./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem18_label38.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b49a665-2d7d-49e6-be7f-71e7783bf535/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b49a665-2d7d-49e6-be7f-71e7783bf535/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b49a665-2d7d-49e6-be7f-71e7783bf535/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b49a665-2d7d-49e6-be7f-71e7783bf535/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem18_label38.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b49a665-2d7d-49e6-be7f-71e7783bf535/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b49a665-2d7d-49e6-be7f-71e7783bf535/bin/uautomizer-verify-zZY32mL2XJ --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 b3990b85e763534edf1f6c5cc073cba3fb338d90da8c9274c5799f3d3cad0b12 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:43:09,877 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:43:10,017 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b49a665-2d7d-49e6-be7f-71e7783bf535/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:43:10,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:43:10,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:43:10,065 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:43:10,066 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:43:10,066 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:43:10,068 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:43:10,073 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:43:10,073 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:43:10,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:43:10,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:43:10,076 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:43:10,077 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:43:10,078 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:43:10,078 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:43:10,078 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:43:10,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:43:10,079 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:43:10,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:43:10,082 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:43:10,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:43:10,083 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:43:10,083 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:43:10,083 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:43:10,084 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:43:10,085 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:43:10,085 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:43:10,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:43:10,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:43:10,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:43:10,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:43:10,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:43:10,088 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:43:10,088 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:43:10,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:43:10,089 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:43:10,089 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:43:10,089 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:43:10,090 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:43:10,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:43:10,090 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_7b49a665-2d7d-49e6-be7f-71e7783bf535/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b49a665-2d7d-49e6-be7f-71e7783bf535/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3990b85e763534edf1f6c5cc073cba3fb338d90da8c9274c5799f3d3cad0b12 [2023-11-23 22:43:10,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:43:10,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:43:10,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:43:10,479 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:43:10,479 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:43:10,481 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b49a665-2d7d-49e6-be7f-71e7783bf535/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/eca-rers2012/Problem18_label38.c [2023-11-23 22:43:13,753 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:43:14,296 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:43:14,298 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b49a665-2d7d-49e6-be7f-71e7783bf535/sv-benchmarks/c/eca-rers2012/Problem18_label38.c [2023-11-23 22:43:14,341 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b49a665-2d7d-49e6-be7f-71e7783bf535/bin/uautomizer-verify-zZY32mL2XJ/data/89c9264ae/4dd89b7c51e2449e82f60ef958e6fccc/FLAG0625dd9ec [2023-11-23 22:43:14,367 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b49a665-2d7d-49e6-be7f-71e7783bf535/bin/uautomizer-verify-zZY32mL2XJ/data/89c9264ae/4dd89b7c51e2449e82f60ef958e6fccc [2023-11-23 22:43:14,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:43:14,377 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:43:14,382 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:43:14,382 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:43:14,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:43:14,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:43:14" (1/1) ... [2023-11-23 22:43:14,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e1fe8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:14, skipping insertion in model container [2023-11-23 22:43:14,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:43:14" (1/1) ... [2023-11-23 22:43:14,547 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:43:14,835 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_7b49a665-2d7d-49e6-be7f-71e7783bf535/sv-benchmarks/c/eca-rers2012/Problem18_label38.c[2385,2398] [2023-11-23 22:43:15,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:43:15,994 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:43:16,019 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_7b49a665-2d7d-49e6-be7f-71e7783bf535/sv-benchmarks/c/eca-rers2012/Problem18_label38.c[2385,2398] [2023-11-23 22:43:16,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:43:16,447 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:43:16,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:16 WrapperNode [2023-11-23 22:43:16,448 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:43:16,449 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:43:16,450 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:43:16,450 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:43:16,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:16" (1/1) ... [2023-11-23 22:43:16,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:16" (1/1) ... [2023-11-23 22:43:16,731 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4133 [2023-11-23 22:43:16,732 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:43:16,733 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:43:16,733 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:43:16,733 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:43:16,745 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:16" (1/1) ... [2023-11-23 22:43:16,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:16" (1/1) ... [2023-11-23 22:43:16,768 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:16" (1/1) ... [2023-11-23 22:43:16,929 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 22:43:16,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:16" (1/1) ... [2023-11-23 22:43:16,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:16" (1/1) ... [2023-11-23 22:43:17,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:16" (1/1) ... [2023-11-23 22:43:17,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:16" (1/1) ... [2023-11-23 22:43:17,120 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:16" (1/1) ... [2023-11-23 22:43:17,134 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:16" (1/1) ... [2023-11-23 22:43:17,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:43:17,217 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:43:17,217 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:43:17,218 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:43:17,219 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:16" (1/1) ... [2023-11-23 22:43:17,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:43:17,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b49a665-2d7d-49e6-be7f-71e7783bf535/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:43:17,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b49a665-2d7d-49e6-be7f-71e7783bf535/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:43:17,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b49a665-2d7d-49e6-be7f-71e7783bf535/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:43:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:43:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:43:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:43:17,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:43:17,382 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:43:17,384 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:43:21,371 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:43:21,440 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:43:21,442 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 22:43:21,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:43:21 BoogieIcfgContainer [2023-11-23 22:43:21,443 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:43:21,446 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:43:21,446 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:43:21,450 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:43:21,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:43:14" (1/3) ... [2023-11-23 22:43:21,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39240c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:43:21, skipping insertion in model container [2023-11-23 22:43:21,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:43:16" (2/3) ... [2023-11-23 22:43:21,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39240c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:43:21, skipping insertion in model container [2023-11-23 22:43:21,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:43:21" (3/3) ... [2023-11-23 22:43:21,455 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label38.c [2023-11-23 22:43:21,475 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:43:21,476 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:43:21,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:43:21,553 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;@6e749aba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:43:21,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 22:43:21,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:21,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 22:43:21,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:43:21,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:21,569 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:43:21,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:21,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1854921508, now seen corresponding path program 1 times [2023-11-23 22:43:21,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:21,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086804505] [2023-11-23 22:43:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:21,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:21,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:21,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086804505] [2023-11-23 22:43:21,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086804505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:21,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:21,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:43:21,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321134400] [2023-11-23 22:43:21,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:21,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 22:43:21,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:21,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 22:43:21,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:43:21,780 INFO L87 Difference]: Start difference. First operand has 695 states, 693 states have (on average 1.9942279942279941) internal successors, (1382), 694 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:21,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:43:21,941 INFO L93 Difference]: Finished difference Result 1389 states and 2763 transitions. [2023-11-23 22:43:21,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 22:43:21,944 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-23 22:43:21,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:43:21,969 INFO L225 Difference]: With dead ends: 1389 [2023-11-23 22:43:21,970 INFO L226 Difference]: Without dead ends: 693 [2023-11-23 22:43:21,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 22:43:21,983 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:43:21,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1317 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:43:22,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-11-23 22:43:22,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2023-11-23 22:43:22,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.903179190751445) internal successors, (1317), 692 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1317 transitions. [2023-11-23 22:43:22,063 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1317 transitions. Word has length 19 [2023-11-23 22:43:22,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:43:22,064 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 1317 transitions. [2023-11-23 22:43:22,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:22,064 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1317 transitions. [2023-11-23 22:43:22,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 22:43:22,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:43:22,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:22,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:43:22,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:43:22,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:22,067 INFO L85 PathProgramCache]: Analyzing trace with hash 491553021, now seen corresponding path program 1 times [2023-11-23 22:43:22,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:22,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383594695] [2023-11-23 22:43:22,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:22,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:22,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:22,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:22,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383594695] [2023-11-23 22:43:22,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383594695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:22,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:22,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:43:22,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634548848] [2023-11-23 22:43:22,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:22,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:43:22,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:22,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:43:22,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:43:22,267 INFO L87 Difference]: Start difference. First operand 693 states and 1317 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:28,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:43:28,512 INFO L93 Difference]: Finished difference Result 2771 states and 5269 transitions. [2023-11-23 22:43:28,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:43:28,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-23 22:43:28,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:43:28,535 INFO L225 Difference]: With dead ends: 2771 [2023-11-23 22:43:28,535 INFO L226 Difference]: Without dead ends: 2079 [2023-11-23 22:43:28,536 INFO L412 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 [2023-11-23 22:43:28,538 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 2135 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3269 mSolverCounterSat, 1655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2135 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 4924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1655 IncrementalHoareTripleChecker+Valid, 3269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:43:28,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2135 Valid, 135 Invalid, 4924 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1655 Valid, 3269 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-23 22:43:28,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2023-11-23 22:43:28,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 2073. [2023-11-23 22:43:28,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 2072 states have (on average 1.5564671814671815) internal successors, (3225), 2072 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:28,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3225 transitions. [2023-11-23 22:43:28,606 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3225 transitions. Word has length 19 [2023-11-23 22:43:28,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:43:28,607 INFO L495 AbstractCegarLoop]: Abstraction has 2073 states and 3225 transitions. [2023-11-23 22:43:28,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:28,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3225 transitions. [2023-11-23 22:43:28,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-23 22:43:28,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:43:28,614 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-11-23 22:43:28,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:43:28,615 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:43:28,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:28,616 INFO L85 PathProgramCache]: Analyzing trace with hash -965848578, now seen corresponding path program 1 times [2023-11-23 22:43:28,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:28,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313714935] [2023-11-23 22:43:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:28,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 22:43:29,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:29,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313714935] [2023-11-23 22:43:29,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313714935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:29,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:29,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:43:29,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217365217] [2023-11-23 22:43:29,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:29,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:43:29,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:29,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:43:29,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:43:29,350 INFO L87 Difference]: Start difference. First operand 2073 states and 3225 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:34,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:43:34,833 INFO L93 Difference]: Finished difference Result 6215 states and 9563 transitions. [2023-11-23 22:43:34,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:43:34,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2023-11-23 22:43:34,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:43:34,860 INFO L225 Difference]: With dead ends: 6215 [2023-11-23 22:43:34,861 INFO L226 Difference]: Without dead ends: 4143 [2023-11-23 22:43:34,864 INFO L412 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 [2023-11-23 22:43:34,865 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 1922 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4115 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 4635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 4115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:43:34,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1922 Valid, 645 Invalid, 4635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 4115 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-23 22:43:34,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2023-11-23 22:43:34,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 4143. [2023-11-23 22:43:34,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 4142 states have (on average 1.2928536938676967) internal successors, (5355), 4142 states have internal predecessors, (5355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:34,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 5355 transitions. [2023-11-23 22:43:34,975 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 5355 transitions. Word has length 179 [2023-11-23 22:43:34,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:43:34,980 INFO L495 AbstractCegarLoop]: Abstraction has 4143 states and 5355 transitions. [2023-11-23 22:43:34,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 5355 transitions. [2023-11-23 22:43:34,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-11-23 22:43:35,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:43:35,001 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:35,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:43:35,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:43:35,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:35,004 INFO L85 PathProgramCache]: Analyzing trace with hash 81078091, now seen corresponding path program 1 times [2023-11-23 22:43:35,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:35,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339563254] [2023-11-23 22:43:35,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:35,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:43:35,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:35,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339563254] [2023-11-23 22:43:35,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339563254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:35,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:35,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:43:35,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207045303] [2023-11-23 22:43:35,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:35,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:43:35,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:35,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:43:35,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:43:35,716 INFO L87 Difference]: Start difference. First operand 4143 states and 5355 transitions. Second operand has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:39,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:43:39,475 INFO L93 Difference]: Finished difference Result 9028 states and 11974 transitions. [2023-11-23 22:43:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:43:39,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 268 [2023-11-23 22:43:39,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:43:39,508 INFO L225 Difference]: With dead ends: 9028 [2023-11-23 22:43:39,508 INFO L226 Difference]: Without dead ends: 5523 [2023-11-23 22:43:39,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:43:39,514 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 529 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 867 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 3458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 867 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-23 22:43:39,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 633 Invalid, 3458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [867 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-23 22:43:39,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2023-11-23 22:43:39,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 5523. [2023-11-23 22:43:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5523 states, 5522 states have (on average 1.161173487866715) internal successors, (6412), 5522 states have internal predecessors, (6412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:39,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5523 states to 5523 states and 6412 transitions. [2023-11-23 22:43:39,652 INFO L78 Accepts]: Start accepts. Automaton has 5523 states and 6412 transitions. Word has length 268 [2023-11-23 22:43:39,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:43:39,653 INFO L495 AbstractCegarLoop]: Abstraction has 5523 states and 6412 transitions. [2023-11-23 22:43:39,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.0) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:39,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5523 states and 6412 transitions. [2023-11-23 22:43:39,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2023-11-23 22:43:39,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:43:39,686 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:39,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:43:39,687 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:43:39,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:39,688 INFO L85 PathProgramCache]: Analyzing trace with hash 65163290, now seen corresponding path program 1 times [2023-11-23 22:43:39,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:39,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404232695] [2023-11-23 22:43:39,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:39,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2023-11-23 22:43:41,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:41,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404232695] [2023-11-23 22:43:41,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404232695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:41,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:41,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:43:41,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985130242] [2023-11-23 22:43:41,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:41,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:43:41,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:41,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:43:41,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:43:41,478 INFO L87 Difference]: Start difference. First operand 5523 states and 6412 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 2 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:44,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:43:44,202 INFO L93 Difference]: Finished difference Result 11735 states and 13893 transitions. [2023-11-23 22:43:44,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:43:44,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 2 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 900 [2023-11-23 22:43:44,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:43:44,242 INFO L225 Difference]: With dead ends: 11735 [2023-11-23 22:43:44,243 INFO L226 Difference]: Without dead ends: 6903 [2023-11-23 22:43:44,250 INFO L412 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 [2023-11-23 22:43:44,251 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 192 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 2195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 22:43:44,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 342 Invalid, 2195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 22:43:44,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6903 states. [2023-11-23 22:43:44,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6903 to 6903. [2023-11-23 22:43:44,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6903 states, 6902 states have (on average 1.1469139379889888) internal successors, (7916), 6902 states have internal predecessors, (7916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:44,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6903 states to 6903 states and 7916 transitions. [2023-11-23 22:43:44,473 INFO L78 Accepts]: Start accepts. Automaton has 6903 states and 7916 transitions. Word has length 900 [2023-11-23 22:43:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:43:44,477 INFO L495 AbstractCegarLoop]: Abstraction has 6903 states and 7916 transitions. [2023-11-23 22:43:44,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 2 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:44,478 INFO L276 IsEmpty]: Start isEmpty. Operand 6903 states and 7916 transitions. [2023-11-23 22:43:44,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2023-11-23 22:43:44,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:43:44,531 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:44,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:43:44,531 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:43:44,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:44,532 INFO L85 PathProgramCache]: Analyzing trace with hash -701825039, now seen corresponding path program 1 times [2023-11-23 22:43:44,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:44,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600344393] [2023-11-23 22:43:44,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:44,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:45,710 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2023-11-23 22:43:45,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:45,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600344393] [2023-11-23 22:43:45,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600344393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:45,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:45,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:43:45,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981134562] [2023-11-23 22:43:45,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:45,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:43:45,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:45,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:43:45,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:43:45,716 INFO L87 Difference]: Start difference. First operand 6903 states and 7916 transitions. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 2 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:48,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:43:48,455 INFO L93 Difference]: Finished difference Result 15185 states and 18152 transitions. [2023-11-23 22:43:48,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:43:48,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 2 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 966 [2023-11-23 22:43:48,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:43:48,501 INFO L225 Difference]: With dead ends: 15185 [2023-11-23 22:43:48,501 INFO L226 Difference]: Without dead ends: 8973 [2023-11-23 22:43:48,508 INFO L412 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 [2023-11-23 22:43:48,509 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 226 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 22:43:48,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 387 Invalid, 2270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 22:43:48,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8973 states. [2023-11-23 22:43:48,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8973 to 8973. [2023-11-23 22:43:48,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8973 states, 8972 states have (on average 1.133860900579581) internal successors, (10173), 8972 states have internal predecessors, (10173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:48,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8973 states to 8973 states and 10173 transitions. [2023-11-23 22:43:48,694 INFO L78 Accepts]: Start accepts. Automaton has 8973 states and 10173 transitions. Word has length 966 [2023-11-23 22:43:48,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:43:48,696 INFO L495 AbstractCegarLoop]: Abstraction has 8973 states and 10173 transitions. [2023-11-23 22:43:48,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 2 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:48,696 INFO L276 IsEmpty]: Start isEmpty. Operand 8973 states and 10173 transitions. [2023-11-23 22:43:48,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2023-11-23 22:43:48,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:43:48,708 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:48,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:43:48,709 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:43:48,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:48,710 INFO L85 PathProgramCache]: Analyzing trace with hash 998117283, now seen corresponding path program 1 times [2023-11-23 22:43:48,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:48,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104728557] [2023-11-23 22:43:48,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:48,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2023-11-23 22:43:49,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:49,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104728557] [2023-11-23 22:43:49,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104728557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:49,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:49,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:43:49,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009043402] [2023-11-23 22:43:49,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:49,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:43:49,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:49,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:43:49,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:43:49,918 INFO L87 Difference]: Start difference. First operand 8973 states and 10173 transitions. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:52,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:43:52,982 INFO L93 Difference]: Finished difference Result 24155 states and 27677 transitions. [2023-11-23 22:43:52,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:43:52,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 986 [2023-11-23 22:43:52,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:43:53,017 INFO L225 Difference]: With dead ends: 24155 [2023-11-23 22:43:53,017 INFO L226 Difference]: Without dead ends: 15873 [2023-11-23 22:43:53,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:43:53,029 INFO L413 NwaCegarLoop]: 1118 mSDtfsCounter, 755 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-23 22:43:53,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1124 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-23 22:43:53,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15873 states. [2023-11-23 22:43:53,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15873 to 13803. [2023-11-23 22:43:53,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13803 states, 13802 states have (on average 1.1233154615273149) internal successors, (15504), 13802 states have internal predecessors, (15504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13803 states to 13803 states and 15504 transitions. [2023-11-23 22:43:53,330 INFO L78 Accepts]: Start accepts. Automaton has 13803 states and 15504 transitions. Word has length 986 [2023-11-23 22:43:53,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:43:53,332 INFO L495 AbstractCegarLoop]: Abstraction has 13803 states and 15504 transitions. [2023-11-23 22:43:53,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:43:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 13803 states and 15504 transitions. [2023-11-23 22:43:53,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2023-11-23 22:43:53,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:43:53,349 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:43:53,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:43:53,349 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:43:53,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:43:53,350 INFO L85 PathProgramCache]: Analyzing trace with hash -583873290, now seen corresponding path program 1 times [2023-11-23 22:43:53,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:43:53,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674100372] [2023-11-23 22:43:53,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:43:53,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:43:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:43:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2023-11-23 22:43:56,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:43:56,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674100372] [2023-11-23 22:43:56,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674100372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:43:56,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:43:56,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:43:56,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207584700] [2023-11-23 22:43:56,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:43:56,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:43:56,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:43:56,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:43:56,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:43:56,271 INFO L87 Difference]: Start difference. First operand 13803 states and 15504 transitions. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)