./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c861265e1e1e27fe23877e47c41012b82996e1c7e91f362716a115cbf38b786b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:24:15,090 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:24:15,152 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 20:24:15,157 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:24:15,158 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:24:15,179 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:24:15,179 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:24:15,180 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:24:15,181 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:24:15,181 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:24:15,182 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:24:15,182 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:24:15,183 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:24:15,183 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:24:15,184 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:24:15,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:24:15,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:24:15,185 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:24:15,186 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:24:15,186 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:24:15,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:24:15,189 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:24:15,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:24:15,189 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:24:15,190 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:24:15,190 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:24:15,190 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:24:15,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:24:15,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:24:15,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:24:15,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:24:15,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:24:15,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:24:15,193 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:24:15,193 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:24:15,193 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:24:15,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:24:15,194 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:24:15,194 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:24:15,194 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:24:15,194 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:24:15,194 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:24:15,195 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_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c861265e1e1e27fe23877e47c41012b82996e1c7e91f362716a115cbf38b786b [2023-11-28 20:24:15,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:24:15,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:24:15,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:24:15,420 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:24:15,420 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:24:15,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/locks/test_locks_10.c [2023-11-28 20:24:18,192 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:24:18,385 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:24:18,386 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/sv-benchmarks/c/locks/test_locks_10.c [2023-11-28 20:24:18,395 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya/data/bab3d3265/3831ff5245204e28a9970eee06b880f3/FLAG23ebf178d [2023-11-28 20:24:18,409 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya/data/bab3d3265/3831ff5245204e28a9970eee06b880f3 [2023-11-28 20:24:18,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:24:18,413 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:24:18,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:24:18,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:24:18,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:24:18,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:18" (1/1) ... [2023-11-28 20:24:18,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d809c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:18, skipping insertion in model container [2023-11-28 20:24:18,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:24:18" (1/1) ... [2023-11-28 20:24:18,442 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:24:18,573 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_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/sv-benchmarks/c/locks/test_locks_10.c[3901,3914] [2023-11-28 20:24:18,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:24:18,588 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:24:18,609 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_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/sv-benchmarks/c/locks/test_locks_10.c[3901,3914] [2023-11-28 20:24:18,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:24:18,624 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:24:18,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:18 WrapperNode [2023-11-28 20:24:18,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:24:18,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:24:18,625 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:24:18,625 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:24:18,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:18" (1/1) ... [2023-11-28 20:24:18,637 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:18" (1/1) ... [2023-11-28 20:24:18,659 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 148 [2023-11-28 20:24:18,660 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:24:18,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:24:18,660 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:24:18,661 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:24:18,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:18" (1/1) ... [2023-11-28 20:24:18,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:18" (1/1) ... [2023-11-28 20:24:18,672 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:18" (1/1) ... [2023-11-28 20:24:18,683 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-28 20:24:18,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:18" (1/1) ... [2023-11-28 20:24:18,683 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:18" (1/1) ... [2023-11-28 20:24:18,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:18" (1/1) ... [2023-11-28 20:24:18,691 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:18" (1/1) ... [2023-11-28 20:24:18,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:18" (1/1) ... [2023-11-28 20:24:18,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:18" (1/1) ... [2023-11-28 20:24:18,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:24:18,697 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:24:18,697 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:24:18,697 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:24:18,698 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:18" (1/1) ... [2023-11-28 20:24:18,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:24:18,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:24:18,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:24:18,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:24:18,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:24:18,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:24:18,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:24:18,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:24:18,829 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:24:18,830 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:24:19,017 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:24:19,044 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:24:19,045 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-28 20:24:19,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:19 BoogieIcfgContainer [2023-11-28 20:24:19,045 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:24:19,048 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:24:19,049 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:24:19,052 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:24:19,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:24:18" (1/3) ... [2023-11-28 20:24:19,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd29874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:19, skipping insertion in model container [2023-11-28 20:24:19,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:24:18" (2/3) ... [2023-11-28 20:24:19,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd29874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:24:19, skipping insertion in model container [2023-11-28 20:24:19,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:19" (3/3) ... [2023-11-28 20:24:19,055 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2023-11-28 20:24:19,075 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:24:19,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-28 20:24:19,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:24:19,132 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;@8380be0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:24:19,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-28 20:24:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 37 states have internal predecessors, (70), 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) [2023-11-28 20:24:19,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-28 20:24:19,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:19,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:19,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:19,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:19,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1223280439, now seen corresponding path program 1 times [2023-11-28 20:24:19,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:19,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138300981] [2023-11-28 20:24:19,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:19,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:19,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:19,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138300981] [2023-11-28 20:24:19,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138300981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:19,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:19,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:19,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180417841] [2023-11-28 20:24:19,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:19,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:19,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:19,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:19,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:19,400 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.9444444444444444) internal successors, (70), 37 states have internal predecessors, (70), 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 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-28 20:24:19,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:19,451 INFO L93 Difference]: Finished difference Result 78 states and 141 transitions. [2023-11-28 20:24:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:19,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2023-11-28 20:24:19,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:19,462 INFO L225 Difference]: With dead ends: 78 [2023-11-28 20:24:19,463 INFO L226 Difference]: Without dead ends: 68 [2023-11-28 20:24:19,465 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 [2023-11-28 20:24:19,469 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 50 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:19,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 130 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:19,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-28 20:24:19,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 46. [2023-11-28 20:24:19,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 45 states have internal predecessors, (85), 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) [2023-11-28 20:24:19,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 85 transitions. [2023-11-28 20:24:19,515 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 85 transitions. Word has length 16 [2023-11-28 20:24:19,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:19,516 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 85 transitions. [2023-11-28 20:24:19,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-28 20:24:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 85 transitions. [2023-11-28 20:24:19,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-28 20:24:19,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:19,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:19,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 20:24:19,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:19,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:19,519 INFO L85 PathProgramCache]: Analyzing trace with hash 636474425, now seen corresponding path program 1 times [2023-11-28 20:24:19,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:19,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900154386] [2023-11-28 20:24:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:19,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:19,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:19,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:19,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900154386] [2023-11-28 20:24:19,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900154386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:19,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:19,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:19,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143355909] [2023-11-28 20:24:19,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:19,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:19,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:19,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:19,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:19,595 INFO L87 Difference]: Start difference. First operand 46 states and 85 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-28 20:24:19,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:19,619 INFO L93 Difference]: Finished difference Result 113 states and 208 transitions. [2023-11-28 20:24:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:19,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2023-11-28 20:24:19,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:19,621 INFO L225 Difference]: With dead ends: 113 [2023-11-28 20:24:19,621 INFO L226 Difference]: Without dead ends: 68 [2023-11-28 20:24:19,622 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 [2023-11-28 20:24:19,623 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 48 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:19,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 140 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:19,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-28 20:24:19,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2023-11-28 20:24:19,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.8615384615384616) internal successors, (121), 65 states have internal predecessors, (121), 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) [2023-11-28 20:24:19,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 121 transitions. [2023-11-28 20:24:19,635 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 121 transitions. Word has length 16 [2023-11-28 20:24:19,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:19,635 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 121 transitions. [2023-11-28 20:24:19,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-28 20:24:19,636 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 121 transitions. [2023-11-28 20:24:19,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-28 20:24:19,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:19,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:19,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 20:24:19,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:19,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash -732798707, now seen corresponding path program 1 times [2023-11-28 20:24:19,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:19,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71301787] [2023-11-28 20:24:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:19,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:19,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:19,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71301787] [2023-11-28 20:24:19,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71301787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:19,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:19,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:19,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122841687] [2023-11-28 20:24:19,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:19,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:19,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:19,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:19,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:19,694 INFO L87 Difference]: Start difference. First operand 66 states and 121 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-28 20:24:19,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:19,713 INFO L93 Difference]: Finished difference Result 104 states and 185 transitions. [2023-11-28 20:24:19,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:19,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-11-28 20:24:19,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:19,715 INFO L225 Difference]: With dead ends: 104 [2023-11-28 20:24:19,715 INFO L226 Difference]: Without dead ends: 71 [2023-11-28 20:24:19,715 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 [2023-11-28 20:24:19,717 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 50 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:19,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 157 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-28 20:24:19,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2023-11-28 20:24:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.8088235294117647) internal successors, (123), 68 states have internal predecessors, (123), 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) [2023-11-28 20:24:19,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 123 transitions. [2023-11-28 20:24:19,726 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 123 transitions. Word has length 17 [2023-11-28 20:24:19,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:19,727 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 123 transitions. [2023-11-28 20:24:19,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-28 20:24:19,727 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 123 transitions. [2023-11-28 20:24:19,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-28 20:24:19,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:19,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:19,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 20:24:19,729 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:19,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:19,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1743915957, now seen corresponding path program 1 times [2023-11-28 20:24:19,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:19,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850152970] [2023-11-28 20:24:19,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:19,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:19,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:19,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850152970] [2023-11-28 20:24:19,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850152970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:19,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:19,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:19,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683150158] [2023-11-28 20:24:19,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:19,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:19,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:19,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:19,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:19,777 INFO L87 Difference]: Start difference. First operand 69 states and 123 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-28 20:24:19,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:19,794 INFO L93 Difference]: Finished difference Result 132 states and 236 transitions. [2023-11-28 20:24:19,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:19,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-11-28 20:24:19,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:19,796 INFO L225 Difference]: With dead ends: 132 [2023-11-28 20:24:19,797 INFO L226 Difference]: Without dead ends: 130 [2023-11-28 20:24:19,797 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 [2023-11-28 20:24:19,799 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 45 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:19,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 122 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:19,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-28 20:24:19,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 92. [2023-11-28 20:24:19,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.8021978021978022) internal successors, (164), 91 states have internal predecessors, (164), 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) [2023-11-28 20:24:19,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 164 transitions. [2023-11-28 20:24:19,812 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 164 transitions. Word has length 17 [2023-11-28 20:24:19,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:19,813 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 164 transitions. [2023-11-28 20:24:19,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-28 20:24:19,813 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 164 transitions. [2023-11-28 20:24:19,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-28 20:24:19,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:19,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:19,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 20:24:19,815 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:19,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:19,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1964245325, now seen corresponding path program 1 times [2023-11-28 20:24:19,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:19,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400408707] [2023-11-28 20:24:19,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:19,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:19,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:19,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:19,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400408707] [2023-11-28 20:24:19,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400408707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:19,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:19,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:19,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928899407] [2023-11-28 20:24:19,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:19,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:19,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:19,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:19,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:19,858 INFO L87 Difference]: Start difference. First operand 92 states and 164 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-28 20:24:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:19,877 INFO L93 Difference]: Finished difference Result 220 states and 394 transitions. [2023-11-28 20:24:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:19,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2023-11-28 20:24:19,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:19,879 INFO L225 Difference]: With dead ends: 220 [2023-11-28 20:24:19,879 INFO L226 Difference]: Without dead ends: 132 [2023-11-28 20:24:19,880 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 [2023-11-28 20:24:19,881 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 47 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:19,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 141 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:19,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-28 20:24:19,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2023-11-28 20:24:19,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.7829457364341086) internal successors, (230), 129 states have internal predecessors, (230), 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) [2023-11-28 20:24:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 230 transitions. [2023-11-28 20:24:19,893 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 230 transitions. Word has length 17 [2023-11-28 20:24:19,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:19,894 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 230 transitions. [2023-11-28 20:24:19,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-11-28 20:24:19,894 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 230 transitions. [2023-11-28 20:24:19,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-28 20:24:19,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:19,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:19,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 20:24:19,896 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:19,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:19,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1773393870, now seen corresponding path program 1 times [2023-11-28 20:24:19,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:19,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808292003] [2023-11-28 20:24:19,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:19,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:19,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:19,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808292003] [2023-11-28 20:24:19,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808292003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:19,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:19,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:19,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036644921] [2023-11-28 20:24:19,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:19,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:19,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:19,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:19,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:19,935 INFO L87 Difference]: Start difference. First operand 130 states and 230 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-28 20:24:19,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:19,950 INFO L93 Difference]: Finished difference Result 197 states and 345 transitions. [2023-11-28 20:24:19,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:19,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-11-28 20:24:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:19,951 INFO L225 Difference]: With dead ends: 197 [2023-11-28 20:24:19,952 INFO L226 Difference]: Without dead ends: 134 [2023-11-28 20:24:19,952 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 [2023-11-28 20:24:19,954 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 49 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:19,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 153 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:19,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-28 20:24:19,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2023-11-28 20:24:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.7557251908396947) internal successors, (230), 131 states have internal predecessors, (230), 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) [2023-11-28 20:24:19,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 230 transitions. [2023-11-28 20:24:19,965 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 230 transitions. Word has length 18 [2023-11-28 20:24:19,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:19,966 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 230 transitions. [2023-11-28 20:24:19,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-28 20:24:19,966 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 230 transitions. [2023-11-28 20:24:19,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-28 20:24:19,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:19,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:19,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 20:24:19,968 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:19,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:19,968 INFO L85 PathProgramCache]: Analyzing trace with hash 762276620, now seen corresponding path program 1 times [2023-11-28 20:24:19,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:19,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467150835] [2023-11-28 20:24:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:19,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:19,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:20,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467150835] [2023-11-28 20:24:20,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467150835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:20,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:20,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:20,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841767150] [2023-11-28 20:24:20,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:20,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:20,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:20,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:20,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:20,002 INFO L87 Difference]: Start difference. First operand 132 states and 230 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-28 20:24:20,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:20,020 INFO L93 Difference]: Finished difference Result 380 states and 664 transitions. [2023-11-28 20:24:20,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:20,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-11-28 20:24:20,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:20,023 INFO L225 Difference]: With dead ends: 380 [2023-11-28 20:24:20,023 INFO L226 Difference]: Without dead ends: 254 [2023-11-28 20:24:20,024 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 [2023-11-28 20:24:20,025 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 47 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:20,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 124 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:20,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-28 20:24:20,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 252. [2023-11-28 20:24:20,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.7290836653386454) internal successors, (434), 251 states have internal predecessors, (434), 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) [2023-11-28 20:24:20,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 434 transitions. [2023-11-28 20:24:20,043 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 434 transitions. Word has length 18 [2023-11-28 20:24:20,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:20,043 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 434 transitions. [2023-11-28 20:24:20,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-28 20:24:20,043 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 434 transitions. [2023-11-28 20:24:20,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-28 20:24:20,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:20,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:20,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 20:24:20,045 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:20,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:20,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1349082634, now seen corresponding path program 1 times [2023-11-28 20:24:20,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:20,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259382267] [2023-11-28 20:24:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:20,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:20,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:20,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259382267] [2023-11-28 20:24:20,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259382267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:20,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:20,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:20,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983412786] [2023-11-28 20:24:20,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:20,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:20,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:20,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:20,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:20,079 INFO L87 Difference]: Start difference. First operand 252 states and 434 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-28 20:24:20,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:20,096 INFO L93 Difference]: Finished difference Result 320 states and 556 transitions. [2023-11-28 20:24:20,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:20,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-11-28 20:24:20,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:20,099 INFO L225 Difference]: With dead ends: 320 [2023-11-28 20:24:20,099 INFO L226 Difference]: Without dead ends: 318 [2023-11-28 20:24:20,099 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 [2023-11-28 20:24:20,100 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 42 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:20,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 167 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:20,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-28 20:24:20,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 252. [2023-11-28 20:24:20,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.7131474103585658) internal successors, (430), 251 states have internal predecessors, (430), 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) [2023-11-28 20:24:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 430 transitions. [2023-11-28 20:24:20,121 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 430 transitions. Word has length 18 [2023-11-28 20:24:20,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:20,121 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 430 transitions. [2023-11-28 20:24:20,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-28 20:24:20,122 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 430 transitions. [2023-11-28 20:24:20,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-28 20:24:20,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:20,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:20,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-28 20:24:20,124 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:20,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:20,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2139014526, now seen corresponding path program 1 times [2023-11-28 20:24:20,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:20,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648840032] [2023-11-28 20:24:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:20,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:20,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:20,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648840032] [2023-11-28 20:24:20,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648840032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:20,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:20,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:20,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968688642] [2023-11-28 20:24:20,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:20,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:20,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:20,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:20,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:20,163 INFO L87 Difference]: Start difference. First operand 252 states and 430 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) 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) [2023-11-28 20:24:20,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:20,208 INFO L93 Difference]: Finished difference Result 468 states and 808 transitions. [2023-11-28 20:24:20,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:20,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) 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 [2023-11-28 20:24:20,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:20,216 INFO L225 Difference]: With dead ends: 468 [2023-11-28 20:24:20,216 INFO L226 Difference]: Without dead ends: 466 [2023-11-28 20:24:20,218 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 [2023-11-28 20:24:20,221 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 39 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:20,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 118 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:20,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-11-28 20:24:20,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 352. [2023-11-28 20:24:20,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 1.6809116809116809) internal successors, (590), 351 states have internal predecessors, (590), 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) [2023-11-28 20:24:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 590 transitions. [2023-11-28 20:24:20,242 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 590 transitions. Word has length 19 [2023-11-28 20:24:20,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:20,242 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 590 transitions. [2023-11-28 20:24:20,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) 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) [2023-11-28 20:24:20,243 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 590 transitions. [2023-11-28 20:24:20,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-28 20:24:20,244 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:20,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:20,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 20:24:20,245 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:20,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:20,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1569146756, now seen corresponding path program 1 times [2023-11-28 20:24:20,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:20,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043061518] [2023-11-28 20:24:20,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:20,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:20,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:20,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043061518] [2023-11-28 20:24:20,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043061518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:20,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:20,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:20,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829950784] [2023-11-28 20:24:20,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:20,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:20,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:20,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:20,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:20,279 INFO L87 Difference]: Start difference. First operand 352 states and 590 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) 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) [2023-11-28 20:24:20,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:20,305 INFO L93 Difference]: Finished difference Result 836 states and 1408 transitions. [2023-11-28 20:24:20,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:20,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) 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 [2023-11-28 20:24:20,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:20,309 INFO L225 Difference]: With dead ends: 836 [2023-11-28 20:24:20,309 INFO L226 Difference]: Without dead ends: 490 [2023-11-28 20:24:20,310 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 [2023-11-28 20:24:20,311 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 45 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:20,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 143 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:20,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-11-28 20:24:20,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 488. [2023-11-28 20:24:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.6632443531827514) internal successors, (810), 487 states have internal predecessors, (810), 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) [2023-11-28 20:24:20,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 810 transitions. [2023-11-28 20:24:20,336 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 810 transitions. Word has length 19 [2023-11-28 20:24:20,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:20,337 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 810 transitions. [2023-11-28 20:24:20,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) 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) [2023-11-28 20:24:20,337 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 810 transitions. [2023-11-28 20:24:20,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-28 20:24:20,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:20,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:20,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 20:24:20,339 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:20,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:20,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1884726495, now seen corresponding path program 1 times [2023-11-28 20:24:20,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:20,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246805472] [2023-11-28 20:24:20,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:20,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:20,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:20,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:20,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246805472] [2023-11-28 20:24:20,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246805472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:20,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:20,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:20,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384129855] [2023-11-28 20:24:20,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:20,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:20,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:20,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:20,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:20,368 INFO L87 Difference]: Start difference. First operand 488 states and 810 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-28 20:24:20,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:20,390 INFO L93 Difference]: Finished difference Result 740 states and 1224 transitions. [2023-11-28 20:24:20,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:20,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2023-11-28 20:24:20,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:20,394 INFO L225 Difference]: With dead ends: 740 [2023-11-28 20:24:20,394 INFO L226 Difference]: Without dead ends: 502 [2023-11-28 20:24:20,395 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 [2023-11-28 20:24:20,395 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 47 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:20,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 145 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:20,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2023-11-28 20:24:20,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 500. [2023-11-28 20:24:20,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.6392785571142285) internal successors, (818), 499 states have internal predecessors, (818), 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) [2023-11-28 20:24:20,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 818 transitions. [2023-11-28 20:24:20,417 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 818 transitions. Word has length 20 [2023-11-28 20:24:20,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:20,417 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 818 transitions. [2023-11-28 20:24:20,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-28 20:24:20,417 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 818 transitions. [2023-11-28 20:24:20,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-28 20:24:20,418 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:20,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:20,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 20:24:20,419 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:20,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:20,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1399123551, now seen corresponding path program 1 times [2023-11-28 20:24:20,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:20,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721267900] [2023-11-28 20:24:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:20,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:20,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:20,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721267900] [2023-11-28 20:24:20,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721267900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:20,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:20,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:20,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892826074] [2023-11-28 20:24:20,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:20,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:20,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:20,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:20,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:20,447 INFO L87 Difference]: Start difference. First operand 500 states and 818 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-28 20:24:20,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:20,476 INFO L93 Difference]: Finished difference Result 904 states and 1500 transitions. [2023-11-28 20:24:20,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:20,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2023-11-28 20:24:20,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:20,482 INFO L225 Difference]: With dead ends: 904 [2023-11-28 20:24:20,482 INFO L226 Difference]: Without dead ends: 902 [2023-11-28 20:24:20,483 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 [2023-11-28 20:24:20,483 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 36 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:20,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 116 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:20,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2023-11-28 20:24:20,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 708. [2023-11-28 20:24:20,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.5983026874115982) internal successors, (1130), 707 states have internal predecessors, (1130), 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) [2023-11-28 20:24:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1130 transitions. [2023-11-28 20:24:20,512 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1130 transitions. Word has length 20 [2023-11-28 20:24:20,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:20,513 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 1130 transitions. [2023-11-28 20:24:20,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-28 20:24:20,513 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1130 transitions. [2023-11-28 20:24:20,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-28 20:24:20,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:20,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:20,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-28 20:24:20,515 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:20,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:20,515 INFO L85 PathProgramCache]: Analyzing trace with hash 812317537, now seen corresponding path program 1 times [2023-11-28 20:24:20,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:20,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469544417] [2023-11-28 20:24:20,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:20,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:20,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:20,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:20,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469544417] [2023-11-28 20:24:20,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469544417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:20,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:20,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:20,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787680311] [2023-11-28 20:24:20,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:20,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:20,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:20,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:20,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:20,542 INFO L87 Difference]: Start difference. First operand 708 states and 1130 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-28 20:24:20,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:20,579 INFO L93 Difference]: Finished difference Result 1656 states and 2652 transitions. [2023-11-28 20:24:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:20,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2023-11-28 20:24:20,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:20,585 INFO L225 Difference]: With dead ends: 1656 [2023-11-28 20:24:20,586 INFO L226 Difference]: Without dead ends: 966 [2023-11-28 20:24:20,587 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 [2023-11-28 20:24:20,587 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 44 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:20,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 144 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:20,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2023-11-28 20:24:20,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 964. [2023-11-28 20:24:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 963 states have (on average 1.5804776739356179) internal successors, (1522), 963 states have internal predecessors, (1522), 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) [2023-11-28 20:24:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1522 transitions. [2023-11-28 20:24:20,630 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1522 transitions. Word has length 20 [2023-11-28 20:24:20,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:20,631 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1522 transitions. [2023-11-28 20:24:20,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-28 20:24:20,631 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1522 transitions. [2023-11-28 20:24:20,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-28 20:24:20,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:20,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:20,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-28 20:24:20,633 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:20,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:20,633 INFO L85 PathProgramCache]: Analyzing trace with hash 423371833, now seen corresponding path program 1 times [2023-11-28 20:24:20,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:20,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049168841] [2023-11-28 20:24:20,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:20,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:20,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:20,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049168841] [2023-11-28 20:24:20,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049168841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:20,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:20,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:20,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325823042] [2023-11-28 20:24:20,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:20,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:20,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:20,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:20,666 INFO L87 Difference]: Start difference. First operand 964 states and 1522 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-28 20:24:20,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:20,702 INFO L93 Difference]: Finished difference Result 1448 states and 2276 transitions. [2023-11-28 20:24:20,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:20,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2023-11-28 20:24:20,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:20,708 INFO L225 Difference]: With dead ends: 1448 [2023-11-28 20:24:20,708 INFO L226 Difference]: Without dead ends: 982 [2023-11-28 20:24:20,709 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 [2023-11-28 20:24:20,709 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 46 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:20,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 141 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:20,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-11-28 20:24:20,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 980. [2023-11-28 20:24:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 979 states have (on average 1.5546475995914197) internal successors, (1522), 979 states have internal predecessors, (1522), 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) [2023-11-28 20:24:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1522 transitions. [2023-11-28 20:24:20,754 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1522 transitions. Word has length 21 [2023-11-28 20:24:20,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:20,754 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1522 transitions. [2023-11-28 20:24:20,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-28 20:24:20,754 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1522 transitions. [2023-11-28 20:24:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-28 20:24:20,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:20,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:20,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-28 20:24:20,756 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:20,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:20,757 INFO L85 PathProgramCache]: Analyzing trace with hash -587745417, now seen corresponding path program 1 times [2023-11-28 20:24:20,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:20,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650771713] [2023-11-28 20:24:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:20,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:20,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:20,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:20,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650771713] [2023-11-28 20:24:20,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650771713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:20,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:20,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:20,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250257498] [2023-11-28 20:24:20,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:20,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:20,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:20,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:20,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:20,781 INFO L87 Difference]: Start difference. First operand 980 states and 1522 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-28 20:24:20,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:20,835 INFO L93 Difference]: Finished difference Result 1736 states and 2740 transitions. [2023-11-28 20:24:20,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:20,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2023-11-28 20:24:20,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:20,845 INFO L225 Difference]: With dead ends: 1736 [2023-11-28 20:24:20,845 INFO L226 Difference]: Without dead ends: 1734 [2023-11-28 20:24:20,846 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 [2023-11-28 20:24:20,847 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 33 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:20,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 114 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:20,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2023-11-28 20:24:20,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1412. [2023-11-28 20:24:20,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 1.5095676824946846) internal successors, (2130), 1411 states have internal predecessors, (2130), 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) [2023-11-28 20:24:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2130 transitions. [2023-11-28 20:24:20,903 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2130 transitions. Word has length 21 [2023-11-28 20:24:20,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:20,904 INFO L495 AbstractCegarLoop]: Abstraction has 1412 states and 2130 transitions. [2023-11-28 20:24:20,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-28 20:24:20,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2130 transitions. [2023-11-28 20:24:20,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-28 20:24:20,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:20,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:20,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-28 20:24:20,907 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:20,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:20,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1174551431, now seen corresponding path program 1 times [2023-11-28 20:24:20,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:20,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855927009] [2023-11-28 20:24:20,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:20,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:20,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:20,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855927009] [2023-11-28 20:24:20,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855927009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:20,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:20,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:20,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344104398] [2023-11-28 20:24:20,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:20,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:20,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:20,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:20,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:20,931 INFO L87 Difference]: Start difference. First operand 1412 states and 2130 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-28 20:24:20,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:20,994 INFO L93 Difference]: Finished difference Result 3272 states and 4948 transitions. [2023-11-28 20:24:20,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:20,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2023-11-28 20:24:20,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:21,004 INFO L225 Difference]: With dead ends: 3272 [2023-11-28 20:24:21,005 INFO L226 Difference]: Without dead ends: 1894 [2023-11-28 20:24:21,007 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 [2023-11-28 20:24:21,007 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 43 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:21,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 145 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:21,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2023-11-28 20:24:21,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1892. [2023-11-28 20:24:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 1.4902168164992067) internal successors, (2818), 1891 states have internal predecessors, (2818), 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) [2023-11-28 20:24:21,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2818 transitions. [2023-11-28 20:24:21,101 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2818 transitions. Word has length 21 [2023-11-28 20:24:21,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:21,101 INFO L495 AbstractCegarLoop]: Abstraction has 1892 states and 2818 transitions. [2023-11-28 20:24:21,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-28 20:24:21,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2818 transitions. [2023-11-28 20:24:21,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-28 20:24:21,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:21,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:21,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-28 20:24:21,104 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:21,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:21,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1040023690, now seen corresponding path program 1 times [2023-11-28 20:24:21,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:21,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518446764] [2023-11-28 20:24:21,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:21,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:21,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:21,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:21,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518446764] [2023-11-28 20:24:21,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518446764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:21,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:21,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:21,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627969879] [2023-11-28 20:24:21,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:21,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:21,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:21,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:21,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:21,129 INFO L87 Difference]: Start difference. First operand 1892 states and 2818 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-28 20:24:21,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:21,184 INFO L93 Difference]: Finished difference Result 2840 states and 4212 transitions. [2023-11-28 20:24:21,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:21,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2023-11-28 20:24:21,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:21,194 INFO L225 Difference]: With dead ends: 2840 [2023-11-28 20:24:21,194 INFO L226 Difference]: Without dead ends: 1926 [2023-11-28 20:24:21,196 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 [2023-11-28 20:24:21,196 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 45 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:21,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 137 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:21,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2023-11-28 20:24:21,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1924. [2023-11-28 20:24:21,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 1.4654186167446699) internal successors, (2818), 1923 states have internal predecessors, (2818), 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) [2023-11-28 20:24:21,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2818 transitions. [2023-11-28 20:24:21,280 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2818 transitions. Word has length 22 [2023-11-28 20:24:21,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:21,281 INFO L495 AbstractCegarLoop]: Abstraction has 1924 states and 2818 transitions. [2023-11-28 20:24:21,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-28 20:24:21,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2818 transitions. [2023-11-28 20:24:21,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-28 20:24:21,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:21,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:21,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-28 20:24:21,284 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:21,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:21,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2051140940, now seen corresponding path program 1 times [2023-11-28 20:24:21,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:21,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709261378] [2023-11-28 20:24:21,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:21,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:21,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:21,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:21,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709261378] [2023-11-28 20:24:21,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709261378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:21,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:21,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:21,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994741510] [2023-11-28 20:24:21,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:21,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:21,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:21,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:21,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:21,308 INFO L87 Difference]: Start difference. First operand 1924 states and 2818 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-28 20:24:21,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:21,394 INFO L93 Difference]: Finished difference Result 3336 states and 4964 transitions. [2023-11-28 20:24:21,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:21,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2023-11-28 20:24:21,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:21,412 INFO L225 Difference]: With dead ends: 3336 [2023-11-28 20:24:21,412 INFO L226 Difference]: Without dead ends: 3334 [2023-11-28 20:24:21,413 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 [2023-11-28 20:24:21,413 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 30 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:21,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 112 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:21,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2023-11-28 20:24:21,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 2820. [2023-11-28 20:24:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2820 states, 2819 states have (on average 1.4196523589925505) internal successors, (4002), 2819 states have internal predecessors, (4002), 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) [2023-11-28 20:24:21,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 4002 transitions. [2023-11-28 20:24:21,529 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 4002 transitions. Word has length 22 [2023-11-28 20:24:21,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:21,530 INFO L495 AbstractCegarLoop]: Abstraction has 2820 states and 4002 transitions. [2023-11-28 20:24:21,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-28 20:24:21,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 4002 transitions. [2023-11-28 20:24:21,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-28 20:24:21,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:21,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:21,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-28 20:24:21,534 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:21,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:21,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1657020342, now seen corresponding path program 1 times [2023-11-28 20:24:21,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:21,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355257250] [2023-11-28 20:24:21,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:21,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:21,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:21,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355257250] [2023-11-28 20:24:21,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355257250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:21,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:21,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:21,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849530898] [2023-11-28 20:24:21,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:21,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:21,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:21,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:21,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:21,557 INFO L87 Difference]: Start difference. First operand 2820 states and 4002 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-28 20:24:21,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:21,666 INFO L93 Difference]: Finished difference Result 6472 states and 9188 transitions. [2023-11-28 20:24:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:21,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2023-11-28 20:24:21,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:21,685 INFO L225 Difference]: With dead ends: 6472 [2023-11-28 20:24:21,685 INFO L226 Difference]: Without dead ends: 3718 [2023-11-28 20:24:21,689 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 [2023-11-28 20:24:21,690 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 42 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:21,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 146 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:21,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2023-11-28 20:24:21,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 3716. [2023-11-28 20:24:21,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3716 states, 3715 states have (on average 1.3959623149394347) internal successors, (5186), 3715 states have internal predecessors, (5186), 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) [2023-11-28 20:24:21,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3716 states to 3716 states and 5186 transitions. [2023-11-28 20:24:21,855 INFO L78 Accepts]: Start accepts. Automaton has 3716 states and 5186 transitions. Word has length 22 [2023-11-28 20:24:21,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:21,855 INFO L495 AbstractCegarLoop]: Abstraction has 3716 states and 5186 transitions. [2023-11-28 20:24:21,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-28 20:24:21,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3716 states and 5186 transitions. [2023-11-28 20:24:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-28 20:24:21,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:21,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:21,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-28 20:24:21,861 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:21,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:21,861 INFO L85 PathProgramCache]: Analyzing trace with hash 839355694, now seen corresponding path program 1 times [2023-11-28 20:24:21,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:21,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085426702] [2023-11-28 20:24:21,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:21,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:21,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:21,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085426702] [2023-11-28 20:24:21,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085426702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:21,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:21,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:21,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393798390] [2023-11-28 20:24:21,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:21,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:21,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:21,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:21,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:21,884 INFO L87 Difference]: Start difference. First operand 3716 states and 5186 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-28 20:24:21,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:21,986 INFO L93 Difference]: Finished difference Result 5576 states and 7748 transitions. [2023-11-28 20:24:21,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:21,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2023-11-28 20:24:21,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:22,006 INFO L225 Difference]: With dead ends: 5576 [2023-11-28 20:24:22,006 INFO L226 Difference]: Without dead ends: 3782 [2023-11-28 20:24:22,009 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 [2023-11-28 20:24:22,009 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 44 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:22,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 133 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:22,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2023-11-28 20:24:22,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 3780. [2023-11-28 20:24:22,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3779 states have (on average 1.372320719767134) internal successors, (5186), 3779 states have internal predecessors, (5186), 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) [2023-11-28 20:24:22,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 5186 transitions. [2023-11-28 20:24:22,196 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 5186 transitions. Word has length 23 [2023-11-28 20:24:22,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:22,196 INFO L495 AbstractCegarLoop]: Abstraction has 3780 states and 5186 transitions. [2023-11-28 20:24:22,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-28 20:24:22,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 5186 transitions. [2023-11-28 20:24:22,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-28 20:24:22,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:22,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:22,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-28 20:24:22,201 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:22,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:22,202 INFO L85 PathProgramCache]: Analyzing trace with hash -171761556, now seen corresponding path program 1 times [2023-11-28 20:24:22,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:22,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177736573] [2023-11-28 20:24:22,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:22,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:22,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:22,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:22,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177736573] [2023-11-28 20:24:22,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177736573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:22,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:22,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:22,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179687370] [2023-11-28 20:24:22,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:22,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:22,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:22,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:22,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:22,226 INFO L87 Difference]: Start difference. First operand 3780 states and 5186 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-28 20:24:22,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:22,400 INFO L93 Difference]: Finished difference Result 6408 states and 8900 transitions. [2023-11-28 20:24:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:22,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2023-11-28 20:24:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:22,430 INFO L225 Difference]: With dead ends: 6408 [2023-11-28 20:24:22,430 INFO L226 Difference]: Without dead ends: 6406 [2023-11-28 20:24:22,432 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 [2023-11-28 20:24:22,433 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 27 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:22,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 110 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:22,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6406 states. [2023-11-28 20:24:22,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6406 to 5636. [2023-11-28 20:24:22,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5636 states, 5635 states have (on average 1.329192546583851) internal successors, (7490), 5635 states have internal predecessors, (7490), 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) [2023-11-28 20:24:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5636 states to 5636 states and 7490 transitions. [2023-11-28 20:24:22,615 INFO L78 Accepts]: Start accepts. Automaton has 5636 states and 7490 transitions. Word has length 23 [2023-11-28 20:24:22,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:22,615 INFO L495 AbstractCegarLoop]: Abstraction has 5636 states and 7490 transitions. [2023-11-28 20:24:22,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-28 20:24:22,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5636 states and 7490 transitions. [2023-11-28 20:24:22,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-28 20:24:22,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:22,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:22,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-28 20:24:22,624 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:22,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:22,624 INFO L85 PathProgramCache]: Analyzing trace with hash -758567570, now seen corresponding path program 1 times [2023-11-28 20:24:22,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:22,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092608234] [2023-11-28 20:24:22,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:22,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:22,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:22,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:22,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092608234] [2023-11-28 20:24:22,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092608234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:22,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:22,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:22,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529694962] [2023-11-28 20:24:22,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:22,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:22,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:22,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:22,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:22,645 INFO L87 Difference]: Start difference. First operand 5636 states and 7490 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-28 20:24:22,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:22,825 INFO L93 Difference]: Finished difference Result 12808 states and 16964 transitions. [2023-11-28 20:24:22,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:22,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2023-11-28 20:24:22,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:22,838 INFO L225 Difference]: With dead ends: 12808 [2023-11-28 20:24:22,838 INFO L226 Difference]: Without dead ends: 7302 [2023-11-28 20:24:22,845 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 [2023-11-28 20:24:22,845 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 41 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:22,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 147 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:22,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7302 states. [2023-11-28 20:24:23,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7302 to 7300. [2023-11-28 20:24:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7300 states, 7299 states have (on average 1.297986025482943) internal successors, (9474), 7299 states have internal predecessors, (9474), 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) [2023-11-28 20:24:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7300 states to 7300 states and 9474 transitions. [2023-11-28 20:24:23,101 INFO L78 Accepts]: Start accepts. Automaton has 7300 states and 9474 transitions. Word has length 23 [2023-11-28 20:24:23,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:23,102 INFO L495 AbstractCegarLoop]: Abstraction has 7300 states and 9474 transitions. [2023-11-28 20:24:23,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-28 20:24:23,103 INFO L276 IsEmpty]: Start isEmpty. Operand 7300 states and 9474 transitions. [2023-11-28 20:24:23,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-28 20:24:23,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:23,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:23,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-28 20:24:23,111 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:23,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:23,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1029425205, now seen corresponding path program 1 times [2023-11-28 20:24:23,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:23,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633995355] [2023-11-28 20:24:23,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:23,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:23,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:23,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633995355] [2023-11-28 20:24:23,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633995355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:23,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:23,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:23,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134021732] [2023-11-28 20:24:23,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:23,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:23,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:23,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:23,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:23,135 INFO L87 Difference]: Start difference. First operand 7300 states and 9474 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-28 20:24:23,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:23,300 INFO L93 Difference]: Finished difference Result 10952 states and 14148 transitions. [2023-11-28 20:24:23,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:23,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2023-11-28 20:24:23,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:23,313 INFO L225 Difference]: With dead ends: 10952 [2023-11-28 20:24:23,313 INFO L226 Difference]: Without dead ends: 7430 [2023-11-28 20:24:23,319 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 [2023-11-28 20:24:23,319 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 43 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:23,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 129 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:23,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7430 states. [2023-11-28 20:24:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7430 to 7428. [2023-11-28 20:24:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7428 states, 7427 states have (on average 1.2756159956913962) internal successors, (9474), 7427 states have internal predecessors, (9474), 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) [2023-11-28 20:24:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7428 states to 7428 states and 9474 transitions. [2023-11-28 20:24:23,617 INFO L78 Accepts]: Start accepts. Automaton has 7428 states and 9474 transitions. Word has length 24 [2023-11-28 20:24:23,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:23,617 INFO L495 AbstractCegarLoop]: Abstraction has 7428 states and 9474 transitions. [2023-11-28 20:24:23,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-28 20:24:23,618 INFO L276 IsEmpty]: Start isEmpty. Operand 7428 states and 9474 transitions. [2023-11-28 20:24:23,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-28 20:24:23,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:23,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:23,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-28 20:24:23,628 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:23,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:23,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2040542455, now seen corresponding path program 1 times [2023-11-28 20:24:23,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:23,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921877141] [2023-11-28 20:24:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:23,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:23,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:23,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:23,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921877141] [2023-11-28 20:24:23,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921877141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:23,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:23,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:23,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547955857] [2023-11-28 20:24:23,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:23,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:23,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:23,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:23,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:23,655 INFO L87 Difference]: Start difference. First operand 7428 states and 9474 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-28 20:24:23,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:23,924 INFO L93 Difference]: Finished difference Result 12296 states and 15748 transitions. [2023-11-28 20:24:23,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:23,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2023-11-28 20:24:23,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:23,945 INFO L225 Difference]: With dead ends: 12296 [2023-11-28 20:24:23,946 INFO L226 Difference]: Without dead ends: 12294 [2023-11-28 20:24:23,948 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 [2023-11-28 20:24:23,949 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 24 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:23,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 108 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:23,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12294 states. [2023-11-28 20:24:24,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12294 to 11268. [2023-11-28 20:24:24,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11268 states, 11267 states have (on average 1.2384840685186829) internal successors, (13954), 11267 states have internal predecessors, (13954), 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) [2023-11-28 20:24:24,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11268 states to 11268 states and 13954 transitions. [2023-11-28 20:24:24,256 INFO L78 Accepts]: Start accepts. Automaton has 11268 states and 13954 transitions. Word has length 24 [2023-11-28 20:24:24,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:24,257 INFO L495 AbstractCegarLoop]: Abstraction has 11268 states and 13954 transitions. [2023-11-28 20:24:24,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-28 20:24:24,257 INFO L276 IsEmpty]: Start isEmpty. Operand 11268 states and 13954 transitions. [2023-11-28 20:24:24,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-28 20:24:24,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:24,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:24,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-28 20:24:24,273 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:24,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:24,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1667618827, now seen corresponding path program 1 times [2023-11-28 20:24:24,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:24,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834672295] [2023-11-28 20:24:24,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:24,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:24,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:24,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:24,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834672295] [2023-11-28 20:24:24,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834672295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:24,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:24,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:24,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924837249] [2023-11-28 20:24:24,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:24,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:24,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:24,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:24,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:24,297 INFO L87 Difference]: Start difference. First operand 11268 states and 13954 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-28 20:24:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:24,644 INFO L93 Difference]: Finished difference Result 25352 states and 31108 transitions. [2023-11-28 20:24:24,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:24,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2023-11-28 20:24:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:24,669 INFO L225 Difference]: With dead ends: 25352 [2023-11-28 20:24:24,669 INFO L226 Difference]: Without dead ends: 14342 [2023-11-28 20:24:24,684 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 [2023-11-28 20:24:24,685 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 40 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:24,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 148 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14342 states. [2023-11-28 20:24:25,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14342 to 14340. [2023-11-28 20:24:25,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14340 states, 14339 states have (on average 1.1963177348490133) internal successors, (17154), 14339 states have internal predecessors, (17154), 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) [2023-11-28 20:24:25,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14340 states to 14340 states and 17154 transitions. [2023-11-28 20:24:25,206 INFO L78 Accepts]: Start accepts. Automaton has 14340 states and 17154 transitions. Word has length 24 [2023-11-28 20:24:25,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:25,207 INFO L495 AbstractCegarLoop]: Abstraction has 14340 states and 17154 transitions. [2023-11-28 20:24:25,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-28 20:24:25,207 INFO L276 IsEmpty]: Start isEmpty. Operand 14340 states and 17154 transitions. [2023-11-28 20:24:25,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-28 20:24:25,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:25,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:25,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-28 20:24:25,222 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:25,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:25,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1167909411, now seen corresponding path program 1 times [2023-11-28 20:24:25,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:25,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948568826] [2023-11-28 20:24:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:25,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:25,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:25,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:25,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948568826] [2023-11-28 20:24:25,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948568826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:25,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:25,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:25,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999950033] [2023-11-28 20:24:25,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:25,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:25,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:25,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:25,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:25,241 INFO L87 Difference]: Start difference. First operand 14340 states and 17154 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-28 20:24:25,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:25,481 INFO L93 Difference]: Finished difference Result 21512 states and 25604 transitions. [2023-11-28 20:24:25,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:25,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2023-11-28 20:24:25,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:25,504 INFO L225 Difference]: With dead ends: 21512 [2023-11-28 20:24:25,505 INFO L226 Difference]: Without dead ends: 14598 [2023-11-28 20:24:25,512 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 [2023-11-28 20:24:25,513 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 42 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:25,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 125 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:25,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14598 states. [2023-11-28 20:24:25,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14598 to 14596. [2023-11-28 20:24:25,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14596 states, 14595 states have (on average 1.175334018499486) internal successors, (17154), 14595 states have internal predecessors, (17154), 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) [2023-11-28 20:24:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14596 states to 14596 states and 17154 transitions. [2023-11-28 20:24:25,971 INFO L78 Accepts]: Start accepts. Automaton has 14596 states and 17154 transitions. Word has length 25 [2023-11-28 20:24:25,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:25,972 INFO L495 AbstractCegarLoop]: Abstraction has 14596 states and 17154 transitions. [2023-11-28 20:24:25,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-28 20:24:25,972 INFO L276 IsEmpty]: Start isEmpty. Operand 14596 states and 17154 transitions. [2023-11-28 20:24:25,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-28 20:24:25,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:25,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:25,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-28 20:24:25,986 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:25,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:25,986 INFO L85 PathProgramCache]: Analyzing trace with hash 156792161, now seen corresponding path program 1 times [2023-11-28 20:24:25,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:25,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35011111] [2023-11-28 20:24:25,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:25,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:26,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:26,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35011111] [2023-11-28 20:24:26,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35011111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:26,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:26,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:26,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624884773] [2023-11-28 20:24:26,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:26,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:26,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:26,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:26,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:26,009 INFO L87 Difference]: Start difference. First operand 14596 states and 17154 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-28 20:24:26,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:26,529 INFO L93 Difference]: Finished difference Result 23558 states and 27395 transitions. [2023-11-28 20:24:26,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:26,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2023-11-28 20:24:26,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:26,568 INFO L225 Difference]: With dead ends: 23558 [2023-11-28 20:24:26,568 INFO L226 Difference]: Without dead ends: 23556 [2023-11-28 20:24:26,573 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 [2023-11-28 20:24:26,574 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 20 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:26,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 105 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:26,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23556 states. [2023-11-28 20:24:27,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23556 to 22532. [2023-11-28 20:24:27,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22532 states, 22531 states have (on average 1.147663219564156) internal successors, (25858), 22531 states have internal predecessors, (25858), 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) [2023-11-28 20:24:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22532 states to 22532 states and 25858 transitions. [2023-11-28 20:24:27,152 INFO L78 Accepts]: Start accepts. Automaton has 22532 states and 25858 transitions. Word has length 25 [2023-11-28 20:24:27,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:27,152 INFO L495 AbstractCegarLoop]: Abstraction has 22532 states and 25858 transitions. [2023-11-28 20:24:27,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-28 20:24:27,153 INFO L276 IsEmpty]: Start isEmpty. Operand 22532 states and 25858 transitions. [2023-11-28 20:24:27,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-28 20:24:27,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:24:27,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:24:27,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-28 20:24:27,178 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:24:27,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:24:27,178 INFO L85 PathProgramCache]: Analyzing trace with hash -430013853, now seen corresponding path program 1 times [2023-11-28 20:24:27,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:24:27,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063625433] [2023-11-28 20:24:27,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:24:27,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:24:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:24:27,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:24:27,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:24:27,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063625433] [2023-11-28 20:24:27,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063625433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:24:27,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:24:27,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:24:27,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340193845] [2023-11-28 20:24:27,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:24:27,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:24:27,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:24:27,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:24:27,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:24:27,200 INFO L87 Difference]: Start difference. First operand 22532 states and 25858 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-28 20:24:27,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:24:27,622 INFO L93 Difference]: Finished difference Result 50180 states and 56578 transitions. [2023-11-28 20:24:27,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:24:27,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2023-11-28 20:24:27,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:24:27,623 INFO L225 Difference]: With dead ends: 50180 [2023-11-28 20:24:27,623 INFO L226 Difference]: Without dead ends: 0 [2023-11-28 20:24:27,646 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 [2023-11-28 20:24:27,646 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 38 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:24:27,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 147 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:24:27,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-28 20:24:27,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-28 20:24:27,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-11-28 20:24:27,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-28 20:24:27,647 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2023-11-28 20:24:27,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:24:27,647 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-28 20:24:27,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-28 20:24:27,648 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-28 20:24:27,648 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-28 20:24:27,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-28 20:24:27,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-28 20:24:27,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-28 20:24:27,663 INFO L899 garLoopResultBuilder]: For program point L126(line 126) no Hoare annotation was computed. [2023-11-28 20:24:27,664 INFO L899 garLoopResultBuilder]: For program point L151(line 151) no Hoare annotation was computed. [2023-11-28 20:24:27,664 INFO L899 garLoopResultBuilder]: For program point L110-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,664 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 6 165) no Hoare annotation was computed. [2023-11-28 20:24:27,664 INFO L899 garLoopResultBuilder]: For program point L135-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,664 INFO L899 garLoopResultBuilder]: For program point L111(line 111) no Hoare annotation was computed. [2023-11-28 20:24:27,664 INFO L899 garLoopResultBuilder]: For program point L136(line 136) no Hoare annotation was computed. [2023-11-28 20:24:27,664 INFO L899 garLoopResultBuilder]: For program point L161(lines 7 165) no Hoare annotation was computed. [2023-11-28 20:24:27,664 INFO L899 garLoopResultBuilder]: For program point L120-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,664 INFO L899 garLoopResultBuilder]: For program point L145-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,664 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-28 20:24:27,664 INFO L899 garLoopResultBuilder]: For program point L104-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,665 INFO L899 garLoopResultBuilder]: For program point L96-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,665 INFO L899 garLoopResultBuilder]: For program point L121(line 121) no Hoare annotation was computed. [2023-11-28 20:24:27,665 INFO L899 garLoopResultBuilder]: For program point L88-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,665 INFO L899 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2023-11-28 20:24:27,665 INFO L899 garLoopResultBuilder]: For program point L80-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,665 INFO L899 garLoopResultBuilder]: For program point L72-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,665 INFO L899 garLoopResultBuilder]: For program point L130-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,665 INFO L902 garLoopResultBuilder]: At program point L155-1(lines 41 160) the Hoare annotation is: true [2023-11-28 20:24:27,665 INFO L899 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2023-11-28 20:24:27,665 INFO L899 garLoopResultBuilder]: For program point L156(line 156) no Hoare annotation was computed. [2023-11-28 20:24:27,666 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 163) no Hoare annotation was computed. [2023-11-28 20:24:27,666 INFO L899 garLoopResultBuilder]: For program point L115-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,666 INFO L899 garLoopResultBuilder]: For program point L140-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,666 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-28 20:24:27,666 INFO L899 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2023-11-28 20:24:27,666 INFO L899 garLoopResultBuilder]: For program point L141(line 141) no Hoare annotation was computed. [2023-11-28 20:24:27,666 INFO L899 garLoopResultBuilder]: For program point L100-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,666 INFO L899 garLoopResultBuilder]: For program point L125-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,666 INFO L899 garLoopResultBuilder]: For program point L92-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,666 INFO L899 garLoopResultBuilder]: For program point main_ERROR#1(lines 7 165) no Hoare annotation was computed. [2023-11-28 20:24:27,666 INFO L899 garLoopResultBuilder]: For program point L150-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,666 INFO L899 garLoopResultBuilder]: For program point L84-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,667 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 45) no Hoare annotation was computed. [2023-11-28 20:24:27,667 INFO L899 garLoopResultBuilder]: For program point L76-1(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,667 INFO L899 garLoopResultBuilder]: For program point L68(lines 68 70) no Hoare annotation was computed. [2023-11-28 20:24:27,667 INFO L899 garLoopResultBuilder]: For program point L68-2(lines 41 160) no Hoare annotation was computed. [2023-11-28 20:24:27,669 INFO L445 BasicCegarLoop]: Path program 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] [2023-11-28 20:24:27,671 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 20:24:27,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:24:27 BoogieIcfgContainer [2023-11-28 20:24:27,677 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 20:24:27,677 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 20:24:27,677 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 20:24:27,678 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 20:24:27,678 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:24:19" (3/4) ... [2023-11-28 20:24:27,679 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-28 20:24:27,688 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-28 20:24:27,689 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-28 20:24:27,689 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-28 20:24:27,690 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-28 20:24:27,777 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 20:24:27,777 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-28 20:24:27,778 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 20:24:27,778 INFO L158 Benchmark]: Toolchain (without parser) took 9365.56ms. Allocated memory was 144.7MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 113.0MB in the beginning and 654.9MB in the end (delta: -541.9MB). Peak memory consumption was 511.2MB. Max. memory is 16.1GB. [2023-11-28 20:24:27,779 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory is still 55.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 20:24:27,779 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.49ms. Allocated memory is still 144.7MB. Free memory was 113.0MB in the beginning and 102.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-28 20:24:27,780 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.59ms. Allocated memory is still 144.7MB. Free memory was 102.1MB in the beginning and 99.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 20:24:27,780 INFO L158 Benchmark]: Boogie Preprocessor took 36.13ms. Allocated memory is still 144.7MB. Free memory was 99.9MB in the beginning and 97.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 20:24:27,780 INFO L158 Benchmark]: RCFGBuilder took 348.37ms. Allocated memory is still 144.7MB. Free memory was 97.9MB in the beginning and 83.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-28 20:24:27,781 INFO L158 Benchmark]: TraceAbstraction took 8628.46ms. Allocated memory was 144.7MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 83.0MB in the beginning and 661.2MB in the end (delta: -578.2MB). Peak memory consumption was 475.6MB. Max. memory is 16.1GB. [2023-11-28 20:24:27,781 INFO L158 Benchmark]: Witness Printer took 100.49ms. Allocated memory is still 1.2GB. Free memory was 661.2MB in the beginning and 654.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-28 20:24:27,783 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory is still 55.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.49ms. Allocated memory is still 144.7MB. Free memory was 113.0MB in the beginning and 102.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.59ms. Allocated memory is still 144.7MB. Free memory was 102.1MB in the beginning and 99.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.13ms. Allocated memory is still 144.7MB. Free memory was 99.9MB in the beginning and 97.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 348.37ms. Allocated memory is still 144.7MB. Free memory was 97.9MB in the beginning and 83.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8628.46ms. Allocated memory was 144.7MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 83.0MB in the beginning and 661.2MB in the end (delta: -578.2MB). Peak memory consumption was 475.6MB. Max. memory is 16.1GB. * Witness Printer took 100.49ms. Allocated memory is still 1.2GB. Free memory was 661.2MB in the beginning and 654.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 163]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.6s, OverallIterations: 28, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1147 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1147 mSDsluCounter, 3747 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1503 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 181 IncrementalHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 2244 mSDtfsCounter, 181 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22532occurred in iteration=27, InterpolantAutomatonStates: 84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.6s AutomataMinimizationTime, 28 MinimizatonAttempts, 4124 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 1026 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 580 NumberOfCodeBlocks, 580 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 552 ConstructedInterpolants, 0 QuantifiedInterpolants, 1212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-11-28 20:24:27,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fbc95cc-fcb4-46e1-8115-d0a5f3f4c45f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE