./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2018/Problem12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2018/Problem12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/bin/uautomizer-verify-qhAvR1uOyd --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 bc374151ad7cbf5164d124b31f1469c11fb09f7ea899f596b5df5ff69b5f22f3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:56:06,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:56:06,753 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:56:06,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:56:06,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:56:06,793 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:56:06,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:56:06,795 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:56:06,795 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:56:06,796 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:56:06,796 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:56:06,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:56:06,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:56:06,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:56:06,797 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:56:06,797 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:56:06,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:56:06,799 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:56:06,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:56:06,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:56:06,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:56:06,799 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:56:06,799 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:56:06,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:56:06,799 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:56:06,800 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:56:06,800 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:56:06,800 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:56:06,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:56:06,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:56:06,800 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:56:06,800 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:56:06,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:56:06,801 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:56:06,801 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:56:06,801 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:56:06,802 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:56:06,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:56:06,802 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:56:06,802 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:56:06,802 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:56:06,802 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:56:06,802 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/bin/uautomizer-verify-qhAvR1uOyd 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 -> bc374151ad7cbf5164d124b31f1469c11fb09f7ea899f596b5df5ff69b5f22f3 [2024-11-13 15:56:07,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:56:07,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:56:07,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:56:07,118 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:56:07,118 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:56:07,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2018/Problem12.c Unable to find full path for "g++" [2024-11-13 15:56:09,011 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:56:10,022 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:56:10,026 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/sv-benchmarks/c/eca-rers2018/Problem12.c [2024-11-13 15:56:10,125 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/bin/uautomizer-verify-qhAvR1uOyd/data/7769ad811/a7d046d6d24f4abf8d3bf40b7c7ea781/FLAG965bc7560 [2024-11-13 15:56:10,148 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/bin/uautomizer-verify-qhAvR1uOyd/data/7769ad811/a7d046d6d24f4abf8d3bf40b7c7ea781 [2024-11-13 15:56:10,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:56:10,154 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:56:10,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:56:10,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:56:10,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:56:10,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:56:10" (1/1) ... [2024-11-13 15:56:10,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bf5478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:10, skipping insertion in model container [2024-11-13 15:56:10,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:56:10" (1/1) ... [2024-11-13 15:56:10,403 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:56:10,640 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/sv-benchmarks/c/eca-rers2018/Problem12.c[778,791] [2024-11-13 15:56:10,655 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/sv-benchmarks/c/eca-rers2018/Problem12.c[817,830] [2024-11-13 15:56:13,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:56:14,025 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:56:14,035 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/sv-benchmarks/c/eca-rers2018/Problem12.c[778,791] [2024-11-13 15:56:14,036 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/sv-benchmarks/c/eca-rers2018/Problem12.c[817,830] [2024-11-13 15:56:15,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:56:15,267 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:56:15,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:15 WrapperNode [2024-11-13 15:56:15,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:56:15,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:56:15,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:56:15,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:56:15,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:15" (1/1) ... [2024-11-13 15:56:15,617 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:15" (1/1) ... [2024-11-13 15:56:17,508 INFO L138 Inliner]: procedures = 351, calls = 5526, calls flagged for inlining = 234, calls inlined = 234, statements flattened = 43808 [2024-11-13 15:56:17,509 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:56:17,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:56:17,510 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:56:17,510 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:56:17,517 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:15" (1/1) ... [2024-11-13 15:56:17,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:15" (1/1) ... [2024-11-13 15:56:17,994 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:15" (1/1) ... [2024-11-13 15:56:18,627 INFO L175 MemorySlicer]: Split 5144 memory accesses to 26 slices as follows [226, 30, 244, 32, 96, 264, 58, 2, 601, 38, 558, 93, 58, 68, 56, 257, 92, 540, 28, 82, 520, 353, 149, 75, 83, 541]. 12 percent of accesses are in the largest equivalence class. The 304 initializations are split as follows [18, 18, 18, 18, 8, 18, 8, 2, 0, 18, 8, 8, 8, 18, 8, 18, 8, 8, 18, 18, 8, 8, 8, 8, 18, 8]. The 16 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-13 15:56:18,628 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:15" (1/1) ... [2024-11-13 15:56:18,628 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:15" (1/1) ... [2024-11-13 15:56:19,445 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:15" (1/1) ... [2024-11-13 15:56:19,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:15" (1/1) ... [2024-11-13 15:56:19,730 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:15" (1/1) ... [2024-11-13 15:56:19,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:15" (1/1) ... [2024-11-13 15:56:20,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:56:20,100 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:56:20,101 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:56:20,101 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:56:20,102 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:15" (1/1) ... [2024-11-13 15:56:20,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:56:20,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:20,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:56:20,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77fe76f-2054-4212-87c0-9ba63006abc2/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:56:20,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-13 15:56:20,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-13 15:56:20,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-13 15:56:20,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-13 15:56:20,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-13 15:56:20,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-13 15:56:20,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-13 15:56:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-13 15:56:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-13 15:56:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-11-13 15:56:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-11-13 15:56:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2024-11-13 15:56:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2024-11-13 15:56:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#13 [2024-11-13 15:56:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#14 [2024-11-13 15:56:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#15 [2024-11-13 15:56:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#16 [2024-11-13 15:56:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#17 [2024-11-13 15:56:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#18 [2024-11-13 15:56:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#19 [2024-11-13 15:56:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#20 [2024-11-13 15:56:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#21 [2024-11-13 15:56:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#22 [2024-11-13 15:56:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#23 [2024-11-13 15:56:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#24 [2024-11-13 15:56:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#25 [2024-11-13 15:56:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:56:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:56:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 15:56:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 15:56:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-13 15:56:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-13 15:56:20,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-13 15:56:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-13 15:56:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-13 15:56:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-13 15:56:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-13 15:56:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-13 15:56:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-13 15:56:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-13 15:56:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-13 15:56:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2024-11-13 15:56:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2024-11-13 15:56:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2024-11-13 15:56:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#18 [2024-11-13 15:56:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#19 [2024-11-13 15:56:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#20 [2024-11-13 15:56:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#21 [2024-11-13 15:56:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#22 [2024-11-13 15:56:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#23 [2024-11-13 15:56:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#24 [2024-11-13 15:56:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#25 [2024-11-13 15:56:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:56:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_a [2024-11-13 15:56:20,183 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_a [2024-11-13 15:56:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_b [2024-11-13 15:56:20,183 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_b [2024-11-13 15:56:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:56:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-13 15:56:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-13 15:56:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-13 15:56:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#20 [2024-11-13 15:56:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#21 [2024-11-13 15:56:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#22 [2024-11-13 15:56:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#23 [2024-11-13 15:56:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#24 [2024-11-13 15:56:20,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#25 [2024-11-13 15:56:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:56:20,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:56:22,064 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:56:22,066 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:58:31,608 INFO L? ?]: Removed 8776 outVars from TransFormulas that were not future-live. [2024-11-13 15:58:31,608 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:58:31,710 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:58:31,710 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 15:58:31,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:58:31 BoogieIcfgContainer [2024-11-13 15:58:31,711 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:58:31,713 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:58:31,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:58:31,718 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:58:31,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:56:10" (1/3) ... [2024-11-13 15:58:31,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7021cf5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:58:31, skipping insertion in model container [2024-11-13 15:58:31,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:56:15" (2/3) ... [2024-11-13 15:58:31,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7021cf5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:58:31, skipping insertion in model container [2024-11-13 15:58:31,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:58:31" (3/3) ... [2024-11-13 15:58:31,721 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12.c [2024-11-13 15:58:31,736 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:58:31,743 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem12.c that has 3 procedures, 9313 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2024-11-13 15:58:31,994 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:58:32,010 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@c037515, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:58:32,010 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 15:58:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 9313 states, 9208 states have (on average 1.5513683753258036) internal successors, (14285), 9210 states have internal predecessors, (14285), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-13 15:58:32,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 15:58:32,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:32,064 INFO L215 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] [2024-11-13 15:58:32,064 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:32,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:32,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1999714608, now seen corresponding path program 1 times [2024-11-13 15:58:32,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:32,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545302258] [2024-11-13 15:58:32,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:32,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:32,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:32,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545302258] [2024-11-13 15:58:32,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545302258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:32,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:32,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:58:32,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818948479] [2024-11-13 15:58:32,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:32,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:58:32,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:32,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:58:32,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:58:32,958 INFO L87 Difference]: Start difference. First operand has 9313 states, 9208 states have (on average 1.5513683753258036) internal successors, (14285), 9210 states have internal predecessors, (14285), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:33,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:33,598 INFO L93 Difference]: Finished difference Result 18523 states and 28871 transitions. [2024-11-13 15:58:33,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:58:33,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-13 15:58:33,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:33,662 INFO L225 Difference]: With dead ends: 18523 [2024-11-13 15:58:33,662 INFO L226 Difference]: Without dead ends: 9209 [2024-11-13 15:58:33,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:58:33,689 INFO L432 NwaCegarLoop]: 14275 mSDtfsCounter, 1 mSDsluCounter, 28539 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 42814 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:33,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 42814 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:58:33,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9209 states. [2024-11-13 15:58:33,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9209 to 9209. [2024-11-13 15:58:33,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9209 states, 9107 states have (on average 1.5568244207752278) internal successors, (14178), 9206 states have internal predecessors, (14178), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:34,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9209 states to 9209 states and 14278 transitions. [2024-11-13 15:58:34,056 INFO L78 Accepts]: Start accepts. Automaton has 9209 states and 14278 transitions. Word has length 39 [2024-11-13 15:58:34,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:34,058 INFO L471 AbstractCegarLoop]: Abstraction has 9209 states and 14278 transitions. [2024-11-13 15:58:34,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:34,058 INFO L276 IsEmpty]: Start isEmpty. Operand 9209 states and 14278 transitions. [2024-11-13 15:58:34,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 15:58:34,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:34,065 INFO L215 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] [2024-11-13 15:58:34,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:58:34,068 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:34,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:34,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1274184334, now seen corresponding path program 1 times [2024-11-13 15:58:34,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:34,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519113508] [2024-11-13 15:58:34,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:34,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:34,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:34,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519113508] [2024-11-13 15:58:34,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519113508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:34,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:34,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:58:34,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199757331] [2024-11-13 15:58:34,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:34,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:58:34,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:34,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:58:34,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:58:34,471 INFO L87 Difference]: Start difference. First operand 9209 states and 14278 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:38,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:58:41,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:58:46,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:58:48,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:58:48,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:48,897 INFO L93 Difference]: Finished difference Result 27618 states and 42825 transitions. [2024-11-13 15:58:48,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:58:48,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-13 15:58:48,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:48,970 INFO L225 Difference]: With dead ends: 27618 [2024-11-13 15:58:48,970 INFO L226 Difference]: Without dead ends: 18411 [2024-11-13 15:58:48,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:58:48,986 INFO L432 NwaCegarLoop]: 15022 mSDtfsCounter, 14201 mSDsluCounter, 14189 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14201 SdHoareTripleChecker+Valid, 29211 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:48,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14201 Valid, 29211 Invalid, 138 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 131 Invalid, 2 Unknown, 0 Unchecked, 14.1s Time] [2024-11-13 15:58:49,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18411 states. [2024-11-13 15:58:49,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18411 to 18311. [2024-11-13 15:58:49,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18311 states, 18209 states have (on average 1.556647811521775) internal successors, (28345), 18308 states have internal predecessors, (28345), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:49,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18311 states to 18311 states and 28445 transitions. [2024-11-13 15:58:49,375 INFO L78 Accepts]: Start accepts. Automaton has 18311 states and 28445 transitions. Word has length 39 [2024-11-13 15:58:49,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:49,375 INFO L471 AbstractCegarLoop]: Abstraction has 18311 states and 28445 transitions. [2024-11-13 15:58:49,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 18311 states and 28445 transitions. [2024-11-13 15:58:49,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 15:58:49,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:49,380 INFO L215 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] [2024-11-13 15:58:49,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:58:49,380 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:49,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:49,380 INFO L85 PathProgramCache]: Analyzing trace with hash 845080954, now seen corresponding path program 1 times [2024-11-13 15:58:49,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:49,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577331347] [2024-11-13 15:58:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:49,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:49,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:49,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577331347] [2024-11-13 15:58:49,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577331347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:49,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:49,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:58:49,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557060812] [2024-11-13 15:58:49,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:49,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:58:49,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:49,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:58:49,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:58:49,688 INFO L87 Difference]: Start difference. First operand 18311 states and 28445 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:51,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:58:54,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:00,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:03,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:10,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:10,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:10,793 INFO L93 Difference]: Finished difference Result 54495 states and 84661 transitions. [2024-11-13 15:59:10,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:59:10,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-13 15:59:10,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:10,881 INFO L225 Difference]: With dead ends: 54495 [2024-11-13 15:59:10,881 INFO L226 Difference]: Without dead ends: 36186 [2024-11-13 15:59:10,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:10,908 INFO L432 NwaCegarLoop]: 16470 mSDtfsCounter, 13843 mSDsluCounter, 14154 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13843 SdHoareTripleChecker+Valid, 30624 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:10,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13843 Valid, 30624 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 153 Invalid, 1 Unknown, 0 Unchecked, 20.8s Time] [2024-11-13 15:59:10,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36186 states. [2024-11-13 15:59:11,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36186 to 36086. [2024-11-13 15:59:11,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36086 states, 35984 states have (on average 1.55635838150289) internal successors, (56004), 36083 states have internal predecessors, (56004), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:11,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36086 states to 36086 states and 56104 transitions. [2024-11-13 15:59:11,937 INFO L78 Accepts]: Start accepts. Automaton has 36086 states and 56104 transitions. Word has length 40 [2024-11-13 15:59:11,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:11,938 INFO L471 AbstractCegarLoop]: Abstraction has 36086 states and 56104 transitions. [2024-11-13 15:59:11,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:11,938 INFO L276 IsEmpty]: Start isEmpty. Operand 36086 states and 56104 transitions. [2024-11-13 15:59:11,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 15:59:11,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:11,943 INFO L215 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] [2024-11-13 15:59:11,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:59:11,943 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:11,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:11,944 INFO L85 PathProgramCache]: Analyzing trace with hash 427784758, now seen corresponding path program 1 times [2024-11-13 15:59:11,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:11,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065853495] [2024-11-13 15:59:11,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:11,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:12,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:12,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:12,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065853495] [2024-11-13 15:59:12,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065853495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:12,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:12,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:59:12,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939487404] [2024-11-13 15:59:12,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:12,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:59:12,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:12,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:59:12,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:12,252 INFO L87 Difference]: Start difference. First operand 36086 states and 56104 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:14,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:14,874 INFO L93 Difference]: Finished difference Result 108104 states and 168078 transitions. [2024-11-13 15:59:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:59:14,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-13 15:59:14,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:15,062 INFO L225 Difference]: With dead ends: 108104 [2024-11-13 15:59:15,062 INFO L226 Difference]: Without dead ends: 72020 [2024-11-13 15:59:15,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:15,106 INFO L432 NwaCegarLoop]: 14361 mSDtfsCounter, 14219 mSDsluCounter, 14186 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14219 SdHoareTripleChecker+Valid, 28547 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:15,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14219 Valid, 28547 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 15:59:15,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72020 states. [2024-11-13 15:59:16,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72020 to 71918. [2024-11-13 15:59:16,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71918 states, 71816 states have (on average 1.5562548735657793) internal successors, (111764), 71915 states have internal predecessors, (111764), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:16,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71918 states to 71918 states and 111864 transitions. [2024-11-13 15:59:16,422 INFO L78 Accepts]: Start accepts. Automaton has 71918 states and 111864 transitions. Word has length 41 [2024-11-13 15:59:16,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:16,424 INFO L471 AbstractCegarLoop]: Abstraction has 71918 states and 111864 transitions. [2024-11-13 15:59:16,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:16,425 INFO L276 IsEmpty]: Start isEmpty. Operand 71918 states and 111864 transitions. [2024-11-13 15:59:16,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 15:59:16,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:16,430 INFO L215 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] [2024-11-13 15:59:16,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:59:16,431 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:16,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:16,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1213173508, now seen corresponding path program 1 times [2024-11-13 15:59:16,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:16,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106127983] [2024-11-13 15:59:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:16,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:16,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:16,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:16,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106127983] [2024-11-13 15:59:16,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106127983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:16,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:16,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:59:16,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552474598] [2024-11-13 15:59:16,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:16,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:59:16,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:16,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:59:16,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:16,714 INFO L87 Difference]: Start difference. First operand 71918 states and 111864 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:18,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:22,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:23,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:27,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:31,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:35,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:39,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:43,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:44,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:48,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:51,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:52,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:55,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 15:59:59,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:00:02,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:00:04,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:00:07,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:00:10,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:00:13,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:00:16,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:00:18,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:00:22,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:00:27,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:00:35,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:00:42,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:00:47,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:00:50,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:00:55,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:00:59,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:01:03,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 16:01:07,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:01:08,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:01:08,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:01:08,997 INFO L93 Difference]: Finished difference Result 205550 states and 319808 transitions. [2024-11-13 16:01:08,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:01:08,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-13 16:01:08,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:01:09,518 INFO L225 Difference]: With dead ends: 205550 [2024-11-13 16:01:09,518 INFO L226 Difference]: Without dead ends: 133634 [2024-11-13 16:01:09,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:01:09,555 INFO L432 NwaCegarLoop]: 22377 mSDtfsCounter, 11557 mSDsluCounter, 12810 mSDsCounter, 0 mSdLazyCounter, 2586 mSolverCounterSat, 120 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11557 SdHoareTripleChecker+Valid, 35187 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2586 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:01:09,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11557 Valid, 35187 Invalid, 2715 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 2586 Invalid, 9 Unknown, 0 Unchecked, 111.3s Time] [2024-11-13 16:01:09,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133634 states. [2024-11-13 16:01:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133634 to 131850. [2024-11-13 16:01:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131850 states, 131748 states have (on average 1.5469229134408113) internal successors, (203804), 131847 states have internal predecessors, (203804), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:01:11,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131850 states to 131850 states and 203904 transitions. [2024-11-13 16:01:11,783 INFO L78 Accepts]: Start accepts. Automaton has 131850 states and 203904 transitions. Word has length 43 [2024-11-13 16:01:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:01:11,783 INFO L471 AbstractCegarLoop]: Abstraction has 131850 states and 203904 transitions. [2024-11-13 16:01:11,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:01:11,784 INFO L276 IsEmpty]: Start isEmpty. Operand 131850 states and 203904 transitions. [2024-11-13 16:01:11,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 16:01:11,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:01:11,801 INFO L215 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] [2024-11-13 16:01:11,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:01:11,802 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:01:11,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:01:11,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1971330498, now seen corresponding path program 1 times [2024-11-13 16:01:11,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:01:11,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675364302] [2024-11-13 16:01:11,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:01:11,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:01:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:01:12,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:12,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:01:12,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675364302] [2024-11-13 16:01:12,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675364302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:01:12,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:01:12,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:01:12,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509335944] [2024-11-13 16:01:12,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:01:12,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:01:12,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:01:12,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:01:12,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:01:12,326 INFO L87 Difference]: Start difference. First operand 131850 states and 203904 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:01:15,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:01:20,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:01:20,332 INFO L93 Difference]: Finished difference Result 395561 states and 611731 transitions. [2024-11-13 16:01:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:01:20,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-13 16:01:20,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:01:20,610 INFO L225 Difference]: With dead ends: 395561 [2024-11-13 16:01:20,610 INFO L226 Difference]: Without dead ends: 263713 [2024-11-13 16:01:20,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:01:20,682 INFO L432 NwaCegarLoop]: 16074 mSDtfsCounter, 14174 mSDsluCounter, 30188 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14174 SdHoareTripleChecker+Valid, 46262 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:01:20,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14174 Valid, 46262 Invalid, 489 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-13 16:01:20,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263713 states. [2024-11-13 16:01:23,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263713 to 263578. [2024-11-13 16:01:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263578 states, 263476 states have (on average 1.5467822496166634) internal successors, (407540), 263575 states have internal predecessors, (407540), 100 states have call successors, (100), 2 states have call predecessors, (100), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:01:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263578 states to 263578 states and 407640 transitions. [2024-11-13 16:01:24,603 INFO L78 Accepts]: Start accepts. Automaton has 263578 states and 407640 transitions. Word has length 60 [2024-11-13 16:01:24,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:01:24,603 INFO L471 AbstractCegarLoop]: Abstraction has 263578 states and 407640 transitions. [2024-11-13 16:01:24,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:01:24,604 INFO L276 IsEmpty]: Start isEmpty. Operand 263578 states and 407640 transitions. [2024-11-13 16:01:24,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 16:01:24,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:01:24,620 INFO L215 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] [2024-11-13 16:01:24,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 16:01:24,620 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:01:24,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:01:24,621 INFO L85 PathProgramCache]: Analyzing trace with hash 735288896, now seen corresponding path program 1 times [2024-11-13 16:01:24,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:01:24,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867090973] [2024-11-13 16:01:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:01:24,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:01:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:01:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:25,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:01:25,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867090973] [2024-11-13 16:01:25,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867090973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:01:25,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:01:25,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:01:25,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489733725] [2024-11-13 16:01:25,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:01:25,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:01:25,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:01:25,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:01:25,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:01:25,048 INFO L87 Difference]: Start difference. First operand 263578 states and 407640 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:01:26,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-13 16:01:30,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:01:30,124 INFO L93 Difference]: Finished difference Result 790761 states and 1222963 transitions. [2024-11-13 16:01:30,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:01:30,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-13 16:01:30,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:01:30,954 INFO L225 Difference]: With dead ends: 790761 [2024-11-13 16:01:30,954 INFO L226 Difference]: Without dead ends: 527185 [2024-11-13 16:01:31,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:01:31,749 INFO L432 NwaCegarLoop]: 15429 mSDtfsCounter, 14205 mSDsluCounter, 29630 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14205 SdHoareTripleChecker+Valid, 45059 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 16:01:31,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14205 Valid, 45059 Invalid, 217 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 16:01:32,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527185 states.