:19,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532089351] [2023-11-29 02:25:19,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:19,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:25:19,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:25:19,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:25:19,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:25:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:19,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:25:19,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:25:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-29 02:25:19,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:25:19,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532089351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:19,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:25:19,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-11-29 02:25:19,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772469079] [2023-11-29 02:25:19,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:19,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:25:19,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:19,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:25:19,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:25:19,824 INFO L87 Difference]: Start difference. First operand 7599 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-29 02:25:20,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:20,368 INFO L93 Difference]: Finished difference Result 13585 states and 17138 transitions. [2023-11-29 02:25:20,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:25:20,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 175 [2023-11-29 02:25:20,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:20,372 INFO L225 Difference]: With dead ends: 13585 [2023-11-29 02:25:20,372 INFO L226 Difference]: Without dead ends: 347 [2023-11-29 02:25:20,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:25:20,398 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 588 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:20,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 633 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:25:20,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-29 02:25:20,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2023-11-29 02:25:20,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 314 states have (on average 1.6337579617834395) internal successors, (513), 315 states have internal predecessors, (513), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 02:25:20,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 565 transitions. [2023-11-29 02:25:20,421 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 565 transitions. Word has length 175 [2023-11-29 02:25:20,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:20,421 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 565 transitions. [2023-11-29 02:25:20,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-29 02:25:20,422 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 565 transitions. [2023-11-29 02:25:20,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 02:25:20,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:20,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:20,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:25:20,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab8a1c6-6314-4d0d-aec6-0b8721cb1bf5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:25:20,626 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:20,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:20,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1462659871, now seen corresponding path program 1 times [2023-11-29 02:25:20,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:20,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956579999] [2023-11-29 02:25:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:20,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:20,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:20,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:25:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:20,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:25:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:20,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:25:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:20,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 02:25:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:20,876 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 02:25:20,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:20,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956579999] [2023-11-29 02:25:20,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956579999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:20,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:20,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:25:20,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524016010] [2023-11-29 02:25:20,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:20,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:25:20,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:20,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:25:20,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:25:20,879 INFO L87 Difference]: Start difference. First operand 347 states and 565 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:25:22,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:22,691 INFO L93 Difference]: Finished difference Result 819 states and 1356 transitions. [2023-11-29 02:25:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:25:22,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-29 02:25:22,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:22,694 INFO L225 Difference]: With dead ends: 819 [2023-11-29 02:25:22,694 INFO L226 Difference]: Without dead ends: 477 [2023-11-29 02:25:22,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:25:22,695 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 977 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:22,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 622 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 02:25:22,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-11-29 02:25:22,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 347. [2023-11-29 02:25:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 314 states have (on average 1.6305732484076434) internal successors, (512), 315 states have internal predecessors, (512), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 02:25:22,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 564 transitions. [2023-11-29 02:25:22,711 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 564 transitions. Word has length 161 [2023-11-29 02:25:22,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:22,711 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 564 transitions. [2023-11-29 02:25:22,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:25:22,712 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 564 transitions. [2023-11-29 02:25:22,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 02:25:22,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:22,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:22,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 02:25:22,715 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:22,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:22,715 INFO L85 PathProgramCache]: Analyzing trace with hash 306811743, now seen corresponding path program 1 times [2023-11-29 02:25:22,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:22,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857423766] [2023-11-29 02:25:22,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:22,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:22,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:22,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:25:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:22,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:25:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:22,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:25:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:22,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 02:25:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:22,950 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 02:25:22,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:22,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857423766] [2023-11-29 02:25:22,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857423766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:22,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:22,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:25:22,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899865517] [2023-11-29 02:25:22,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:22,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:25:22,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:22,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:25:22,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:25:22,952 INFO L87 Difference]: Start difference. First operand 347 states and 564 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:25:25,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:25,657 INFO L93 Difference]: Finished difference Result 877 states and 1457 transitions. [2023-11-29 02:25:25,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:25:25,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-29 02:25:25,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:25,660 INFO L225 Difference]: With dead ends: 877 [2023-11-29 02:25:25,660 INFO L226 Difference]: Without dead ends: 543 [2023-11-29 02:25:25,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-29 02:25:25,661 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1248 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:25,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 1122 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 02:25:25,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2023-11-29 02:25:25,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 349. [2023-11-29 02:25:25,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 316 states have (on average 1.6234177215189873) internal successors, (513), 317 states have internal predecessors, (513), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 02:25:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 565 transitions. [2023-11-29 02:25:25,685 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 565 transitions. Word has length 161 [2023-11-29 02:25:25,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:25,685 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 565 transitions. [2023-11-29 02:25:25,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:25:25,685 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 565 transitions. [2023-11-29 02:25:25,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 02:25:25,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:25,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:25,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 02:25:25,688 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:25,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:25,688 INFO L85 PathProgramCache]: Analyzing trace with hash -23242785, now seen corresponding path program 1 times [2023-11-29 02:25:25,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:25,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119203893] [2023-11-29 02:25:25,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:25,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:25,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:25,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:25:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:25,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:25:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:25,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:25:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:25,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 02:25:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:25,996 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 02:25:25,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:25,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119203893] [2023-11-29 02:25:25,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119203893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:25,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:25,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 02:25:25,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160691390] [2023-11-29 02:25:25,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:25,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:25:25,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:25,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:25:25,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:25:25,999 INFO L87 Difference]: Start difference. First operand 349 states and 565 transitions. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:25:30,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:30,520 INFO L93 Difference]: Finished difference Result 1364 states and 2281 transitions. [2023-11-29 02:25:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 02:25:30,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-29 02:25:30,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:30,523 INFO L225 Difference]: With dead ends: 1364 [2023-11-29 02:25:30,524 INFO L226 Difference]: Without dead ends: 1034 [2023-11-29 02:25:30,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-11-29 02:25:30,525 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 1724 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 3426 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 3539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 3426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:30,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1745 Valid, 1560 Invalid, 3539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 3426 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 02:25:30,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-11-29 02:25:30,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 703. [2023-11-29 02:25:30,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 642 states have (on average 1.6308411214953271) internal successors, (1047), 644 states have internal predecessors, (1047), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-11-29 02:25:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1144 transitions. [2023-11-29 02:25:30,556 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1144 transitions. Word has length 161 [2023-11-29 02:25:30,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:30,556 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 1144 transitions. [2023-11-29 02:25:30,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:25:30,557 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1144 transitions. [2023-11-29 02:25:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 02:25:30,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:30,558 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:30,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 02:25:30,558 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:30,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:30,558 INFO L85 PathProgramCache]: Analyzing trace with hash -433124899, now seen corresponding path program 1 times [2023-11-29 02:25:30,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:30,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873106723] [2023-11-29 02:25:30,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:30,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:30,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:30,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:25:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:30,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:25:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:30,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:25:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:30,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 02:25:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:30,900 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 02:25:30,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:30,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873106723] [2023-11-29 02:25:30,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873106723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:30,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:30,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 02:25:30,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560740127] [2023-11-29 02:25:30,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:30,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 02:25:30,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:30,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 02:25:30,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:25:30,903 INFO L87 Difference]: Start difference. First operand 703 states and 1144 transitions. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:25:36,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:36,431 INFO L93 Difference]: Finished difference Result 2233 states and 3730 transitions. [2023-11-29 02:25:36,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 02:25:36,432 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-29 02:25:36,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:36,438 INFO L225 Difference]: With dead ends: 2233 [2023-11-29 02:25:36,438 INFO L226 Difference]: Without dead ends: 1549 [2023-11-29 02:25:36,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2023-11-29 02:25:36,442 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1677 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 5256 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 5322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 5256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:36,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1698 Valid, 2830 Invalid, 5322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 5256 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 02:25:36,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2023-11-29 02:25:36,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1035. [2023-11-29 02:25:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 946 states have (on average 1.620507399577167) internal successors, (1533), 949 states have internal predecessors, (1533), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2023-11-29 02:25:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1674 transitions. [2023-11-29 02:25:36,515 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1674 transitions. Word has length 161 [2023-11-29 02:25:36,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:36,516 INFO L495 AbstractCegarLoop]: Abstraction has 1035 states and 1674 transitions. [2023-11-29 02:25:36,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 7 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:25:36,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1674 transitions. [2023-11-29 02:25:36,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 02:25:36,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:36,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:36,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 02:25:36,519 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:36,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:36,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1889735847, now seen corresponding path program 1 times [2023-11-29 02:25:36,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:36,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669138323] [2023-11-29 02:25:36,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:36,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:36,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:36,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:25:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:36,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:25:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:36,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:25:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:36,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 02:25:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:36,818 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 02:25:36,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:36,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669138323] [2023-11-29 02:25:36,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669138323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:36,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:36,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:25:36,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361592396] [2023-11-29 02:25:36,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:36,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:25:36,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:36,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:25:36,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:25:36,820 INFO L87 Difference]: Start difference. First operand 1035 states and 1674 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:25:40,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:40,961 INFO L93 Difference]: Finished difference Result 3446 states and 5667 transitions. [2023-11-29 02:25:40,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:25:40,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-29 02:25:40,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:40,968 INFO L225 Difference]: With dead ends: 3446 [2023-11-29 02:25:40,968 INFO L226 Difference]: Without dead ends: 2430 [2023-11-29 02:25:40,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:25:40,971 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1520 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3699 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:40,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 1990 Invalid, 3763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3699 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 02:25:40,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2023-11-29 02:25:41,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 1694. [2023-11-29 02:25:41,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 1549 states have (on average 1.6152356358941253) internal successors, (2502), 1554 states have internal predecessors, (2502), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-11-29 02:25:41,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2735 transitions. [2023-11-29 02:25:41,098 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2735 transitions. Word has length 161 [2023-11-29 02:25:41,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:41,098 INFO L495 AbstractCegarLoop]: Abstraction has 1694 states and 2735 transitions. [2023-11-29 02:25:41,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:25:41,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2735 transitions. [2023-11-29 02:25:41,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 02:25:41,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:41,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:41,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 02:25:41,101 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:41,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:41,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1820087973, now seen corresponding path program 1 times [2023-11-29 02:25:41,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:41,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030030829] [2023-11-29 02:25:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:41,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:41,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:41,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:25:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:41,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:25:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:41,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:25:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:41,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 02:25:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:41,389 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 02:25:41,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:41,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030030829] [2023-11-29 02:25:41,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030030829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:41,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:41,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:25:41,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367728177] [2023-11-29 02:25:41,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:41,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:25:41,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:41,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:25:41,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:25:41,392 INFO L87 Difference]: Start difference. First operand 1694 states and 2735 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:25:45,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:45,540 INFO L93 Difference]: Finished difference Result 5887 states and 9644 transitions. [2023-11-29 02:25:45,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:25:45,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-29 02:25:45,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:45,554 INFO L225 Difference]: With dead ends: 5887 [2023-11-29 02:25:45,555 INFO L226 Difference]: Without dead ends: 4212 [2023-11-29 02:25:45,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:25:45,561 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1519 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3686 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:45,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 1990 Invalid, 3750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3686 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 02:25:45,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2023-11-29 02:25:45,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 3015. [2023-11-29 02:25:45,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2758 states have (on average 1.6113125453226975) internal successors, (4444), 2767 states have internal predecessors, (4444), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-11-29 02:25:45,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 4867 transitions. [2023-11-29 02:25:45,750 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 4867 transitions. Word has length 161 [2023-11-29 02:25:45,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:45,750 INFO L495 AbstractCegarLoop]: Abstraction has 3015 states and 4867 transitions. [2023-11-29 02:25:45,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:25:45,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 4867 transitions. [2023-11-29 02:25:45,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 02:25:45,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:45,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:45,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 02:25:45,754 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:45,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1402199271, now seen corresponding path program 1 times [2023-11-29 02:25:45,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:45,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031840175] [2023-11-29 02:25:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:45,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:45,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:45,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:25:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:46,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:25:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:46,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:25:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:46,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 02:25:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:46,045 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 02:25:46,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:46,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031840175] [2023-11-29 02:25:46,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031840175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:46,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:46,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:25:46,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040444719] [2023-11-29 02:25:46,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:46,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:25:46,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:46,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:25:46,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:25:46,047 INFO L87 Difference]: Start difference. First operand 3015 states and 4867 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:25:50,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:50,289 INFO L93 Difference]: Finished difference Result 10770 states and 17618 transitions. [2023-11-29 02:25:50,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:25:50,290 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-29 02:25:50,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:50,311 INFO L225 Difference]: With dead ends: 10770 [2023-11-29 02:25:50,311 INFO L226 Difference]: Without dead ends: 7774 [2023-11-29 02:25:50,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:25:50,319 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1518 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3673 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:50,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 1990 Invalid, 3737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3673 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 02:25:50,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7774 states. [2023-11-29 02:25:50,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7774 to 5664. [2023-11-29 02:25:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5664 states, 5183 states have (on average 1.608720818059039) internal successors, (8338), 5200 states have internal predecessors, (8338), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2023-11-29 02:25:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5664 states to 5664 states and 9159 transitions. [2023-11-29 02:25:50,628 INFO L78 Accepts]: Start accepts. Automaton has 5664 states and 9159 transitions. Word has length 161 [2023-11-29 02:25:50,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:50,628 INFO L495 AbstractCegarLoop]: Abstraction has 5664 states and 9159 transitions. [2023-11-29 02:25:50,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:25:50,628 INFO L276 IsEmpty]: Start isEmpty. Operand 5664 states and 9159 transitions. [2023-11-29 02:25:50,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 02:25:50,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:50,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:50,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 02:25:50,634 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:50,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:50,635 INFO L85 PathProgramCache]: Analyzing trace with hash -3245669, now seen corresponding path program 1 times [2023-11-29 02:25:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:50,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597866322] [2023-11-29 02:25:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:50,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:50,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:50,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:25:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:50,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:25:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:50,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:25:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:50,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 02:25:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:50,922 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 02:25:50,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:50,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597866322] [2023-11-29 02:25:50,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597866322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:50,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:50,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:25:50,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725503566] [2023-11-29 02:25:50,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:50,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:25:50,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:50,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:25:50,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:25:50,924 INFO L87 Difference]: Start difference. First operand 5664 states and 9159 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:25:55,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:25:55,541 INFO L93 Difference]: Finished difference Result 20537 states and 33628 transitions. [2023-11-29 02:25:55,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:25:55,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-29 02:25:55,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:25:55,593 INFO L225 Difference]: With dead ends: 20537 [2023-11-29 02:25:55,593 INFO L226 Difference]: Without dead ends: 14892 [2023-11-29 02:25:55,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:25:55,609 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1517 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3660 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:25:55,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1990 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3660 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 02:25:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14892 states. [2023-11-29 02:25:56,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14892 to 10977. [2023-11-29 02:25:56,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10977 states, 10048 states have (on average 1.6070859872611465) internal successors, (16148), 10081 states have internal predecessors, (16148), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2023-11-29 02:25:56,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10977 states to 10977 states and 17819 transitions. [2023-11-29 02:25:56,206 INFO L78 Accepts]: Start accepts. Automaton has 10977 states and 17819 transitions. Word has length 161 [2023-11-29 02:25:56,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:25:56,206 INFO L495 AbstractCegarLoop]: Abstraction has 10977 states and 17819 transitions. [2023-11-29 02:25:56,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:25:56,206 INFO L276 IsEmpty]: Start isEmpty. Operand 10977 states and 17819 transitions. [2023-11-29 02:25:56,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 02:25:56,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:25:56,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:56,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 02:25:56,216 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:25:56,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:25:56,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1620686119, now seen corresponding path program 1 times [2023-11-29 02:25:56,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:25:56,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099651715] [2023-11-29 02:25:56,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:25:56,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:25:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:56,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:25:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:56,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:25:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:56,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:25:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:56,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:25:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:56,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 02:25:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:25:56,512 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 02:25:56,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:25:56,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099651715] [2023-11-29 02:25:56,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099651715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:25:56,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:25:56,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:25:56,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739440771] [2023-11-29 02:25:56,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:25:56,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:25:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:25:56,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:25:56,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:25:56,514 INFO L87 Difference]: Start difference. First operand 10977 states and 17819 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:26:01,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:01,088 INFO L93 Difference]: Finished difference Result 40072 states and 65842 transitions. [2023-11-29 02:26:01,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:26:01,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-29 02:26:01,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:01,183 INFO L225 Difference]: With dead ends: 40072 [2023-11-29 02:26:01,183 INFO L226 Difference]: Without dead ends: 29114 [2023-11-29 02:26:01,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:26:01,213 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 1611 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 3014 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 3122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:01,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 1273 Invalid, 3122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 3014 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 02:26:01,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29114 states. [2023-11-29 02:26:02,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29114 to 21634. [2023-11-29 02:26:02,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21634 states, 19809 states have (on average 1.6060376596496542) internal successors, (31814), 19874 states have internal predecessors, (31814), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-11-29 02:26:02,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21634 states to 21634 states and 35347 transitions. [2023-11-29 02:26:02,641 INFO L78 Accepts]: Start accepts. Automaton has 21634 states and 35347 transitions. Word has length 161 [2023-11-29 02:26:02,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:02,641 INFO L495 AbstractCegarLoop]: Abstraction has 21634 states and 35347 transitions. [2023-11-29 02:26:02,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:26:02,642 INFO L276 IsEmpty]: Start isEmpty. Operand 21634 states and 35347 transitions. [2023-11-29 02:26:02,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 02:26:02,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:02,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:02,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 02:26:02,655 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:02,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:02,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1257219621, now seen corresponding path program 1 times [2023-11-29 02:26:02,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:02,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752394254] [2023-11-29 02:26:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:02,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:02,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:26:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:26:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:02,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:26:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:26:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:02,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 02:26:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:02,902 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 02:26:02,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:02,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752394254] [2023-11-29 02:26:02,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752394254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:26:02,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:26:02,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:26:02,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677619026] [2023-11-29 02:26:02,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:26:02,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:26:02,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:02,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:26:02,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:26:02,904 INFO L87 Difference]: Start difference. First operand 21634 states and 35347 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:26:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:08,993 INFO L93 Difference]: Finished difference Result 79143 states and 130872 transitions. [2023-11-29 02:26:08,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:26:08,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-29 02:26:08,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:09,173 INFO L225 Difference]: With dead ends: 79143 [2023-11-29 02:26:09,173 INFO L226 Difference]: Without dead ends: 57528 [2023-11-29 02:26:09,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:26:09,234 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1521 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3629 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:09,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1540 Valid, 1990 Invalid, 3693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3629 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 02:26:09,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57528 states. [2023-11-29 02:26:11,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57528 to 43011. [2023-11-29 02:26:11,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43011 states, 39394 states have (on average 1.6053206071990658) internal successors, (63240), 39523 states have internal predecessors, (63240), 2714 states have call successors, (2714), 774 states have call predecessors, (2714), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2023-11-29 02:26:11,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43011 states to 43011 states and 70983 transitions. [2023-11-29 02:26:11,754 INFO L78 Accepts]: Start accepts. Automaton has 43011 states and 70983 transitions. Word has length 161 [2023-11-29 02:26:11,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:11,754 INFO L495 AbstractCegarLoop]: Abstraction has 43011 states and 70983 transitions. [2023-11-29 02:26:11,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:26:11,754 INFO L276 IsEmpty]: Start isEmpty. Operand 43011 states and 70983 transitions. [2023-11-29 02:26:11,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 02:26:11,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:11,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:11,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 02:26:11,781 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:11,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:11,782 INFO L85 PathProgramCache]: Analyzing trace with hash -968400231, now seen corresponding path program 1 times [2023-11-29 02:26:11,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:11,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126814490] [2023-11-29 02:26:11,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:11,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:11,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:26:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:11,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:26:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:12,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:26:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:12,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:26:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:12,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 02:26:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:12,070 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 02:26:12,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:12,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126814490] [2023-11-29 02:26:12,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126814490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:26:12,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:26:12,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:26:12,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921006115] [2023-11-29 02:26:12,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:26:12,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:26:12,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:12,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:26:12,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:26:12,073 INFO L87 Difference]: Start difference. First operand 43011 states and 70983 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:26:20,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:20,379 INFO L93 Difference]: Finished difference Result 157156 states and 262522 transitions. [2023-11-29 02:26:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:26:20,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-29 02:26:20,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:20,876 INFO L225 Difference]: With dead ends: 157156 [2023-11-29 02:26:20,876 INFO L226 Difference]: Without dead ends: 114164 [2023-11-29 02:26:21,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:26:21,055 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1516 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3602 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:21,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 1990 Invalid, 3666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3602 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 02:26:21,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114164 states. [2023-11-29 02:26:25,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114164 to 86021. [2023-11-29 02:26:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86021 states, 78820 states have (on average 1.6054300938848007) internal successors, (126540), 79077 states have internal predecessors, (126540), 5402 states have call successors, (5402), 1542 states have call predecessors, (5402), 1798 states have return successors, (12219), 5657 states have call predecessors, (12219), 5402 states have call successors, (12219) [2023-11-29 02:26:25,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86021 states to 86021 states and 144161 transitions. [2023-11-29 02:26:25,935 INFO L78 Accepts]: Start accepts. Automaton has 86021 states and 144161 transitions. Word has length 161 [2023-11-29 02:26:25,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:25,935 INFO L495 AbstractCegarLoop]: Abstraction has 86021 states and 144161 transitions. [2023-11-29 02:26:25,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:26:25,936 INFO L276 IsEmpty]: Start isEmpty. Operand 86021 states and 144161 transitions. [2023-11-29 02:26:25,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 02:26:25,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:25,982 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:25,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 02:26:25,983 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:25,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:25,983 INFO L85 PathProgramCache]: Analyzing trace with hash -293240105, now seen corresponding path program 1 times [2023-11-29 02:26:25,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:25,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565256948] [2023-11-29 02:26:25,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:25,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:26,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:26:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:26,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:26:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:26,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:26:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:26,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:26:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 02:26:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:26,241 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 02:26:26,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:26,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565256948] [2023-11-29 02:26:26,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565256948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:26:26,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:26:26,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:26:26,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706489208] [2023-11-29 02:26:26,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:26:26,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:26:26,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:26,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:26:26,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:26:26,243 INFO L87 Difference]: Start difference. First operand 86021 states and 144161 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:26:39,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:26:39,358 INFO L93 Difference]: Finished difference Result 313444 states and 531986 transitions. [2023-11-29 02:26:39,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:26:39,359 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-29 02:26:39,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:26:40,323 INFO L225 Difference]: With dead ends: 313444 [2023-11-29 02:26:40,323 INFO L226 Difference]: Without dead ends: 227442 [2023-11-29 02:26:40,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:26:40,604 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1515 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3589 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:26:40,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1990 Invalid, 3653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3589 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 02:26:40,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227442 states. [2023-11-29 02:26:50,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227442 to 172294. [2023-11-29 02:26:50,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172294 states, 157925 states have (on average 1.605306316289378) internal successors, (253518), 158438 states have internal predecessors, (253518), 10778 states have call successors, (10778), 3078 states have call predecessors, (10778), 3590 states have return successors, (30973), 11289 states have call predecessors, (30973), 10778 states have call successors, (30973) [2023-11-29 02:26:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172294 states to 172294 states and 295269 transitions. [2023-11-29 02:26:51,440 INFO L78 Accepts]: Start accepts. Automaton has 172294 states and 295269 transitions. Word has length 161 [2023-11-29 02:26:51,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:26:51,441 INFO L495 AbstractCegarLoop]: Abstraction has 172294 states and 295269 transitions. [2023-11-29 02:26:51,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:26:51,441 INFO L276 IsEmpty]: Start isEmpty. Operand 172294 states and 295269 transitions. [2023-11-29 02:26:51,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 02:26:51,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:26:51,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:26:51,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 02:26:51,531 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:26:51,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:26:51,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1241292071, now seen corresponding path program 1 times [2023-11-29 02:26:51,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:26:51,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156275819] [2023-11-29 02:26:51,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:26:51,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:26:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:51,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:26:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:51,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:26:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:51,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:26:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:51,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:26:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:51,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 02:26:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:26:51,985 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 02:26:51,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:26:51,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156275819] [2023-11-29 02:26:51,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156275819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:26:51,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:26:51,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:26:51,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609595526] [2023-11-29 02:26:51,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:26:51,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:26:51,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:26:51,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:26:51,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:26:51,988 INFO L87 Difference]: Start difference. First operand 172294 states and 295269 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:27:12,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:27:12,801 INFO L93 Difference]: Finished difference Result 626019 states and 1088024 transitions. [2023-11-29 02:27:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:27:12,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-29 02:27:12,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:27:15,460 INFO L225 Difference]: With dead ends: 626019 [2023-11-29 02:27:15,460 INFO L226 Difference]: Without dead ends: 453744 [2023-11-29 02:27:16,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:27:16,289 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1514 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 3576 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 3640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:27:16,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 1990 Invalid, 3640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3576 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 02:27:16,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453744 states. [2023-11-29 02:27:36,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453744 to 345351. [2023-11-29 02:27:36,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345351 states, 316646 states have (on average 1.6050731731965666) internal successors, (508240), 317671 states have internal predecessors, (508240), 21530 states have call successors, (21530), 6150 states have call predecessors, (21530), 7174 states have return successors, (81603), 22553 states have call predecessors, (81603), 21530 states have call successors, (81603) [2023-11-29 02:27:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345351 states to 345351 states and 611373 transitions. [2023-11-29 02:27:39,419 INFO L78 Accepts]: Start accepts. Automaton has 345351 states and 611373 transitions. Word has length 161 [2023-11-29 02:27:39,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:27:39,419 INFO L495 AbstractCegarLoop]: Abstraction has 345351 states and 611373 transitions. [2023-11-29 02:27:39,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:27:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 345351 states and 611373 transitions. [2023-11-29 02:27:39,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 02:27:39,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:27:39,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:39,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 02:27:39,563 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:27:39,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:27:39,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1826063721, now seen corresponding path program 1 times [2023-11-29 02:27:39,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:27:39,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962544403] [2023-11-29 02:27:39,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:27:39,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:27:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:39,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-29 02:27:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:39,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:27:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:39,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 02:27:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:39,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 02:27:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:39,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 02:27:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:27:39,816 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 02:27:39,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:27:39,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962544403] [2023-11-29 02:27:39,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962544403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:27:39,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:27:39,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:27:39,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511569415] [2023-11-29 02:27:39,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:27:39,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:27:39,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:27:39,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:27:39,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:27:39,819 INFO L87 Difference]: Start difference. First operand 345351 states and 611373 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:28:21,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:28:21,357 INFO L93 Difference]: Finished difference Result 1419106 states and 2517040 transitions. [2023-11-29 02:28:21,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 02:28:21,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 5 states have internal predecessors, (151), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 161 [2023-11-29 02:28:21,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:28:27,792 INFO L225 Difference]: With dead ends: 1419106 [2023-11-29 02:28:27,793 INFO L226 Difference]: Without dead ends: 1073774 [2023-11-29 02:28:30,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:28:30,265 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 1623 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 4267 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 4333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 4267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:28:30,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1641 Valid, 1983 Invalid, 4333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 4267 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-29 02:28:30,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073774 states.