./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/bin/uautomizer-verify-LYvppIcaGC --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 f04db10568a800b95189a827d616dfd35581f855ab463aa07cbc605d28fef196 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:51:19,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:51:19,283 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:51:19,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:51:19,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:51:19,344 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:51:19,345 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:51:19,346 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:51:19,346 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:51:19,347 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:51:19,347 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:51:19,347 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:51:19,348 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:51:19,348 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:51:19,349 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:51:19,349 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:51:19,350 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:51:19,350 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:51:19,350 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:51:19,351 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:51:19,351 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:51:19,351 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:51:19,351 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:51:19,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:51:19,352 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:51:19,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:51:19,352 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:51:19,352 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:51:19,352 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:51:19,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:51:19,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:51:19,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:51:19,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:51:19,354 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:51:19,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:51:19,355 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:51:19,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:51:19,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:51:19,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:51:19,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:51:19,355 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:51:19,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:51:19,356 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:51:19,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:51:19,356 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:51:19,356 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:51:19,356 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:51:19,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:51:19,356 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/bin/uautomizer-verify-LYvppIcaGC 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 -> f04db10568a800b95189a827d616dfd35581f855ab463aa07cbc605d28fef196 [2024-11-23 22:51:19,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:51:19,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:51:19,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:51:19,712 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:51:19,713 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:51:19,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-10.i [2024-11-23 22:51:23,593 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/bin/uautomizer-verify-LYvppIcaGC/data/ee022c060/a8761471fe7f4c4db4f627dc2563fced/FLAGc0e177b97 [2024-11-23 22:51:23,979 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:51:23,981 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-10.i [2024-11-23 22:51:23,999 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/bin/uautomizer-verify-LYvppIcaGC/data/ee022c060/a8761471fe7f4c4db4f627dc2563fced/FLAGc0e177b97 [2024-11-23 22:51:24,186 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/bin/uautomizer-verify-LYvppIcaGC/data/ee022c060/a8761471fe7f4c4db4f627dc2563fced [2024-11-23 22:51:24,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:51:24,192 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:51:24,196 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:51:24,197 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:51:24,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:51:24,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:51:24" (1/1) ... [2024-11-23 22:51:24,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f226f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:24, skipping insertion in model container [2024-11-23 22:51:24,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:51:24" (1/1) ... [2024-11-23 22:51:24,243 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:51:24,462 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-10.i[915,928] [2024-11-23 22:51:24,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:51:24,597 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:51:24,614 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-10.i[915,928] [2024-11-23 22:51:24,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:51:24,710 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:51:24,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:24 WrapperNode [2024-11-23 22:51:24,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:51:24,713 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:51:24,713 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:51:24,713 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:51:24,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:24" (1/1) ... [2024-11-23 22:51:24,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:24" (1/1) ... [2024-11-23 22:51:24,790 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 170 [2024-11-23 22:51:24,791 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:51:24,792 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:51:24,792 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:51:24,793 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:51:24,805 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:24" (1/1) ... [2024-11-23 22:51:24,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:24" (1/1) ... [2024-11-23 22:51:24,809 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:24" (1/1) ... [2024-11-23 22:51:24,843 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]. [2024-11-23 22:51:24,843 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:24" (1/1) ... [2024-11-23 22:51:24,843 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:24" (1/1) ... [2024-11-23 22:51:24,862 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:24" (1/1) ... [2024-11-23 22:51:24,863 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:24" (1/1) ... [2024-11-23 22:51:24,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:24" (1/1) ... [2024-11-23 22:51:24,872 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:24" (1/1) ... [2024-11-23 22:51:24,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:24" (1/1) ... [2024-11-23 22:51:24,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:51:24,880 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:51:24,881 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:51:24,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:51:24,882 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:24" (1/1) ... [2024-11-23 22:51:24,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:51:24,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:51:24,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:51:24,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1a65962-aa2c-4971-bc91-93caa73fa365/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:51:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:51:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 22:51:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 22:51:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:51:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:51:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:51:25,079 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:51:25,082 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:51:25,668 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-23 22:51:25,668 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:51:25,681 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:51:25,682 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-23 22:51:25,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:51:25 BoogieIcfgContainer [2024-11-23 22:51:25,683 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:51:25,686 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:51:25,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:51:25,693 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:51:25,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:51:24" (1/3) ... [2024-11-23 22:51:25,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aaae086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:51:25, skipping insertion in model container [2024-11-23 22:51:25,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:51:24" (2/3) ... [2024-11-23 22:51:25,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aaae086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:51:25, skipping insertion in model container [2024-11-23 22:51:25,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:51:25" (3/3) ... [2024-11-23 22:51:25,698 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-10.i [2024-11-23 22:51:25,720 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:51:25,723 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_50-1loop_file-10.i that has 2 procedures, 75 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 22:51:25,832 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:51:25,850 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@242126c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:51:25,851 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:51:25,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 55 states have internal predecessors, (75), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-23 22:51:25,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 22:51:25,869 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:25,870 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:25,871 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:25,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:25,877 INFO L85 PathProgramCache]: Analyzing trace with hash -824832451, now seen corresponding path program 1 times [2024-11-23 22:51:25,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:25,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557572315] [2024-11-23 22:51:25,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:25,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:27,227 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:51:27,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:27,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557572315] [2024-11-23 22:51:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557572315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:27,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:27,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:51:27,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816244221] [2024-11-23 22:51:27,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:27,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:51:27,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:27,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:51:27,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:51:27,265 INFO L87 Difference]: Start difference. First operand has 75 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 55 states have internal predecessors, (75), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:51:27,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:27,634 INFO L93 Difference]: Finished difference Result 225 states and 370 transitions. [2024-11-23 22:51:27,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:51:27,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 123 [2024-11-23 22:51:27,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:27,648 INFO L225 Difference]: With dead ends: 225 [2024-11-23 22:51:27,648 INFO L226 Difference]: Without dead ends: 141 [2024-11-23 22:51:27,653 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:51:27,657 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 86 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:27,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 404 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:51:27,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-23 22:51:27,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 106. [2024-11-23 22:51:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 67 states have internal predecessors, (84), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-23 22:51:27,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 156 transitions. [2024-11-23 22:51:27,754 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 156 transitions. Word has length 123 [2024-11-23 22:51:27,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:27,755 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 156 transitions. [2024-11-23 22:51:27,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:51:27,756 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 156 transitions. [2024-11-23 22:51:27,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:51:27,762 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:27,762 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:27,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 22:51:27,763 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:27,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:27,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1049623097, now seen corresponding path program 1 times [2024-11-23 22:51:27,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:27,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854596174] [2024-11-23 22:51:27,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:27,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:51:55,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:55,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854596174] [2024-11-23 22:51:55,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854596174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:55,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:55,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:51:55,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295074395] [2024-11-23 22:51:55,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:55,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:51:55,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:55,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:51:55,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:51:55,168 INFO L87 Difference]: Start difference. First operand 106 states and 156 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:51:57,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:57,310 INFO L93 Difference]: Finished difference Result 312 states and 447 transitions. [2024-11-23 22:51:57,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:51:57,311 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 124 [2024-11-23 22:51:57,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:57,315 INFO L225 Difference]: With dead ends: 312 [2024-11-23 22:51:57,315 INFO L226 Difference]: Without dead ends: 244 [2024-11-23 22:51:57,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2024-11-23 22:51:57,317 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 422 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:57,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 562 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 22:51:57,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-23 22:51:57,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 125. [2024-11-23 22:51:57,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 86 states have (on average 1.302325581395349) internal successors, (112), 86 states have internal predecessors, (112), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-23 22:51:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 184 transitions. [2024-11-23 22:51:57,348 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 184 transitions. Word has length 124 [2024-11-23 22:51:57,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:57,349 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 184 transitions. [2024-11-23 22:51:57,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:51:57,349 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 184 transitions. [2024-11-23 22:51:57,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:51:57,352 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:57,352 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:51:57,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:51:57,353 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:57,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:57,354 INFO L85 PathProgramCache]: Analyzing trace with hash -369564727, now seen corresponding path program 1 times [2024-11-23 22:51:57,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:57,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427906993] [2024-11-23 22:51:57,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:57,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:53:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:53:01,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:53:01,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427906993] [2024-11-23 22:53:01,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427906993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:53:01,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:53:01,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:53:01,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937975619] [2024-11-23 22:53:01,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:53:01,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:53:01,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:53:01,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:53:01,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:53:01,648 INFO L87 Difference]: Start difference. First operand 125 states and 184 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:53:03,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:53:03,079 INFO L93 Difference]: Finished difference Result 368 states and 529 transitions. [2024-11-23 22:53:03,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:53:03,080 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 124 [2024-11-23 22:53:03,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:53:03,083 INFO L225 Difference]: With dead ends: 368 [2024-11-23 22:53:03,083 INFO L226 Difference]: Without dead ends: 300 [2024-11-23 22:53:03,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:53:03,085 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 316 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:53:03,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 510 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:53:03,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-23 22:53:03,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 206. [2024-11-23 22:53:03,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 147 states have (on average 1.3129251700680271) internal successors, (193), 147 states have internal predecessors, (193), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 22:53:03,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 301 transitions. [2024-11-23 22:53:03,123 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 301 transitions. Word has length 124 [2024-11-23 22:53:03,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:53:03,123 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 301 transitions. [2024-11-23 22:53:03,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:53:03,124 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 301 transitions. [2024-11-23 22:53:03,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:53:03,125 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:53:03,126 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:53:03,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:53:03,126 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:53:03,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:53:03,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2097218759, now seen corresponding path program 1 times [2024-11-23 22:53:03,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:53:03,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367615648] [2024-11-23 22:53:03,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:53:03,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:53:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:53:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:53:57,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:53:57,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367615648] [2024-11-23 22:53:57,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367615648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:53:57,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:53:57,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 22:53:57,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597178359] [2024-11-23 22:53:57,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:53:57,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 22:53:57,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:53:57,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 22:53:57,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:53:57,968 INFO L87 Difference]: Start difference. First operand 206 states and 301 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:54:00,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:54:00,225 INFO L93 Difference]: Finished difference Result 403 states and 570 transitions. [2024-11-23 22:54:00,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:54:00,226 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 124 [2024-11-23 22:54:00,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:54:00,229 INFO L225 Difference]: With dead ends: 403 [2024-11-23 22:54:00,229 INFO L226 Difference]: Without dead ends: 335 [2024-11-23 22:54:00,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2024-11-23 22:54:00,232 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 499 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:54:00,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 508 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 22:54:00,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-23 22:54:00,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 211. [2024-11-23 22:54:00,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 151 states have (on average 1.304635761589404) internal successors, (197), 151 states have internal predecessors, (197), 54 states have call successors, (54), 5 states have call predecessors, (54), 5 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 22:54:00,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 305 transitions. [2024-11-23 22:54:00,287 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 305 transitions. Word has length 124 [2024-11-23 22:54:00,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:54:00,289 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 305 transitions. [2024-11-23 22:54:00,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:54:00,289 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 305 transitions. [2024-11-23 22:54:00,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:54:00,294 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:54:00,294 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:00,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:54:00,295 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:54:00,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:00,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1390633081, now seen corresponding path program 1 times [2024-11-23 22:54:00,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:00,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061240255] [2024-11-23 22:54:00,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:54:00,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:18,696 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:54:18,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:18,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061240255] [2024-11-23 22:54:18,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061240255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:54:18,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:54:18,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 22:54:18,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829058812] [2024-11-23 22:54:18,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:54:18,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 22:54:18,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:18,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 22:54:18,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:54:18,698 INFO L87 Difference]: Start difference. First operand 211 states and 305 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:54:20,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:54:20,447 INFO L93 Difference]: Finished difference Result 443 states and 629 transitions. [2024-11-23 22:54:20,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:54:20,448 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 124 [2024-11-23 22:54:20,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:54:20,451 INFO L225 Difference]: With dead ends: 443 [2024-11-23 22:54:20,451 INFO L226 Difference]: Without dead ends: 289 [2024-11-23 22:54:20,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=119, Invalid=223, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:54:20,455 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 333 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:54:20,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 621 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:54:20,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-23 22:54:20,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 217. [2024-11-23 22:54:20,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 156 states have (on average 1.294871794871795) internal successors, (202), 156 states have internal predecessors, (202), 54 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 22:54:20,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 310 transitions. [2024-11-23 22:54:20,490 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 310 transitions. Word has length 124 [2024-11-23 22:54:20,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:54:20,491 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 310 transitions. [2024-11-23 22:54:20,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:54:20,491 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 310 transitions. [2024-11-23 22:54:20,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:54:20,493 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:54:20,493 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:20,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 22:54:20,493 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:54:20,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:20,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1251199493, now seen corresponding path program 1 times [2024-11-23 22:54:20,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:20,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712051095] [2024-11-23 22:54:20,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:54:20,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:54:26,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:26,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712051095] [2024-11-23 22:54:26,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712051095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:54:26,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:54:26,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 22:54:26,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032350019] [2024-11-23 22:54:26,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:54:26,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:54:26,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:26,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:54:26,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:54:26,961 INFO L87 Difference]: Start difference. First operand 217 states and 310 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:54:28,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:54:28,543 INFO L93 Difference]: Finished difference Result 428 states and 605 transitions. [2024-11-23 22:54:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:54:28,543 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 124 [2024-11-23 22:54:28,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:54:28,546 INFO L225 Difference]: With dead ends: 428 [2024-11-23 22:54:28,546 INFO L226 Difference]: Without dead ends: 360 [2024-11-23 22:54:28,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2024-11-23 22:54:28,548 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 503 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:54:28,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 566 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:54:28,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-23 22:54:28,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 230. [2024-11-23 22:54:28,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 169 states have (on average 1.3136094674556213) internal successors, (222), 169 states have internal predecessors, (222), 54 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 22:54:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 330 transitions. [2024-11-23 22:54:28,568 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 330 transitions. Word has length 124 [2024-11-23 22:54:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:54:28,569 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 330 transitions. [2024-11-23 22:54:28,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:54:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 330 transitions. [2024-11-23 22:54:28,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:54:28,571 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:54:28,571 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:28,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:54:28,571 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:54:28,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:28,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1931257863, now seen corresponding path program 1 times [2024-11-23 22:54:28,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:28,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131311240] [2024-11-23 22:54:28,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:54:28,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:49,573 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:54:49,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:49,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131311240] [2024-11-23 22:54:49,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131311240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:54:49,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:54:49,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-23 22:54:49,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714727930] [2024-11-23 22:54:49,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:54:49,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 22:54:49,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:49,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 22:54:49,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-11-23 22:54:49,575 INFO L87 Difference]: Start difference. First operand 230 states and 330 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-23 22:54:52,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:54:52,735 INFO L93 Difference]: Finished difference Result 561 states and 790 transitions. [2024-11-23 22:54:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 22:54:52,735 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 124 [2024-11-23 22:54:52,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:54:52,738 INFO L225 Difference]: With dead ends: 561 [2024-11-23 22:54:52,739 INFO L226 Difference]: Without dead ends: 493 [2024-11-23 22:54:52,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=312, Invalid=878, Unknown=0, NotChecked=0, Total=1190 [2024-11-23 22:54:52,740 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 633 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:54:52,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 696 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 22:54:52,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2024-11-23 22:54:52,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 330. [2024-11-23 22:54:52,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 245 states have (on average 1.3020408163265307) internal successors, (319), 245 states have internal predecessors, (319), 72 states have call successors, (72), 12 states have call predecessors, (72), 12 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-23 22:54:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 463 transitions. [2024-11-23 22:54:52,773 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 463 transitions. Word has length 124 [2024-11-23 22:54:52,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:54:52,774 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 463 transitions. [2024-11-23 22:54:52,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-23 22:54:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 463 transitions. [2024-11-23 22:54:52,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:54:52,776 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:54:52,776 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:52,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:54:52,776 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:54:52,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:52,777 INFO L85 PathProgramCache]: Analyzing trace with hash 103074053, now seen corresponding path program 1 times [2024-11-23 22:54:52,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:52,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010075098] [2024-11-23 22:54:52,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:54:52,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:55:07,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:07,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010075098] [2024-11-23 22:55:07,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010075098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:55:07,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:55:07,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 22:55:07,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933927839] [2024-11-23 22:55:07,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:55:07,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:55:07,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:07,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:55:07,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:55:07,654 INFO L87 Difference]: Start difference. First operand 330 states and 463 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:55:08,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:55:08,907 INFO L93 Difference]: Finished difference Result 438 states and 614 transitions. [2024-11-23 22:55:08,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:55:08,908 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 124 [2024-11-23 22:55:08,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:55:08,910 INFO L225 Difference]: With dead ends: 438 [2024-11-23 22:55:08,910 INFO L226 Difference]: Without dead ends: 370 [2024-11-23 22:55:08,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2024-11-23 22:55:08,912 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 386 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:55:08,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 499 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 22:55:08,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-23 22:55:08,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 286. [2024-11-23 22:55:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 201 states have (on average 1.2587064676616915) internal successors, (253), 202 states have internal predecessors, (253), 72 states have call successors, (72), 12 states have call predecessors, (72), 12 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-23 22:55:08,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 397 transitions. [2024-11-23 22:55:08,944 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 397 transitions. Word has length 124 [2024-11-23 22:55:08,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:55:08,944 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 397 transitions. [2024-11-23 22:55:08,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:55:08,945 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 397 transitions. [2024-11-23 22:55:08,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:55:08,946 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:55:08,946 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:55:08,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 22:55:08,946 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:55:08,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:08,947 INFO L85 PathProgramCache]: Analyzing trace with hash 910189509, now seen corresponding path program 1 times [2024-11-23 22:55:08,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:08,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665549067] [2024-11-23 22:55:08,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:08,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:55:21,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:21,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665549067] [2024-11-23 22:55:21,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665549067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:55:21,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:55:21,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:55:21,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125391549] [2024-11-23 22:55:21,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:55:21,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:55:21,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:21,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:55:21,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:55:21,573 INFO L87 Difference]: Start difference. First operand 286 states and 397 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:55:22,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:55:22,746 INFO L93 Difference]: Finished difference Result 550 states and 756 transitions. [2024-11-23 22:55:22,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:55:22,747 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 124 [2024-11-23 22:55:22,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:55:22,750 INFO L225 Difference]: With dead ends: 550 [2024-11-23 22:55:22,751 INFO L226 Difference]: Without dead ends: 388 [2024-11-23 22:55:22,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2024-11-23 22:55:22,752 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 326 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:55:22,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 535 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 22:55:22,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-23 22:55:22,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 294. [2024-11-23 22:55:22,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 209 states have (on average 1.2583732057416268) internal successors, (263), 210 states have internal predecessors, (263), 72 states have call successors, (72), 12 states have call predecessors, (72), 12 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-23 22:55:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 407 transitions. [2024-11-23 22:55:22,787 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 407 transitions. Word has length 124 [2024-11-23 22:55:22,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:55:22,787 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 407 transitions. [2024-11-23 22:55:22,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:55:22,787 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 407 transitions. [2024-11-23 22:55:22,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-23 22:55:22,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:55:22,791 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:55:22,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 22:55:22,792 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:55:22,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:22,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1168354947, now seen corresponding path program 1 times [2024-11-23 22:55:22,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:22,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980748142] [2024-11-23 22:55:22,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:22,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:35,987 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:55:35,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:35,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980748142] [2024-11-23 22:55:35,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980748142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:55:35,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:55:35,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:55:35,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211579382] [2024-11-23 22:55:35,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:55:35,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:55:35,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:35,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:55:35,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:55:35,989 INFO L87 Difference]: Start difference. First operand 294 states and 407 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:55:36,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:55:36,624 INFO L93 Difference]: Finished difference Result 560 states and 768 transitions. [2024-11-23 22:55:36,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:55:36,624 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 124 [2024-11-23 22:55:36,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:55:36,627 INFO L225 Difference]: With dead ends: 560 [2024-11-23 22:55:36,627 INFO L226 Difference]: Without dead ends: 390 [2024-11-23 22:55:36,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:55:36,628 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 240 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:55:36,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 512 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 22:55:36,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-23 22:55:36,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 208. [2024-11-23 22:55:36,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 145 states have (on average 1.2620689655172415) internal successors, (183), 146 states have internal predecessors, (183), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 22:55:36,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 291 transitions. [2024-11-23 22:55:36,652 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 291 transitions. Word has length 124 [2024-11-23 22:55:36,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:55:36,653 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 291 transitions. [2024-11-23 22:55:36,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:55:36,653 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 291 transitions. [2024-11-23 22:55:36,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 22:55:36,654 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:55:36,654 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:55:36,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 22:55:36,655 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:55:36,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:36,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1928613390, now seen corresponding path program 1 times [2024-11-23 22:55:36,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:36,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786059303] [2024-11-23 22:55:36,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:36,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:55:48,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:48,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786059303] [2024-11-23 22:55:48,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786059303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:55:48,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:55:48,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 22:55:48,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593902518] [2024-11-23 22:55:48,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:55:48,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 22:55:48,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:49,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 22:55:49,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:55:49,000 INFO L87 Difference]: Start difference. First operand 208 states and 291 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:55:50,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:55:50,090 INFO L93 Difference]: Finished difference Result 557 states and 763 transitions. [2024-11-23 22:55:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:55:50,091 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 125 [2024-11-23 22:55:50,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:55:50,093 INFO L225 Difference]: With dead ends: 557 [2024-11-23 22:55:50,093 INFO L226 Difference]: Without dead ends: 489 [2024-11-23 22:55:50,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:55:50,095 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 405 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:55:50,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 544 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 22:55:50,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2024-11-23 22:55:50,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 227. [2024-11-23 22:55:50,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 164 states have (on average 1.2926829268292683) internal successors, (212), 164 states have internal predecessors, (212), 54 states have call successors, (54), 8 states have call predecessors, (54), 8 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-23 22:55:50,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 320 transitions. [2024-11-23 22:55:50,118 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 320 transitions. Word has length 125 [2024-11-23 22:55:50,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:55:50,118 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 320 transitions. [2024-11-23 22:55:50,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:55:50,119 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 320 transitions. [2024-11-23 22:55:50,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 22:55:50,120 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:55:50,120 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:55:50,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 22:55:50,120 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:55:50,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:50,121 INFO L85 PathProgramCache]: Analyzing trace with hash -153606028, now seen corresponding path program 1 times [2024-11-23 22:55:50,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:50,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639987923] [2024-11-23 22:55:50,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:50,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:55:50,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:50,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639987923] [2024-11-23 22:55:50,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639987923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:55:50,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:55:50,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:55:50,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45080225] [2024-11-23 22:55:50,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:55:50,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:55:50,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:50,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:55:50,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:55:50,280 INFO L87 Difference]: Start difference. First operand 227 states and 320 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:55:50,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:55:50,351 INFO L93 Difference]: Finished difference Result 350 states and 487 transitions. [2024-11-23 22:55:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:55:50,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 125 [2024-11-23 22:55:50,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:55:50,353 INFO L225 Difference]: With dead ends: 350 [2024-11-23 22:55:50,354 INFO L226 Difference]: Without dead ends: 282 [2024-11-23 22:55:50,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:55:50,355 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 50 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:55:50,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 227 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:55:50,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-23 22:55:50,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 277. [2024-11-23 22:55:50,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 202 states have (on average 1.2673267326732673) internal successors, (256), 203 states have internal predecessors, (256), 62 states have call successors, (62), 12 states have call predecessors, (62), 12 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-23 22:55:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 380 transitions. [2024-11-23 22:55:50,378 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 380 transitions. Word has length 125 [2024-11-23 22:55:50,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:55:50,379 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 380 transitions. [2024-11-23 22:55:50,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:55:50,379 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 380 transitions. [2024-11-23 22:55:50,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 22:55:50,381 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:55:50,381 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:55:50,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 22:55:50,381 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:55:50,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:50,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1973326896, now seen corresponding path program 1 times [2024-11-23 22:55:50,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:50,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235910167] [2024-11-23 22:55:50,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:50,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:56:42,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:42,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235910167] [2024-11-23 22:56:42,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235910167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:42,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:56:42,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 22:56:42,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104750700] [2024-11-23 22:56:42,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:42,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 22:56:42,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:42,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 22:56:42,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:56:42,901 INFO L87 Difference]: Start difference. First operand 277 states and 380 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:56:45,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:45,745 INFO L93 Difference]: Finished difference Result 640 states and 874 transitions. [2024-11-23 22:56:45,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:56:45,745 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 125 [2024-11-23 22:56:45,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:45,748 INFO L225 Difference]: With dead ends: 640 [2024-11-23 22:56:45,748 INFO L226 Difference]: Without dead ends: 538 [2024-11-23 22:56:45,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2024-11-23 22:56:45,749 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 513 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:45,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 624 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 22:56:45,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-23 22:56:45,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 375. [2024-11-23 22:56:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 278 states have (on average 1.2733812949640289) internal successors, (354), 279 states have internal predecessors, (354), 80 states have call successors, (80), 16 states have call predecessors, (80), 16 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-23 22:56:45,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 514 transitions. [2024-11-23 22:56:45,785 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 514 transitions. Word has length 125 [2024-11-23 22:56:45,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:45,786 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 514 transitions. [2024-11-23 22:56:45,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:56:45,786 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 514 transitions. [2024-11-23 22:56:45,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 22:56:45,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:45,788 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:45,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 22:56:45,788 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:45,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:45,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1134203634, now seen corresponding path program 1 times [2024-11-23 22:56:45,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:45,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779794089] [2024-11-23 22:56:45,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:45,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:57:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:57:50,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:57:50,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779794089] [2024-11-23 22:57:50,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779794089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:57:50,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:57:50,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-23 22:57:50,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663802243] [2024-11-23 22:57:50,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:57:50,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 22:57:50,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:57:50,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 22:57:50,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:57:50,186 INFO L87 Difference]: Start difference. First operand 375 states and 514 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-23 22:57:56,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:57:56,141 INFO L93 Difference]: Finished difference Result 956 states and 1296 transitions. [2024-11-23 22:57:56,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-23 22:57:56,141 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 125 [2024-11-23 22:57:56,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:57:56,144 INFO L225 Difference]: With dead ends: 956 [2024-11-23 22:57:56,145 INFO L226 Difference]: Without dead ends: 656 [2024-11-23 22:57:56,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=303, Invalid=1029, Unknown=0, NotChecked=0, Total=1332 [2024-11-23 22:57:56,146 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 706 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:57:56,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 790 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-23 22:57:56,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2024-11-23 22:57:56,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 390. [2024-11-23 22:57:56,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 292 states have (on average 1.2773972602739727) internal successors, (373), 293 states have internal predecessors, (373), 80 states have call successors, (80), 17 states have call predecessors, (80), 17 states have return successors, (80), 79 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-23 22:57:56,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 533 transitions. [2024-11-23 22:57:56,187 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 533 transitions. Word has length 125 [2024-11-23 22:57:56,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:57:56,187 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 533 transitions. [2024-11-23 22:57:56,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 4 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-23 22:57:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 533 transitions. [2024-11-23 22:57:56,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 22:57:56,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:57:56,189 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:57:56,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 22:57:56,189 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:57:56,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:57:56,189 INFO L85 PathProgramCache]: Analyzing trace with hash 547397620, now seen corresponding path program 1 times [2024-11-23 22:57:56,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:57:56,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795529301] [2024-11-23 22:57:56,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:57:56,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:57:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:57:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:57:56,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:57:56,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795529301] [2024-11-23 22:57:56,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795529301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:57:56,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:57:56,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:57:56,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014107510] [2024-11-23 22:57:56,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:57:56,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:57:56,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:57:56,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:57:56,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:57:56,341 INFO L87 Difference]: Start difference. First operand 390 states and 533 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:57:56,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:57:56,458 INFO L93 Difference]: Finished difference Result 860 states and 1169 transitions. [2024-11-23 22:57:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:57:56,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 125 [2024-11-23 22:57:56,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:57:56,461 INFO L225 Difference]: With dead ends: 860 [2024-11-23 22:57:56,462 INFO L226 Difference]: Without dead ends: 549 [2024-11-23 22:57:56,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:57:56,463 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 40 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:57:56,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 356 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:57:56,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-23 22:57:56,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 501. [2024-11-23 22:57:56,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 387 states have (on average 1.2635658914728682) internal successors, (489), 391 states have internal predecessors, (489), 92 states have call successors, (92), 21 states have call predecessors, (92), 21 states have return successors, (92), 88 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-23 22:57:56,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 673 transitions. [2024-11-23 22:57:56,510 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 673 transitions. Word has length 125 [2024-11-23 22:57:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:57:56,510 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 673 transitions. [2024-11-23 22:57:56,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:57:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 673 transitions. [2024-11-23 22:57:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 22:57:56,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:57:56,512 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:57:56,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 22:57:56,512 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:57:56,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:57:56,513 INFO L85 PathProgramCache]: Analyzing trace with hash 384978994, now seen corresponding path program 1 times [2024-11-23 22:57:56,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:57:56,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432336290] [2024-11-23 22:57:56,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:57:56,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:57:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:58:11,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:11,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432336290] [2024-11-23 22:58:11,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432336290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:11,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:11,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:58:11,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255179198] [2024-11-23 22:58:11,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:11,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:58:11,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:11,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:58:11,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:58:11,112 INFO L87 Difference]: Start difference. First operand 501 states and 673 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:58:12,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:12,063 INFO L93 Difference]: Finished difference Result 1196 states and 1593 transitions. [2024-11-23 22:58:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:58:12,063 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 125 [2024-11-23 22:58:12,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:12,067 INFO L225 Difference]: With dead ends: 1196 [2024-11-23 22:58:12,067 INFO L226 Difference]: Without dead ends: 775 [2024-11-23 22:58:12,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:58:12,069 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 186 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:12,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 648 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 22:58:12,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2024-11-23 22:58:12,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 499. [2024-11-23 22:58:12,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 385 states have (on average 1.2623376623376623) internal successors, (486), 389 states have internal predecessors, (486), 92 states have call successors, (92), 21 states have call predecessors, (92), 21 states have return successors, (92), 88 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-23 22:58:12,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 670 transitions. [2024-11-23 22:58:12,118 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 670 transitions. Word has length 125 [2024-11-23 22:58:12,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:12,119 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 670 transitions. [2024-11-23 22:58:12,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:58:12,119 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 670 transitions. [2024-11-23 22:58:12,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 22:58:12,120 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:12,121 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:12,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 22:58:12,121 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:12,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:12,122 INFO L85 PathProgramCache]: Analyzing trace with hash 677410164, now seen corresponding path program 1 times [2024-11-23 22:58:12,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:12,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683908238] [2024-11-23 22:58:12,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:12,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:58:25,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:25,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683908238] [2024-11-23 22:58:25,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683908238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:25,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:25,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:58:25,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233174385] [2024-11-23 22:58:25,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:25,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:58:25,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:25,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:58:25,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:58:25,134 INFO L87 Difference]: Start difference. First operand 499 states and 670 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:58:26,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:26,381 INFO L93 Difference]: Finished difference Result 1103 states and 1459 transitions. [2024-11-23 22:58:26,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 22:58:26,382 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 125 [2024-11-23 22:58:26,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:26,384 INFO L225 Difference]: With dead ends: 1103 [2024-11-23 22:58:26,384 INFO L226 Difference]: Without dead ends: 943 [2024-11-23 22:58:26,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2024-11-23 22:58:26,386 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 345 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:26,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 729 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 22:58:26,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-11-23 22:58:26,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 512. [2024-11-23 22:58:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 398 states have (on average 1.271356783919598) internal successors, (506), 402 states have internal predecessors, (506), 92 states have call successors, (92), 21 states have call predecessors, (92), 21 states have return successors, (92), 88 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-23 22:58:26,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 690 transitions. [2024-11-23 22:58:26,440 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 690 transitions. Word has length 125 [2024-11-23 22:58:26,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:26,440 INFO L471 AbstractCegarLoop]: Abstraction has 512 states and 690 transitions. [2024-11-23 22:58:26,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:58:26,441 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 690 transitions. [2024-11-23 22:58:26,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 22:58:26,441 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:26,442 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:26,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 22:58:26,442 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:26,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:26,442 INFO L85 PathProgramCache]: Analyzing trace with hash 284383154, now seen corresponding path program 1 times [2024-11-23 22:58:26,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:26,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657409396] [2024-11-23 22:58:26,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:26,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:58:40,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:40,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657409396] [2024-11-23 22:58:40,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657409396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:40,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:40,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 22:58:40,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131456618] [2024-11-23 22:58:40,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:40,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 22:58:40,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:40,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 22:58:40,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:58:40,862 INFO L87 Difference]: Start difference. First operand 512 states and 690 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:58:43,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:43,939 INFO L93 Difference]: Finished difference Result 895 states and 1196 transitions. [2024-11-23 22:58:43,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 22:58:43,939 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 125 [2024-11-23 22:58:43,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:43,942 INFO L225 Difference]: With dead ends: 895 [2024-11-23 22:58:43,942 INFO L226 Difference]: Without dead ends: 735 [2024-11-23 22:58:43,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=201, Invalid=669, Unknown=0, NotChecked=0, Total=870 [2024-11-23 22:58:43,944 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 420 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:43,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 682 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 22:58:43,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2024-11-23 22:58:43,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 515. [2024-11-23 22:58:43,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 401 states have (on average 1.2743142144638404) internal successors, (511), 405 states have internal predecessors, (511), 92 states have call successors, (92), 21 states have call predecessors, (92), 21 states have return successors, (92), 88 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-23 22:58:43,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 695 transitions. [2024-11-23 22:58:43,996 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 695 transitions. Word has length 125 [2024-11-23 22:58:43,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:43,997 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 695 transitions. [2024-11-23 22:58:43,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:58:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 695 transitions. [2024-11-23 22:58:43,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 22:58:43,998 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:43,998 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:43,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 22:58:43,998 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:43,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:43,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2059390516, now seen corresponding path program 1 times [2024-11-23 22:58:43,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:43,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636722372] [2024-11-23 22:58:43,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:43,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:58:55,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:55,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636722372] [2024-11-23 22:58:55,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636722372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:55,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:55,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:58:55,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952737812] [2024-11-23 22:58:55,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:55,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:58:55,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:55,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:58:55,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:58:55,148 INFO L87 Difference]: Start difference. First operand 515 states and 695 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:58:56,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:56,129 INFO L93 Difference]: Finished difference Result 921 states and 1230 transitions. [2024-11-23 22:58:56,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:58:56,129 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 125 [2024-11-23 22:58:56,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:56,131 INFO L225 Difference]: With dead ends: 921 [2024-11-23 22:58:56,131 INFO L226 Difference]: Without dead ends: 761 [2024-11-23 22:58:56,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:58:56,132 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 209 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:56,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 488 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 22:58:56,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2024-11-23 22:58:56,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 515. [2024-11-23 22:58:56,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 401 states have (on average 1.2743142144638404) internal successors, (511), 405 states have internal predecessors, (511), 92 states have call successors, (92), 21 states have call predecessors, (92), 21 states have return successors, (92), 88 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-23 22:58:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 695 transitions. [2024-11-23 22:58:56,185 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 695 transitions. Word has length 125 [2024-11-23 22:58:56,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:56,185 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 695 transitions. [2024-11-23 22:58:56,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 22:58:56,186 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 695 transitions. [2024-11-23 22:58:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 22:58:56,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:56,187 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:56,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 22:58:56,187 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:56,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:56,188 INFO L85 PathProgramCache]: Analyzing trace with hash -554740108, now seen corresponding path program 1 times [2024-11-23 22:58:56,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:56,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031172616] [2024-11-23 22:58:56,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:56,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:59:32,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:32,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031172616] [2024-11-23 22:59:32,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031172616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:32,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:32,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 22:59:32,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875167761] [2024-11-23 22:59:32,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:32,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 22:59:32,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:32,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 22:59:32,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:59:32,066 INFO L87 Difference]: Start difference. First operand 515 states and 695 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:59:36,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:36,757 INFO L93 Difference]: Finished difference Result 851 states and 1149 transitions. [2024-11-23 22:59:36,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 22:59:36,757 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 125 [2024-11-23 22:59:36,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:36,760 INFO L225 Difference]: With dead ends: 851 [2024-11-23 22:59:36,760 INFO L226 Difference]: Without dead ends: 691 [2024-11-23 22:59:36,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=244, Invalid=748, Unknown=0, NotChecked=0, Total=992 [2024-11-23 22:59:36,761 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 525 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:36,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 630 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 22:59:36,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-11-23 22:59:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 497. [2024-11-23 22:59:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 388 states have (on average 1.2809278350515463) internal successors, (497), 391 states have internal predecessors, (497), 88 states have call successors, (88), 20 states have call predecessors, (88), 20 states have return successors, (88), 85 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-23 22:59:36,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 673 transitions. [2024-11-23 22:59:36,812 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 673 transitions. Word has length 125 [2024-11-23 22:59:36,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:36,812 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 673 transitions. [2024-11-23 22:59:36,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:59:36,812 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 673 transitions. [2024-11-23 22:59:36,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 22:59:36,813 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:36,813 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:36,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 22:59:36,814 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:36,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:36,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1220267254, now seen corresponding path program 1 times [2024-11-23 22:59:36,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:36,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787910222] [2024-11-23 22:59:36,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:36,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:59:38,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:38,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787910222] [2024-11-23 22:59:38,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787910222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:38,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:38,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 22:59:38,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47319593] [2024-11-23 22:59:38,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:38,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:59:38,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:38,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:59:38,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:59:38,699 INFO L87 Difference]: Start difference. First operand 497 states and 673 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:59:41,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:41,262 INFO L93 Difference]: Finished difference Result 921 states and 1261 transitions. [2024-11-23 22:59:41,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 22:59:41,263 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 125 [2024-11-23 22:59:41,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:41,266 INFO L225 Difference]: With dead ends: 921 [2024-11-23 22:59:41,266 INFO L226 Difference]: Without dead ends: 761 [2024-11-23 22:59:41,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2024-11-23 22:59:41,268 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 693 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:41,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 572 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 22:59:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2024-11-23 22:59:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 524. [2024-11-23 22:59:41,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 413 states have (on average 1.2929782082324455) internal successors, (534), 416 states have internal predecessors, (534), 88 states have call successors, (88), 22 states have call predecessors, (88), 22 states have return successors, (88), 85 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-23 22:59:41,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 710 transitions. [2024-11-23 22:59:41,315 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 710 transitions. Word has length 125 [2024-11-23 22:59:41,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:41,316 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 710 transitions. [2024-11-23 22:59:41,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 22:59:41,317 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 710 transitions. [2024-11-23 22:59:41,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-23 22:59:41,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:41,318 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:41,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 22:59:41,318 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:41,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:41,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1303964748, now seen corresponding path program 1 times [2024-11-23 22:59:41,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:41,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538293596] [2024-11-23 22:59:41,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:41,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 22:59:57,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:57,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538293596] [2024-11-23 22:59:57,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538293596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:57,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:57,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 22:59:57,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229368057] [2024-11-23 22:59:57,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:57,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:59:57,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:57,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:59:57,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:59:57,922 INFO L87 Difference]: Start difference. First operand 524 states and 710 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:59:59,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:59,799 INFO L93 Difference]: Finished difference Result 974 states and 1308 transitions. [2024-11-23 22:59:59,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:59:59,804 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 125 [2024-11-23 22:59:59,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:59,807 INFO L225 Difference]: With dead ends: 974 [2024-11-23 22:59:59,808 INFO L226 Difference]: Without dead ends: 653 [2024-11-23 22:59:59,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2024-11-23 22:59:59,810 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 296 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:59,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 585 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:59:59,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2024-11-23 22:59:59,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 522. [2024-11-23 22:59:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 411 states have (on average 1.2919708029197081) internal successors, (531), 414 states have internal predecessors, (531), 88 states have call successors, (88), 22 states have call predecessors, (88), 22 states have return successors, (88), 85 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-23 22:59:59,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 707 transitions. [2024-11-23 22:59:59,864 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 707 transitions. Word has length 125 [2024-11-23 22:59:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:59,864 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 707 transitions. [2024-11-23 22:59:59,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 22:59:59,864 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 707 transitions. [2024-11-23 22:59:59,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 22:59:59,865 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:59,866 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:59,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 22:59:59,866 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:59,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:59,866 INFO L85 PathProgramCache]: Analyzing trace with hash 264568196, now seen corresponding path program 1 times [2024-11-23 22:59:59,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:59,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875169371] [2024-11-23 22:59:59,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:59,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:00:16,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875169371] [2024-11-23 23:00:16,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875169371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:16,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:16,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:00:16,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097024483] [2024-11-23 23:00:16,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:16,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:00:16,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:16,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:00:16,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:00:16,876 INFO L87 Difference]: Start difference. First operand 522 states and 707 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:00:18,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:18,865 INFO L93 Difference]: Finished difference Result 893 states and 1199 transitions. [2024-11-23 23:00:18,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 23:00:18,865 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 126 [2024-11-23 23:00:18,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:18,868 INFO L225 Difference]: With dead ends: 893 [2024-11-23 23:00:18,868 INFO L226 Difference]: Without dead ends: 715 [2024-11-23 23:00:18,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2024-11-23 23:00:18,869 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 603 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:18,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 459 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:00:18,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-11-23 23:00:18,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 527. [2024-11-23 23:00:18,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 416 states have (on average 1.2932692307692308) internal successors, (538), 419 states have internal predecessors, (538), 88 states have call successors, (88), 22 states have call predecessors, (88), 22 states have return successors, (88), 85 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-23 23:00:18,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 714 transitions. [2024-11-23 23:00:18,925 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 714 transitions. Word has length 126 [2024-11-23 23:00:18,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:18,925 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 714 transitions. [2024-11-23 23:00:18,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:00:18,926 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 714 transitions. [2024-11-23 23:00:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:00:18,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:18,927 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:00:18,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 23:00:18,927 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:18,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:18,928 INFO L85 PathProgramCache]: Analyzing trace with hash -298984027, now seen corresponding path program 1 times [2024-11-23 23:00:18,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:18,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124960563] [2024-11-23 23:00:18,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:18,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:00:20,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:20,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124960563] [2024-11-23 23:00:20,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124960563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:20,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:20,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:00:20,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384035676] [2024-11-23 23:00:20,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:20,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:00:20,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:20,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:00:20,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:00:20,817 INFO L87 Difference]: Start difference. First operand 527 states and 714 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:00:21,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:21,603 INFO L93 Difference]: Finished difference Result 830 states and 1107 transitions. [2024-11-23 23:00:21,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:00:21,603 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 127 [2024-11-23 23:00:21,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:21,606 INFO L225 Difference]: With dead ends: 830 [2024-11-23 23:00:21,606 INFO L226 Difference]: Without dead ends: 828 [2024-11-23 23:00:21,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:00:21,607 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 147 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:21,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 899 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:00:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2024-11-23 23:00:21,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 617. [2024-11-23 23:00:21,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 493 states have (on average 1.2961460446247464) internal successors, (639), 498 states have internal predecessors, (639), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 93 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-23 23:00:21,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 835 transitions. [2024-11-23 23:00:21,683 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 835 transitions. Word has length 127 [2024-11-23 23:00:21,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:21,683 INFO L471 AbstractCegarLoop]: Abstraction has 617 states and 835 transitions. [2024-11-23 23:00:21,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:00:21,684 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 835 transitions. [2024-11-23 23:00:21,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:00:21,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:21,685 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:00:21,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 23:00:21,686 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:21,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:21,686 INFO L85 PathProgramCache]: Analyzing trace with hash -40818589, now seen corresponding path program 1 times [2024-11-23 23:00:21,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:21,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033776314] [2024-11-23 23:00:21,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:21,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:00:24,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:24,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033776314] [2024-11-23 23:00:24,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033776314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:24,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:24,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 23:00:24,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352872523] [2024-11-23 23:00:24,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:24,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 23:00:24,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:24,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 23:00:24,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:00:24,694 INFO L87 Difference]: Start difference. First operand 617 states and 835 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:00:26,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:26,228 INFO L93 Difference]: Finished difference Result 927 states and 1254 transitions. [2024-11-23 23:00:26,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 23:00:26,229 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 127 [2024-11-23 23:00:26,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:26,231 INFO L225 Difference]: With dead ends: 927 [2024-11-23 23:00:26,231 INFO L226 Difference]: Without dead ends: 925 [2024-11-23 23:00:26,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:00:26,232 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 352 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:26,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 567 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:00:26,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2024-11-23 23:00:26,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 650. [2024-11-23 23:00:26,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 526 states have (on average 1.311787072243346) internal successors, (690), 531 states have internal predecessors, (690), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 93 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-23 23:00:26,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 886 transitions. [2024-11-23 23:00:26,293 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 886 transitions. Word has length 127 [2024-11-23 23:00:26,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:26,293 INFO L471 AbstractCegarLoop]: Abstraction has 650 states and 886 transitions. [2024-11-23 23:00:26,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:00:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 886 transitions. [2024-11-23 23:00:26,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:00:26,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:26,295 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:00:26,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 23:00:26,295 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:26,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:26,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1015578277, now seen corresponding path program 1 times [2024-11-23 23:00:26,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:26,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658719099] [2024-11-23 23:00:26,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:26,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:00:28,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:28,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658719099] [2024-11-23 23:00:28,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658719099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:28,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:28,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 23:00:28,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883563356] [2024-11-23 23:00:28,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:28,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:00:28,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:28,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:00:28,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:00:28,244 INFO L87 Difference]: Start difference. First operand 650 states and 886 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:00:29,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:29,493 INFO L93 Difference]: Finished difference Result 1216 states and 1640 transitions. [2024-11-23 23:00:29,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:00:29,493 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 127 [2024-11-23 23:00:29,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:29,497 INFO L225 Difference]: With dead ends: 1216 [2024-11-23 23:00:29,498 INFO L226 Difference]: Without dead ends: 953 [2024-11-23 23:00:29,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:00:29,499 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 195 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:29,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1004 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:00:29,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2024-11-23 23:00:29,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 827. [2024-11-23 23:00:29,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 672 states have (on average 1.3035714285714286) internal successors, (876), 682 states have internal predecessors, (876), 122 states have call successors, (122), 32 states have call predecessors, (122), 32 states have return successors, (122), 112 states have call predecessors, (122), 122 states have call successors, (122) [2024-11-23 23:00:29,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1120 transitions. [2024-11-23 23:00:29,598 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1120 transitions. Word has length 127 [2024-11-23 23:00:29,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:29,598 INFO L471 AbstractCegarLoop]: Abstraction has 827 states and 1120 transitions. [2024-11-23 23:00:29,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:00:29,599 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1120 transitions. [2024-11-23 23:00:29,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:00:29,600 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:29,600 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:00:29,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 23:00:29,600 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:29,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:29,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1578847705, now seen corresponding path program 1 times [2024-11-23 23:00:29,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:29,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865603851] [2024-11-23 23:00:29,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:29,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:00:31,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:31,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865603851] [2024-11-23 23:00:31,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865603851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:31,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:31,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:00:31,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568615376] [2024-11-23 23:00:31,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:31,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:00:31,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:31,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:00:31,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:00:31,090 INFO L87 Difference]: Start difference. First operand 827 states and 1120 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:00:32,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:32,459 INFO L93 Difference]: Finished difference Result 1126 states and 1485 transitions. [2024-11-23 23:00:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:00:32,460 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 127 [2024-11-23 23:00:32,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:32,462 INFO L225 Difference]: With dead ends: 1126 [2024-11-23 23:00:32,462 INFO L226 Difference]: Without dead ends: 1124 [2024-11-23 23:00:32,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:00:32,463 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 239 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:32,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 743 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:00:32,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2024-11-23 23:00:32,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 848. [2024-11-23 23:00:32,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 693 states have (on average 1.3044733044733046) internal successors, (904), 703 states have internal predecessors, (904), 122 states have call successors, (122), 32 states have call predecessors, (122), 32 states have return successors, (122), 112 states have call predecessors, (122), 122 states have call successors, (122) [2024-11-23 23:00:32,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1148 transitions. [2024-11-23 23:00:32,562 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1148 transitions. Word has length 127 [2024-11-23 23:00:32,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:32,563 INFO L471 AbstractCegarLoop]: Abstraction has 848 states and 1148 transitions. [2024-11-23 23:00:32,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:00:32,563 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1148 transitions. [2024-11-23 23:00:32,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:00:32,564 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:32,564 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:00:32,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 23:00:32,564 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:32,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:32,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1320682267, now seen corresponding path program 1 times [2024-11-23 23:00:32,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:32,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689778703] [2024-11-23 23:00:32,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:32,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:35,976 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:00:35,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:35,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689778703] [2024-11-23 23:00:35,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689778703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:35,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:35,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 23:00:35,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985362254] [2024-11-23 23:00:35,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:35,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 23:00:35,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:35,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 23:00:35,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:00:35,978 INFO L87 Difference]: Start difference. First operand 848 states and 1148 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:00:42,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:42,232 INFO L93 Difference]: Finished difference Result 1631 states and 2170 transitions. [2024-11-23 23:00:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-23 23:00:42,233 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 127 [2024-11-23 23:00:42,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:42,237 INFO L225 Difference]: With dead ends: 1631 [2024-11-23 23:00:42,237 INFO L226 Difference]: Without dead ends: 1629 [2024-11-23 23:00:42,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=310, Invalid=1096, Unknown=0, NotChecked=0, Total=1406 [2024-11-23 23:00:42,238 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 730 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:42,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 853 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 23:00:42,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2024-11-23 23:00:42,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 827. [2024-11-23 23:00:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 686 states have (on average 1.3236151603498543) internal successors, (908), 693 states have internal predecessors, (908), 110 states have call successors, (110), 30 states have call predecessors, (110), 30 states have return successors, (110), 103 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-23 23:00:42,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1128 transitions. [2024-11-23 23:00:42,301 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1128 transitions. Word has length 127 [2024-11-23 23:00:42,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:42,302 INFO L471 AbstractCegarLoop]: Abstraction has 827 states and 1128 transitions. [2024-11-23 23:00:42,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:00:42,302 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1128 transitions. [2024-11-23 23:00:42,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:00:42,303 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:42,303 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:00:42,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 23:00:42,303 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:42,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:42,303 INFO L85 PathProgramCache]: Analyzing trace with hash -264285401, now seen corresponding path program 1 times [2024-11-23 23:00:42,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:42,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498363762] [2024-11-23 23:00:42,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:42,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:00:43,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:43,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498363762] [2024-11-23 23:00:43,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498363762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:43,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:43,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 23:00:43,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883689222] [2024-11-23 23:00:43,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:43,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 23:00:43,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:43,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 23:00:43,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:00:43,817 INFO L87 Difference]: Start difference. First operand 827 states and 1128 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:00:45,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:45,570 INFO L93 Difference]: Finished difference Result 1984 states and 2656 transitions. [2024-11-23 23:00:45,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 23:00:45,571 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 127 [2024-11-23 23:00:45,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:45,577 INFO L225 Difference]: With dead ends: 1984 [2024-11-23 23:00:45,577 INFO L226 Difference]: Without dead ends: 1565 [2024-11-23 23:00:45,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2024-11-23 23:00:45,579 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 377 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:45,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 1145 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 23:00:45,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2024-11-23 23:00:45,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 758. [2024-11-23 23:00:45,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 628 states have (on average 1.3312101910828025) internal successors, (836), 632 states have internal predecessors, (836), 100 states have call successors, (100), 29 states have call predecessors, (100), 29 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:00:45,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1036 transitions. [2024-11-23 23:00:45,662 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1036 transitions. Word has length 127 [2024-11-23 23:00:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:45,663 INFO L471 AbstractCegarLoop]: Abstraction has 758 states and 1036 transitions. [2024-11-23 23:00:45,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:00:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1036 transitions. [2024-11-23 23:00:45,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:00:45,664 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:45,664 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:00:45,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 23:00:45,665 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:45,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:45,665 INFO L85 PathProgramCache]: Analyzing trace with hash -786815911, now seen corresponding path program 1 times [2024-11-23 23:00:45,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:45,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188670916] [2024-11-23 23:00:45,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:45,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:01:40,895 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:01:40,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:01:40,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188670916] [2024-11-23 23:01:40,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188670916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:01:40,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:01:40,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 23:01:40,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397826608] [2024-11-23 23:01:40,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:01:40,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:01:40,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:01:40,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:01:40,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:01:40,897 INFO L87 Difference]: Start difference. First operand 758 states and 1036 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:01:44,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:01:44,011 INFO L93 Difference]: Finished difference Result 1571 states and 2104 transitions. [2024-11-23 23:01:44,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:01:44,012 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 127 [2024-11-23 23:01:44,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:01:44,017 INFO L225 Difference]: With dead ends: 1571 [2024-11-23 23:01:44,017 INFO L226 Difference]: Without dead ends: 1220 [2024-11-23 23:01:44,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:01:44,019 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 469 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:01:44,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 618 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 23:01:44,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2024-11-23 23:01:44,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 741. [2024-11-23 23:01:44,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 611 states have (on average 1.32569558101473) internal successors, (810), 615 states have internal predecessors, (810), 100 states have call successors, (100), 29 states have call predecessors, (100), 29 states have return successors, (100), 96 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 23:01:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1010 transitions. [2024-11-23 23:01:44,140 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1010 transitions. Word has length 127 [2024-11-23 23:01:44,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:01:44,141 INFO L471 AbstractCegarLoop]: Abstraction has 741 states and 1010 transitions. [2024-11-23 23:01:44,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:01:44,141 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1010 transitions. [2024-11-23 23:01:44,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:01:44,142 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:01:44,142 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:01:44,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-23 23:01:44,143 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:01:44,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:01:44,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1729762331, now seen corresponding path program 1 times [2024-11-23 23:01:44,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:01:44,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596859480] [2024-11-23 23:01:44,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:01:44,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:01:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:01:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:01:46,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:01:46,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596859480] [2024-11-23 23:01:46,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596859480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:01:46,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:01:46,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:01:46,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090762485] [2024-11-23 23:01:46,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:01:46,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:01:46,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:01:46,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:01:46,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:01:46,027 INFO L87 Difference]: Start difference. First operand 741 states and 1010 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:01:47,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:01:47,011 INFO L93 Difference]: Finished difference Result 919 states and 1234 transitions. [2024-11-23 23:01:47,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:01:47,012 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 127 [2024-11-23 23:01:47,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:01:47,015 INFO L225 Difference]: With dead ends: 919 [2024-11-23 23:01:47,015 INFO L226 Difference]: Without dead ends: 917 [2024-11-23 23:01:47,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:01:47,016 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 97 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:01:47,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 764 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 23:01:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2024-11-23 23:01:47,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 831. [2024-11-23 23:01:47,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 679 states have (on average 1.3033873343151694) internal successors, (885), 685 states have internal predecessors, (885), 116 states have call successors, (116), 35 states have call predecessors, (116), 35 states have return successors, (116), 110 states have call predecessors, (116), 116 states have call successors, (116) [2024-11-23 23:01:47,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1117 transitions. [2024-11-23 23:01:47,096 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1117 transitions. Word has length 127 [2024-11-23 23:01:47,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:01:47,096 INFO L471 AbstractCegarLoop]: Abstraction has 831 states and 1117 transitions. [2024-11-23 23:01:47,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:01:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1117 transitions. [2024-11-23 23:01:47,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:01:47,098 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:01:47,098 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:01:47,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-23 23:01:47,098 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:01:47,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:01:47,099 INFO L85 PathProgramCache]: Analyzing trace with hash -415200027, now seen corresponding path program 1 times [2024-11-23 23:01:47,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:01:47,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53549900] [2024-11-23 23:01:47,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:01:47,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:01:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:01:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:01:49,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:01:49,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53549900] [2024-11-23 23:01:49,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53549900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:01:49,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:01:49,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 23:01:49,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115013380] [2024-11-23 23:01:49,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:01:49,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 23:01:49,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:01:49,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 23:01:49,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:01:49,329 INFO L87 Difference]: Start difference. First operand 831 states and 1117 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:01:50,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:01:50,415 INFO L93 Difference]: Finished difference Result 1335 states and 1797 transitions. [2024-11-23 23:01:50,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:01:50,415 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 127 [2024-11-23 23:01:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:01:50,418 INFO L225 Difference]: With dead ends: 1335 [2024-11-23 23:01:50,418 INFO L226 Difference]: Without dead ends: 985 [2024-11-23 23:01:50,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:01:50,419 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 144 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:01:50,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 857 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:01:50,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2024-11-23 23:01:50,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 879. [2024-11-23 23:01:50,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 727 states have (on average 1.295735900962861) internal successors, (942), 733 states have internal predecessors, (942), 116 states have call successors, (116), 35 states have call predecessors, (116), 35 states have return successors, (116), 110 states have call predecessors, (116), 116 states have call successors, (116) [2024-11-23 23:01:50,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1174 transitions. [2024-11-23 23:01:50,504 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1174 transitions. Word has length 127 [2024-11-23 23:01:50,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:01:50,505 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1174 transitions. [2024-11-23 23:01:50,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:01:50,505 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1174 transitions. [2024-11-23 23:01:50,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:01:50,506 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:01:50,506 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:01:50,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-23 23:01:50,507 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:01:50,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:01:50,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1285341287, now seen corresponding path program 1 times [2024-11-23 23:01:50,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:01:50,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804262093] [2024-11-23 23:01:50,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:01:50,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:01:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:02:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:02:06,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:02:06,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804262093] [2024-11-23 23:02:06,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804262093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:02:06,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:02:06,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-23 23:02:06,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417376071] [2024-11-23 23:02:06,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:02:06,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 23:02:06,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:02:06,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 23:02:06,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:02:06,730 INFO L87 Difference]: Start difference. First operand 879 states and 1174 transitions. Second operand has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:02:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:02:13,096 INFO L93 Difference]: Finished difference Result 1083 states and 1428 transitions. [2024-11-23 23:02:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 23:02:13,096 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 127 [2024-11-23 23:02:13,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:02:13,100 INFO L225 Difference]: With dead ends: 1083 [2024-11-23 23:02:13,100 INFO L226 Difference]: Without dead ends: 1081 [2024-11-23 23:02:13,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=248, Invalid=1158, Unknown=0, NotChecked=0, Total=1406 [2024-11-23 23:02:13,101 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 368 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:02:13,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 885 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-23 23:02:13,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2024-11-23 23:02:13,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 891. [2024-11-23 23:02:13,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 739 states have (on average 1.297699594046008) internal successors, (959), 745 states have internal predecessors, (959), 116 states have call successors, (116), 35 states have call predecessors, (116), 35 states have return successors, (116), 110 states have call predecessors, (116), 116 states have call successors, (116) [2024-11-23 23:02:13,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1191 transitions. [2024-11-23 23:02:13,231 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1191 transitions. Word has length 127 [2024-11-23 23:02:13,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:02:13,231 INFO L471 AbstractCegarLoop]: Abstraction has 891 states and 1191 transitions. [2024-11-23 23:02:13,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 20 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:02:13,232 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1191 transitions. [2024-11-23 23:02:13,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:02:13,232 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:02:13,232 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:02:13,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-23 23:02:13,233 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:02:13,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:02:13,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1695063705, now seen corresponding path program 1 times [2024-11-23 23:02:13,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:02:13,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003932079] [2024-11-23 23:02:13,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:02:13,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:02:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:02:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:02:20,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:02:20,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003932079] [2024-11-23 23:02:20,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003932079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:02:20,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:02:20,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-23 23:02:20,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628685160] [2024-11-23 23:02:20,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:02:20,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:02:20,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:02:20,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:02:20,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:02:20,253 INFO L87 Difference]: Start difference. First operand 891 states and 1191 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:02:26,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:02:26,184 INFO L93 Difference]: Finished difference Result 1133 states and 1489 transitions. [2024-11-23 23:02:26,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 23:02:26,185 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 127 [2024-11-23 23:02:26,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:02:26,189 INFO L225 Difference]: With dead ends: 1133 [2024-11-23 23:02:26,189 INFO L226 Difference]: Without dead ends: 1131 [2024-11-23 23:02:26,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=313, Invalid=1247, Unknown=0, NotChecked=0, Total=1560 [2024-11-23 23:02:26,190 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 363 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:02:26,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 1209 Invalid, 2473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-23 23:02:26,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2024-11-23 23:02:26,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 894. [2024-11-23 23:02:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 742 states have (on average 1.297843665768194) internal successors, (963), 748 states have internal predecessors, (963), 116 states have call successors, (116), 35 states have call predecessors, (116), 35 states have return successors, (116), 110 states have call predecessors, (116), 116 states have call successors, (116) [2024-11-23 23:02:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1195 transitions. [2024-11-23 23:02:26,274 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1195 transitions. Word has length 127 [2024-11-23 23:02:26,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:02:26,274 INFO L471 AbstractCegarLoop]: Abstraction has 894 states and 1195 transitions. [2024-11-23 23:02:26,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:02:26,275 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1195 transitions. [2024-11-23 23:02:26,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:02:26,275 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:02:26,275 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:02:26,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-23 23:02:26,275 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:02:26,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:02:26,276 INFO L85 PathProgramCache]: Analyzing trace with hash -897980441, now seen corresponding path program 1 times [2024-11-23 23:02:26,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:02:26,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640647886] [2024-11-23 23:02:26,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:02:26,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:02:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:02:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:02:28,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:02:28,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640647886] [2024-11-23 23:02:28,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640647886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:02:28,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:02:28,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:02:28,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302747902] [2024-11-23 23:02:28,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:02:28,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:02:28,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:02:28,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:02:28,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:02:28,897 INFO L87 Difference]: Start difference. First operand 894 states and 1195 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:02:29,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:02:29,745 INFO L93 Difference]: Finished difference Result 1128 states and 1474 transitions. [2024-11-23 23:02:29,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:02:29,746 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 127 [2024-11-23 23:02:29,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:02:29,749 INFO L225 Difference]: With dead ends: 1128 [2024-11-23 23:02:29,749 INFO L226 Difference]: Without dead ends: 1126 [2024-11-23 23:02:29,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:02:29,750 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 104 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:02:29,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 864 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:02:29,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2024-11-23 23:02:29,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 884. [2024-11-23 23:02:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 884 states, 732 states have (on average 1.289617486338798) internal successors, (944), 738 states have internal predecessors, (944), 116 states have call successors, (116), 35 states have call predecessors, (116), 35 states have return successors, (116), 110 states have call predecessors, (116), 116 states have call successors, (116) [2024-11-23 23:02:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1176 transitions. [2024-11-23 23:02:29,856 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1176 transitions. Word has length 127 [2024-11-23 23:02:29,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:02:29,857 INFO L471 AbstractCegarLoop]: Abstraction has 884 states and 1176 transitions. [2024-11-23 23:02:29,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:02:29,857 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1176 transitions. [2024-11-23 23:02:29,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:02:29,858 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:02:29,858 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:02:29,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-23 23:02:29,858 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:02:29,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:02:29,858 INFO L85 PathProgramCache]: Analyzing trace with hash 158416425, now seen corresponding path program 1 times [2024-11-23 23:02:29,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:02:29,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878410194] [2024-11-23 23:02:29,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:02:29,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:02:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:02:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:02:32,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:02:32,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878410194] [2024-11-23 23:02:32,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878410194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:02:32,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:02:32,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 23:02:32,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750189058] [2024-11-23 23:02:32,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:02:32,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:02:32,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:02:32,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:02:32,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:02:32,570 INFO L87 Difference]: Start difference. First operand 884 states and 1176 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:02:33,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:02:33,799 INFO L93 Difference]: Finished difference Result 1468 states and 1935 transitions. [2024-11-23 23:02:33,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:02:33,800 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 127 [2024-11-23 23:02:33,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:02:33,807 INFO L225 Difference]: With dead ends: 1468 [2024-11-23 23:02:33,807 INFO L226 Difference]: Without dead ends: 1096 [2024-11-23 23:02:33,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:02:33,809 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 189 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:02:33,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1171 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:02:33,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2024-11-23 23:02:33,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 876. [2024-11-23 23:02:33,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 720 states have (on average 1.273611111111111) internal successors, (917), 726 states have internal predecessors, (917), 118 states have call successors, (118), 37 states have call predecessors, (118), 37 states have return successors, (118), 112 states have call predecessors, (118), 118 states have call successors, (118) [2024-11-23 23:02:33,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1153 transitions. [2024-11-23 23:02:33,993 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1153 transitions. Word has length 127 [2024-11-23 23:02:33,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:02:33,994 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 1153 transitions. [2024-11-23 23:02:33,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:02:33,994 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1153 transitions. [2024-11-23 23:02:33,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:02:33,995 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:02:33,995 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:02:33,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-23 23:02:33,996 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:02:33,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:02:33,996 INFO L85 PathProgramCache]: Analyzing trace with hash -364114085, now seen corresponding path program 1 times [2024-11-23 23:02:33,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:02:33,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313113528] [2024-11-23 23:02:33,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:02:33,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:02:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:04,434 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:03:04,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:04,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313113528] [2024-11-23 23:03:04,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313113528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:04,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:04,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 23:03:04,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133204338] [2024-11-23 23:03:04,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:04,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 23:03:04,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:04,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 23:03:04,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-23 23:03:04,436 INFO L87 Difference]: Start difference. First operand 876 states and 1153 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:03:07,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:07,180 INFO L93 Difference]: Finished difference Result 1629 states and 2135 transitions. [2024-11-23 23:03:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 23:03:07,180 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 127 [2024-11-23 23:03:07,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:07,185 INFO L225 Difference]: With dead ends: 1629 [2024-11-23 23:03:07,185 INFO L226 Difference]: Without dead ends: 1253 [2024-11-23 23:03:07,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2024-11-23 23:03:07,187 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 689 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:07,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 760 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 23:03:07,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2024-11-23 23:03:07,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 895. [2024-11-23 23:03:07,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 739 states have (on average 1.277401894451962) internal successors, (944), 745 states have internal predecessors, (944), 118 states have call successors, (118), 37 states have call predecessors, (118), 37 states have return successors, (118), 112 states have call predecessors, (118), 118 states have call successors, (118) [2024-11-23 23:03:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1180 transitions. [2024-11-23 23:03:07,345 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1180 transitions. Word has length 127 [2024-11-23 23:03:07,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:07,345 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1180 transitions. [2024-11-23 23:03:07,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:03:07,345 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1180 transitions. [2024-11-23 23:03:07,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-23 23:03:07,346 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:07,346 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:07,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-23 23:03:07,347 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:07,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:07,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1272361879, now seen corresponding path program 1 times [2024-11-23 23:03:07,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:07,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181273583] [2024-11-23 23:03:07,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:07,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:03:09,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:09,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181273583] [2024-11-23 23:03:09,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181273583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:09,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:09,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 23:03:09,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727642264] [2024-11-23 23:03:09,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:09,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 23:03:09,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:09,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 23:03:09,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:03:09,583 INFO L87 Difference]: Start difference. First operand 895 states and 1180 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:03:11,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:11,796 INFO L93 Difference]: Finished difference Result 1016 states and 1318 transitions. [2024-11-23 23:03:11,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:03:11,797 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 127 [2024-11-23 23:03:11,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:11,801 INFO L225 Difference]: With dead ends: 1016 [2024-11-23 23:03:11,801 INFO L226 Difference]: Without dead ends: 1014 [2024-11-23 23:03:11,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2024-11-23 23:03:11,802 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 249 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:11,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1024 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1473 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 23:03:11,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2024-11-23 23:03:11,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 896. [2024-11-23 23:03:11,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 740 states have (on average 1.277027027027027) internal successors, (945), 746 states have internal predecessors, (945), 118 states have call successors, (118), 37 states have call predecessors, (118), 37 states have return successors, (118), 112 states have call predecessors, (118), 118 states have call successors, (118) [2024-11-23 23:03:11,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1181 transitions. [2024-11-23 23:03:11,918 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1181 transitions. Word has length 127 [2024-11-23 23:03:11,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:11,918 INFO L471 AbstractCegarLoop]: Abstraction has 896 states and 1181 transitions. [2024-11-23 23:03:11,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:03:11,918 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1181 transitions. [2024-11-23 23:03:11,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-23 23:03:11,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:11,919 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:11,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-23 23:03:11,919 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:11,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:11,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1829756286, now seen corresponding path program 1 times [2024-11-23 23:03:11,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:11,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684811947] [2024-11-23 23:03:11,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:11,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:03:11,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:11,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684811947] [2024-11-23 23:03:11,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684811947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:11,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:11,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:03:11,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063744776] [2024-11-23 23:03:11,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:11,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:03:11,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:11,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:03:11,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:03:11,984 INFO L87 Difference]: Start difference. First operand 896 states and 1181 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:03:12,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:12,311 INFO L93 Difference]: Finished difference Result 1923 states and 2519 transitions. [2024-11-23 23:03:12,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:03:12,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 129 [2024-11-23 23:03:12,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:12,316 INFO L225 Difference]: With dead ends: 1923 [2024-11-23 23:03:12,316 INFO L226 Difference]: Without dead ends: 1131 [2024-11-23 23:03:12,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:03:12,318 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 66 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:12,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 395 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:03:12,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2024-11-23 23:03:12,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 912. [2024-11-23 23:03:12,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 756 states have (on average 1.2738095238095237) internal successors, (963), 762 states have internal predecessors, (963), 118 states have call successors, (118), 37 states have call predecessors, (118), 37 states have return successors, (118), 112 states have call predecessors, (118), 118 states have call successors, (118) [2024-11-23 23:03:12,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1199 transitions. [2024-11-23 23:03:12,435 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1199 transitions. Word has length 129 [2024-11-23 23:03:12,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:12,435 INFO L471 AbstractCegarLoop]: Abstraction has 912 states and 1199 transitions. [2024-11-23 23:03:12,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:03:12,435 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1199 transitions. [2024-11-23 23:03:12,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-23 23:03:12,435 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:12,436 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:12,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-23 23:03:12,436 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:12,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:12,436 INFO L85 PathProgramCache]: Analyzing trace with hash 437170508, now seen corresponding path program 1 times [2024-11-23 23:03:12,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:12,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310672309] [2024-11-23 23:03:12,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:12,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:03:12,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:12,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310672309] [2024-11-23 23:03:12,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310672309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:12,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:12,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:03:12,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241371771] [2024-11-23 23:03:12,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:12,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:03:12,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:12,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:03:12,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:03:12,530 INFO L87 Difference]: Start difference. First operand 912 states and 1199 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:03:12,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:12,872 INFO L93 Difference]: Finished difference Result 2117 states and 2776 transitions. [2024-11-23 23:03:12,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:03:12,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 129 [2024-11-23 23:03:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:12,877 INFO L225 Difference]: With dead ends: 2117 [2024-11-23 23:03:12,877 INFO L226 Difference]: Without dead ends: 1309 [2024-11-23 23:03:12,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:03:12,879 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 68 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:12,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 338 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:03:12,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2024-11-23 23:03:13,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1092. [2024-11-23 23:03:13,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1092 states, 936 states have (on average 1.2916666666666667) internal successors, (1209), 942 states have internal predecessors, (1209), 118 states have call successors, (118), 37 states have call predecessors, (118), 37 states have return successors, (118), 112 states have call predecessors, (118), 118 states have call successors, (118) [2024-11-23 23:03:13,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1092 states to 1092 states and 1445 transitions. [2024-11-23 23:03:13,053 INFO L78 Accepts]: Start accepts. Automaton has 1092 states and 1445 transitions. Word has length 129 [2024-11-23 23:03:13,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:13,054 INFO L471 AbstractCegarLoop]: Abstraction has 1092 states and 1445 transitions. [2024-11-23 23:03:13,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:03:13,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1092 states and 1445 transitions. [2024-11-23 23:03:13,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-23 23:03:13,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:13,055 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:13,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-23 23:03:13,055 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:13,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:13,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1381116405, now seen corresponding path program 1 times [2024-11-23 23:03:13,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:13,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061223281] [2024-11-23 23:03:13,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:13,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:04:08,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:08,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061223281] [2024-11-23 23:04:08,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061223281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:08,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:08,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 23:04:08,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364607742] [2024-11-23 23:04:08,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:08,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 23:04:08,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:08,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 23:04:08,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:04:08,179 INFO L87 Difference]: Start difference. First operand 1092 states and 1445 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 23:04:11,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:11,320 INFO L93 Difference]: Finished difference Result 2513 states and 3309 transitions. [2024-11-23 23:04:11,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 23:04:11,320 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 129 [2024-11-23 23:04:11,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:11,324 INFO L225 Difference]: With dead ends: 2513 [2024-11-23 23:04:11,324 INFO L226 Difference]: Without dead ends: 2045 [2024-11-23 23:04:11,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2024-11-23 23:04:11,325 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 479 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:11,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 741 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 23:04:11,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2024-11-23 23:04:11,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1287. [2024-11-23 23:04:11,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1097 states have (on average 1.2871467639015497) internal successors, (1412), 1104 states have internal predecessors, (1412), 144 states have call successors, (144), 45 states have call predecessors, (144), 45 states have return successors, (144), 137 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:04:11,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1700 transitions. [2024-11-23 23:04:11,466 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1700 transitions. Word has length 129 [2024-11-23 23:04:11,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:11,467 INFO L471 AbstractCegarLoop]: Abstraction has 1287 states and 1700 transitions. [2024-11-23 23:04:11,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 3 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-23 23:04:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1700 transitions. [2024-11-23 23:04:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-23 23:04:11,468 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:11,468 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:11,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-23 23:04:11,468 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:11,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:11,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1612605621, now seen corresponding path program 1 times [2024-11-23 23:04:11,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:11,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634237332] [2024-11-23 23:04:11,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:11,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:04:11,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:11,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634237332] [2024-11-23 23:04:11,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634237332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:11,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:11,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:04:11,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723421797] [2024-11-23 23:04:11,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:11,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:04:11,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:11,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:04:11,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:04:11,535 INFO L87 Difference]: Start difference. First operand 1287 states and 1700 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:04:11,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:11,954 INFO L93 Difference]: Finished difference Result 3163 states and 4126 transitions. [2024-11-23 23:04:11,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:04:11,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 130 [2024-11-23 23:04:11,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:11,961 INFO L225 Difference]: With dead ends: 3163 [2024-11-23 23:04:11,961 INFO L226 Difference]: Without dead ends: 1971 [2024-11-23 23:04:11,963 INFO L434 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 [2024-11-23 23:04:11,964 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 56 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:11,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 195 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:11,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2024-11-23 23:04:12,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1954. [2024-11-23 23:04:12,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1674 states have (on average 1.2437275985663083) internal successors, (2082), 1692 states have internal predecessors, (2082), 204 states have call successors, (204), 75 states have call predecessors, (204), 75 states have return successors, (204), 186 states have call predecessors, (204), 204 states have call successors, (204) [2024-11-23 23:04:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2490 transitions. [2024-11-23 23:04:12,216 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2490 transitions. Word has length 130 [2024-11-23 23:04:12,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:12,217 INFO L471 AbstractCegarLoop]: Abstraction has 1954 states and 2490 transitions. [2024-11-23 23:04:12,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:04:12,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2490 transitions. [2024-11-23 23:04:12,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 23:04:12,218 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:12,218 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:12,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-23 23:04:12,219 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:12,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:12,219 INFO L85 PathProgramCache]: Analyzing trace with hash 100765252, now seen corresponding path program 1 times [2024-11-23 23:04:12,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:12,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144049230] [2024-11-23 23:04:12,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:12,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:04:12,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:12,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144049230] [2024-11-23 23:04:12,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144049230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:12,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:12,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:04:12,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512382943] [2024-11-23 23:04:12,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:12,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:04:12,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:12,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:04:12,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:04:12,287 INFO L87 Difference]: Start difference. First operand 1954 states and 2490 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:04:12,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:12,729 INFO L93 Difference]: Finished difference Result 3643 states and 4609 transitions. [2024-11-23 23:04:12,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:04:12,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 131 [2024-11-23 23:04:12,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:12,735 INFO L225 Difference]: With dead ends: 3643 [2024-11-23 23:04:12,735 INFO L226 Difference]: Without dead ends: 1801 [2024-11-23 23:04:12,738 INFO L434 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 [2024-11-23 23:04:12,738 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 44 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:12,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 193 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:12,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2024-11-23 23:04:12,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1469. [2024-11-23 23:04:12,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1269 states have (on average 1.2419227738376675) internal successors, (1576), 1276 states have internal predecessors, (1576), 144 states have call successors, (144), 55 states have call predecessors, (144), 55 states have return successors, (144), 137 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:04:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1864 transitions. [2024-11-23 23:04:12,967 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1864 transitions. Word has length 131 [2024-11-23 23:04:12,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:12,969 INFO L471 AbstractCegarLoop]: Abstraction has 1469 states and 1864 transitions. [2024-11-23 23:04:12,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:04:12,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1864 transitions. [2024-11-23 23:04:12,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 23:04:12,971 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:12,971 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:12,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-23 23:04:12,971 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:12,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:12,972 INFO L85 PathProgramCache]: Analyzing trace with hash 604660581, now seen corresponding path program 1 times [2024-11-23 23:04:12,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:12,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042176077] [2024-11-23 23:04:12,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:12,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:04:21,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:21,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042176077] [2024-11-23 23:04:21,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042176077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:21,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:21,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-23 23:04:21,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274537315] [2024-11-23 23:04:21,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:21,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 23:04:21,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:21,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 23:04:21,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:04:21,365 INFO L87 Difference]: Start difference. First operand 1469 states and 1864 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:04:27,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:27,230 INFO L93 Difference]: Finished difference Result 2150 states and 2666 transitions. [2024-11-23 23:04:27,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 23:04:27,231 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2024-11-23 23:04:27,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:27,235 INFO L225 Difference]: With dead ends: 2150 [2024-11-23 23:04:27,235 INFO L226 Difference]: Without dead ends: 2148 [2024-11-23 23:04:27,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=259, Invalid=1223, Unknown=0, NotChecked=0, Total=1482 [2024-11-23 23:04:27,237 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 274 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:27,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 999 Invalid, 1770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-23 23:04:27,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2024-11-23 23:04:27,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 1488. [2024-11-23 23:04:27,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1288 states have (on average 1.2437888198757765) internal successors, (1602), 1295 states have internal predecessors, (1602), 144 states have call successors, (144), 55 states have call predecessors, (144), 55 states have return successors, (144), 137 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:04:27,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1890 transitions. [2024-11-23 23:04:27,384 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1890 transitions. Word has length 131 [2024-11-23 23:04:27,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:27,384 INFO L471 AbstractCegarLoop]: Abstraction has 1488 states and 1890 transitions. [2024-11-23 23:04:27,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:04:27,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1890 transitions. [2024-11-23 23:04:27,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 23:04:27,386 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:27,386 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:27,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-23 23:04:27,386 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:27,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:27,387 INFO L85 PathProgramCache]: Analyzing trace with hash -406456669, now seen corresponding path program 1 times [2024-11-23 23:04:27,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:27,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634728438] [2024-11-23 23:04:27,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:27,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:32,013 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:04:32,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:32,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634728438] [2024-11-23 23:04:32,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634728438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:32,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:32,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-23 23:04:32,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466436252] [2024-11-23 23:04:32,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:32,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:04:32,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:32,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:04:32,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:04:32,015 INFO L87 Difference]: Start difference. First operand 1488 states and 1890 transitions. Second operand has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:04:39,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:39,075 INFO L93 Difference]: Finished difference Result 2244 states and 2771 transitions. [2024-11-23 23:04:39,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-23 23:04:39,075 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 131 [2024-11-23 23:04:39,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:39,080 INFO L225 Difference]: With dead ends: 2244 [2024-11-23 23:04:39,080 INFO L226 Difference]: Without dead ends: 2242 [2024-11-23 23:04:39,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=393, Invalid=1769, Unknown=0, NotChecked=0, Total=2162 [2024-11-23 23:04:39,082 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 630 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:39,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 726 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-23 23:04:39,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2024-11-23 23:04:39,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 1497. [2024-11-23 23:04:39,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1297 states have (on average 1.2428681572860447) internal successors, (1612), 1304 states have internal predecessors, (1612), 144 states have call successors, (144), 55 states have call predecessors, (144), 55 states have return successors, (144), 137 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:04:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 1900 transitions. [2024-11-23 23:04:39,334 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 1900 transitions. Word has length 131 [2024-11-23 23:04:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:39,334 INFO L471 AbstractCegarLoop]: Abstraction has 1497 states and 1900 transitions. [2024-11-23 23:04:39,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:04:39,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 1900 transitions. [2024-11-23 23:04:39,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 23:04:39,336 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:39,336 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:39,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-23 23:04:39,336 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:39,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:39,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1178649701, now seen corresponding path program 1 times [2024-11-23 23:04:39,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:39,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960923170] [2024-11-23 23:04:39,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:39,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:04:42,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:42,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960923170] [2024-11-23 23:04:42,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960923170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:42,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:42,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-23 23:04:42,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765974956] [2024-11-23 23:04:42,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:42,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-23 23:04:42,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:42,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-23 23:04:42,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:04:42,664 INFO L87 Difference]: Start difference. First operand 1497 states and 1900 transitions. Second operand has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:04:45,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:45,920 INFO L93 Difference]: Finished difference Result 2118 states and 2631 transitions. [2024-11-23 23:04:45,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-23 23:04:45,920 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 131 [2024-11-23 23:04:45,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:45,926 INFO L225 Difference]: With dead ends: 2118 [2024-11-23 23:04:45,926 INFO L226 Difference]: Without dead ends: 2116 [2024-11-23 23:04:45,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=197, Invalid=925, Unknown=0, NotChecked=0, Total=1122 [2024-11-23 23:04:45,928 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 271 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:45,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 965 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-23 23:04:45,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2024-11-23 23:04:46,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1498. [2024-11-23 23:04:46,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1298 states have (on average 1.2426810477657935) internal successors, (1613), 1305 states have internal predecessors, (1613), 144 states have call successors, (144), 55 states have call predecessors, (144), 55 states have return successors, (144), 137 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:04:46,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 1901 transitions. [2024-11-23 23:04:46,129 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 1901 transitions. Word has length 131 [2024-11-23 23:04:46,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:46,129 INFO L471 AbstractCegarLoop]: Abstraction has 1498 states and 1901 transitions. [2024-11-23 23:04:46,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:04:46,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 1901 transitions. [2024-11-23 23:04:46,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 23:04:46,130 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:46,130 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:46,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-23 23:04:46,130 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:46,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:46,131 INFO L85 PathProgramCache]: Analyzing trace with hash -983687321, now seen corresponding path program 1 times [2024-11-23 23:04:46,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:46,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619856701] [2024-11-23 23:04:46,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:46,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:04:49,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:49,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619856701] [2024-11-23 23:04:49,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619856701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:49,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:49,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 23:04:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678412946] [2024-11-23 23:04:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:49,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 23:04:49,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:49,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 23:04:49,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:04:49,317 INFO L87 Difference]: Start difference. First operand 1498 states and 1901 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:04:50,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:50,980 INFO L93 Difference]: Finished difference Result 2551 states and 3203 transitions. [2024-11-23 23:04:50,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 23:04:50,981 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 131 [2024-11-23 23:04:50,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:50,987 INFO L225 Difference]: With dead ends: 2551 [2024-11-23 23:04:50,987 INFO L226 Difference]: Without dead ends: 2549 [2024-11-23 23:04:50,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-11-23 23:04:50,989 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 172 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:50,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 1232 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:04:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2024-11-23 23:04:51,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 1563. [2024-11-23 23:04:51,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1363 states have (on average 1.244314013206163) internal successors, (1696), 1370 states have internal predecessors, (1696), 144 states have call successors, (144), 55 states have call predecessors, (144), 55 states have return successors, (144), 137 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:04:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 1984 transitions. [2024-11-23 23:04:51,235 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 1984 transitions. Word has length 131 [2024-11-23 23:04:51,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:51,236 INFO L471 AbstractCegarLoop]: Abstraction has 1563 states and 1984 transitions. [2024-11-23 23:04:51,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:04:51,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 1984 transitions. [2024-11-23 23:04:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 23:04:51,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:51,237 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:51,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-23 23:04:51,238 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:51,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:51,238 INFO L85 PathProgramCache]: Analyzing trace with hash -409698201, now seen corresponding path program 1 times [2024-11-23 23:04:51,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:51,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339880858] [2024-11-23 23:04:51,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:51,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:04:54,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:54,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339880858] [2024-11-23 23:04:54,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339880858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:54,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:54,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-23 23:04:54,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327722292] [2024-11-23 23:04:54,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:54,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 23:04:54,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:54,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 23:04:54,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:04:54,261 INFO L87 Difference]: Start difference. First operand 1563 states and 1984 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:04:57,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:57,219 INFO L93 Difference]: Finished difference Result 2428 states and 3042 transitions. [2024-11-23 23:04:57,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-23 23:04:57,219 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 131 [2024-11-23 23:04:57,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:57,226 INFO L225 Difference]: With dead ends: 2428 [2024-11-23 23:04:57,227 INFO L226 Difference]: Without dead ends: 2426 [2024-11-23 23:04:57,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2024-11-23 23:04:57,228 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 258 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:57,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1547 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 23:04:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2024-11-23 23:04:57,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1527. [2024-11-23 23:04:57,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1327 states have (on average 1.2418990203466467) internal successors, (1648), 1334 states have internal predecessors, (1648), 144 states have call successors, (144), 55 states have call predecessors, (144), 55 states have return successors, (144), 137 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:04:57,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 1936 transitions. [2024-11-23 23:04:57,492 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 1936 transitions. Word has length 131 [2024-11-23 23:04:57,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:57,492 INFO L471 AbstractCegarLoop]: Abstraction has 1527 states and 1936 transitions. [2024-11-23 23:04:57,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:04:57,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 1936 transitions. [2024-11-23 23:04:57,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 23:04:57,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:57,494 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:57,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-23 23:04:57,494 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:57,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:57,494 INFO L85 PathProgramCache]: Analyzing trace with hash 2083072293, now seen corresponding path program 1 times [2024-11-23 23:04:57,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:57,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482929651] [2024-11-23 23:04:57,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:57,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:05:03,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:03,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482929651] [2024-11-23 23:05:03,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482929651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:03,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:03,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-23 23:05:03,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046054021] [2024-11-23 23:05:03,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:03,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:05:03,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:03,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:05:03,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:05:03,616 INFO L87 Difference]: Start difference. First operand 1527 states and 1936 transitions. Second operand has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:05:08,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:08,072 INFO L93 Difference]: Finished difference Result 1763 states and 2209 transitions. [2024-11-23 23:05:08,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-23 23:05:08,073 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2024-11-23 23:05:08,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:08,076 INFO L225 Difference]: With dead ends: 1763 [2024-11-23 23:05:08,076 INFO L226 Difference]: Without dead ends: 1761 [2024-11-23 23:05:08,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=243, Invalid=1089, Unknown=0, NotChecked=0, Total=1332 [2024-11-23 23:05:08,077 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 437 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:08,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1118 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-23 23:05:08,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2024-11-23 23:05:08,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 1534. [2024-11-23 23:05:08,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1334 states have (on average 1.2428785607196402) internal successors, (1658), 1341 states have internal predecessors, (1658), 144 states have call successors, (144), 55 states have call predecessors, (144), 55 states have return successors, (144), 137 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:05:08,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 1946 transitions. [2024-11-23 23:05:08,271 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 1946 transitions. Word has length 131 [2024-11-23 23:05:08,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:08,271 INFO L471 AbstractCegarLoop]: Abstraction has 1534 states and 1946 transitions. [2024-11-23 23:05:08,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 2 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-23 23:05:08,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 1946 transitions. [2024-11-23 23:05:08,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 23:05:08,272 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:08,273 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:08,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-23 23:05:08,273 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:08,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:08,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1637905883, now seen corresponding path program 1 times [2024-11-23 23:05:08,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:08,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603898912] [2024-11-23 23:05:08,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:08,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:05:10,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:10,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603898912] [2024-11-23 23:05:10,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603898912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:10,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:10,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 23:05:10,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193035725] [2024-11-23 23:05:10,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:10,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 23:05:10,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:10,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 23:05:10,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:05:10,805 INFO L87 Difference]: Start difference. First operand 1534 states and 1946 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:05:12,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:12,230 INFO L93 Difference]: Finished difference Result 1750 states and 2189 transitions. [2024-11-23 23:05:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:05:12,230 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 131 [2024-11-23 23:05:12,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:12,234 INFO L225 Difference]: With dead ends: 1750 [2024-11-23 23:05:12,234 INFO L226 Difference]: Without dead ends: 1748 [2024-11-23 23:05:12,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:05:12,236 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 133 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:12,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1001 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 23:05:12,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2024-11-23 23:05:12,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1558. [2024-11-23 23:05:12,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1358 states have (on average 1.2444771723122239) internal successors, (1690), 1365 states have internal predecessors, (1690), 144 states have call successors, (144), 55 states have call predecessors, (144), 55 states have return successors, (144), 137 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:05:12,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 1978 transitions. [2024-11-23 23:05:12,506 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 1978 transitions. Word has length 131 [2024-11-23 23:05:12,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:12,507 INFO L471 AbstractCegarLoop]: Abstraction has 1558 states and 1978 transitions. [2024-11-23 23:05:12,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:05:12,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 1978 transitions. [2024-11-23 23:05:12,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 23:05:12,508 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:12,508 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:12,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-11-23 23:05:12,509 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:12,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:12,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1068713511, now seen corresponding path program 1 times [2024-11-23 23:05:12,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:12,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242275290] [2024-11-23 23:05:12,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:12,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:05:17,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:17,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242275290] [2024-11-23 23:05:17,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242275290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:17,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:17,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-23 23:05:17,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817975049] [2024-11-23 23:05:17,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:17,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-23 23:05:17,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:17,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-23 23:05:17,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2024-11-23 23:05:17,834 INFO L87 Difference]: Start difference. First operand 1558 states and 1978 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:05:23,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:23,405 INFO L93 Difference]: Finished difference Result 2055 states and 2564 transitions. [2024-11-23 23:05:23,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 23:05:23,405 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 131 [2024-11-23 23:05:23,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:23,410 INFO L225 Difference]: With dead ends: 2055 [2024-11-23 23:05:23,410 INFO L226 Difference]: Without dead ends: 2053 [2024-11-23 23:05:23,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=312, Invalid=1328, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 23:05:23,411 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 414 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:23,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 1375 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-23 23:05:23,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2024-11-23 23:05:23,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1556. [2024-11-23 23:05:23,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1356 states have (on average 1.2448377581120944) internal successors, (1688), 1363 states have internal predecessors, (1688), 144 states have call successors, (144), 55 states have call predecessors, (144), 55 states have return successors, (144), 137 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 23:05:23,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 1976 transitions. [2024-11-23 23:05:23,579 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 1976 transitions. Word has length 131 [2024-11-23 23:05:23,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:23,579 INFO L471 AbstractCegarLoop]: Abstraction has 1556 states and 1976 transitions. [2024-11-23 23:05:23,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-23 23:05:23,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 1976 transitions. [2024-11-23 23:05:23,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-23 23:05:23,581 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:23,581 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:23,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-11-23 23:05:23,581 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:23,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:23,581 INFO L85 PathProgramCache]: Analyzing trace with hash 745209191, now seen corresponding path program 1 times [2024-11-23 23:05:23,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:23,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166881794] [2024-11-23 23:05:23,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:23,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-11-23 23:05:25,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:25,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166881794] [2024-11-23 23:05:25,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166881794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:25,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:25,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 23:05:25,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931642986] [2024-11-23 23:05:25,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:25,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 23:05:25,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:25,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 23:05:25,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-23 23:05:25,115 INFO L87 Difference]: Start difference. First operand 1556 states and 1976 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18)