./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_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_ca33a254-1726-4c78-aea8-aa897d6e6650/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/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_ca33a254-1726-4c78-aea8-aa897d6e6650/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/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_ca33a254-1726-4c78-aea8-aa897d6e6650/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 17124c627a77300cd44285b9c4c316438e4d73c0a011ab8330c0a1114bb82733 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:48:31,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:48:31,532 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:48:31,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:48:31,540 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:48:31,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:48:31,582 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:48:31,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:48:31,582 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:48:31,582 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:48:31,582 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:48:31,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:48:31,583 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:48:31,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:48:31,583 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:48:31,583 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:48:31,583 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:48:31,584 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:48:31,584 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:48:31,584 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:48:31,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:48:31,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:48:31,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:48:31,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:48:31,586 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:48:31,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:48:31,586 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:48:31,586 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:48:31,587 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:48:31,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:48:31,587 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:48:31,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:48:31,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:48:31,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:48:31,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:48:31,588 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:48:31,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:48:31,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:48:31,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:48:31,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:48:31,588 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:48:31,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:48:31,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:48:31,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:48:31,588 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:48:31,589 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:48:31,589 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:48:31,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:48:31,589 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_ca33a254-1726-4c78-aea8-aa897d6e6650/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 -> 17124c627a77300cd44285b9c4c316438e4d73c0a011ab8330c0a1114bb82733 [2024-11-23 22:48:31,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:48:31,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:48:31,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:48:31,938 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:48:31,939 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:48:31,940 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-10.i [2024-11-23 22:48:34,932 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/bin/uautomizer-verify-LYvppIcaGC/data/c5a2cb1ee/18958cac62fe472ab2d9621f1084f017/FLAG92cddd3c9 [2024-11-23 22:48:35,272 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:48:35,273 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-10.i [2024-11-23 22:48:35,280 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/bin/uautomizer-verify-LYvppIcaGC/data/c5a2cb1ee/18958cac62fe472ab2d9621f1084f017/FLAG92cddd3c9 [2024-11-23 22:48:35,295 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/bin/uautomizer-verify-LYvppIcaGC/data/c5a2cb1ee/18958cac62fe472ab2d9621f1084f017 [2024-11-23 22:48:35,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:48:35,299 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:48:35,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:48:35,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:48:35,305 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:48:35,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:48:35" (1/1) ... [2024-11-23 22:48:35,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5720b522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:48:35, skipping insertion in model container [2024-11-23 22:48:35,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:48:35" (1/1) ... [2024-11-23 22:48:35,327 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:48:35,491 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_ca33a254-1726-4c78-aea8-aa897d6e6650/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-10.i[915,928] [2024-11-23 22:48:35,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:48:35,624 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:48:35,635 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_ca33a254-1726-4c78-aea8-aa897d6e6650/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-10.i[915,928] [2024-11-23 22:48:35,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:48:35,697 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:48:35,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:48:35 WrapperNode [2024-11-23 22:48:35,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:48:35,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:48:35,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:48:35,699 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:48:35,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:48:35" (1/1) ... [2024-11-23 22:48:35,726 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:48:35" (1/1) ... [2024-11-23 22:48:35,783 INFO L138 Inliner]: procedures = 26, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 213 [2024-11-23 22:48:35,784 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:48:35,784 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:48:35,784 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:48:35,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:48:35,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:48:35" (1/1) ... [2024-11-23 22:48:35,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:48:35" (1/1) ... [2024-11-23 22:48:35,800 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:48:35" (1/1) ... [2024-11-23 22:48:35,816 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 22:48:35,816 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:48:35" (1/1) ... [2024-11-23 22:48:35,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:48:35" (1/1) ... [2024-11-23 22:48:35,826 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:48:35" (1/1) ... [2024-11-23 22:48:35,828 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:48:35" (1/1) ... [2024-11-23 22:48:35,831 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:48:35" (1/1) ... [2024-11-23 22:48:35,834 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:48:35" (1/1) ... [2024-11-23 22:48:35,836 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:48:35" (1/1) ... [2024-11-23 22:48:35,840 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:48:35,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:48:35,841 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:48:35,841 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:48:35,842 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:48:35" (1/1) ... [2024-11-23 22:48:35,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:48:35,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:48:35,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:48:35,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:48:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:48:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 22:48:35,924 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 22:48:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:48:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:48:35,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:48:36,013 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:48:36,017 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:48:36,550 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-23 22:48:36,550 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:48:36,561 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:48:36,562 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 22:48:36,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:48:36 BoogieIcfgContainer [2024-11-23 22:48:36,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:48:36,565 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:48:36,565 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:48:36,602 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:48:36,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:48:35" (1/3) ... [2024-11-23 22:48:36,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f2fe87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:48:36, skipping insertion in model container [2024-11-23 22:48:36,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:48:35" (2/3) ... [2024-11-23 22:48:36,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f2fe87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:48:36, skipping insertion in model container [2024-11-23 22:48:36,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:48:36" (3/3) ... [2024-11-23 22:48:36,606 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-10_file-10.i [2024-11-23 22:48:36,622 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:48:36,624 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-10_file-10.i that has 2 procedures, 92 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 22:48:36,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:48:36,719 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;@56b1f586, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:48:36,719 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:48:36,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 64 states have (on average 1.40625) internal successors, (90), 65 states have internal predecessors, (90), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-23 22:48:36,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-23 22:48:36,742 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:48:36,743 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:36,744 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:48:36,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:36,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2101394287, now seen corresponding path program 1 times [2024-11-23 22:48:36,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:36,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928883794] [2024-11-23 22:48:36,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:36,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2024-11-23 22:48:37,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:37,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928883794] [2024-11-23 22:48:37,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928883794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:48:37,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020150181] [2024-11-23 22:48:37,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:37,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:48:37,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:48:37,098 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:48:37,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:48:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:37,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 22:48:37,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:48:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2024-11-23 22:48:37,390 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:48:37,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020150181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:37,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:48:37,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 22:48:37,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7648208] [2024-11-23 22:48:37,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:37,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 22:48:37,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:37,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 22:48:37,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:48:37,425 INFO L87 Difference]: Start difference. First operand has 92 states, 64 states have (on average 1.40625) internal successors, (90), 65 states have internal predecessors, (90), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:48:37,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:48:37,464 INFO L93 Difference]: Finished difference Result 177 states and 299 transitions. [2024-11-23 22:48:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 22:48:37,467 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) Word has length 164 [2024-11-23 22:48:37,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:48:37,475 INFO L225 Difference]: With dead ends: 177 [2024-11-23 22:48:37,475 INFO L226 Difference]: Without dead ends: 88 [2024-11-23 22:48:37,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:48:37,482 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:48:37,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:48:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-23 22:48:37,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-23 22:48:37,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 61 states have (on average 1.3442622950819672) internal successors, (82), 61 states have internal predecessors, (82), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-23 22:48:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 132 transitions. [2024-11-23 22:48:37,570 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 132 transitions. Word has length 164 [2024-11-23 22:48:37,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:48:37,571 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 132 transitions. [2024-11-23 22:48:37,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:48:37,571 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 132 transitions. [2024-11-23 22:48:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-23 22:48:37,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:48:37,575 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:37,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 22:48:37,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca33a254-1726-4c78-aea8-aa897d6e6650/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 22:48:37,781 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:48:37,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:37,782 INFO L85 PathProgramCache]: Analyzing trace with hash -615042911, now seen corresponding path program 1 times [2024-11-23 22:48:37,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:37,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50638321] [2024-11-23 22:48:37,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:37,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:48:38,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:38,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50638321] [2024-11-23 22:48:38,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50638321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:38,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:48:38,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:48:38,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681261854] [2024-11-23 22:48:38,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:38,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:48:38,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:38,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:48:38,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:48:38,673 INFO L87 Difference]: Start difference. First operand 88 states and 132 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:48:38,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:48:38,995 INFO L93 Difference]: Finished difference Result 259 states and 391 transitions. [2024-11-23 22:48:38,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:48:38,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 165 [2024-11-23 22:48:38,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:48:38,999 INFO L225 Difference]: With dead ends: 259 [2024-11-23 22:48:38,999 INFO L226 Difference]: Without dead ends: 174 [2024-11-23 22:48:39,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:48:39,001 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 94 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:48:39,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 499 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:48:39,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-23 22:48:39,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2024-11-23 22:48:39,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 87 states have internal predecessors, (112), 50 states have call successors, (50), 2 states have call predecessors, (50), 2 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 22:48:39,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 212 transitions. [2024-11-23 22:48:39,060 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 212 transitions. Word has length 165 [2024-11-23 22:48:39,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:48:39,061 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 212 transitions. [2024-11-23 22:48:39,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:48:39,062 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 212 transitions. [2024-11-23 22:48:39,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-23 22:48:39,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:48:39,065 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:39,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:48:39,066 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:48:39,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:39,067 INFO L85 PathProgramCache]: Analyzing trace with hash 2087881671, now seen corresponding path program 1 times [2024-11-23 22:48:39,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:39,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199259509] [2024-11-23 22:48:39,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:39,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:39,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:48:39,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:39,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199259509] [2024-11-23 22:48:39,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199259509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:39,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:48:39,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:48:39,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270339585] [2024-11-23 22:48:39,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:39,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:48:39,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:39,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:48:39,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:48:39,586 INFO L87 Difference]: Start difference. First operand 140 states and 212 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:48:39,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:48:39,819 INFO L93 Difference]: Finished difference Result 237 states and 353 transitions. [2024-11-23 22:48:39,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:48:39,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 166 [2024-11-23 22:48:39,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:48:39,825 INFO L225 Difference]: With dead ends: 237 [2024-11-23 22:48:39,827 INFO L226 Difference]: Without dead ends: 150 [2024-11-23 22:48:39,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 22:48:39,829 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 112 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:48:39,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 224 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:48:39,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-23 22:48:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-23 22:48:39,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 95 states have (on average 1.263157894736842) internal successors, (120), 95 states have internal predecessors, (120), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 22:48:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 220 transitions. [2024-11-23 22:48:39,880 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 220 transitions. Word has length 166 [2024-11-23 22:48:39,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:48:39,883 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 220 transitions. [2024-11-23 22:48:39,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:48:39,884 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 220 transitions. [2024-11-23 22:48:39,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-23 22:48:39,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:48:39,890 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:39,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:48:39,891 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:48:39,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:39,891 INFO L85 PathProgramCache]: Analyzing trace with hash 228644080, now seen corresponding path program 1 times [2024-11-23 22:48:39,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:39,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746140728] [2024-11-23 22:48:39,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:39,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:48:40,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:40,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746140728] [2024-11-23 22:48:40,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746140728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:40,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:48:40,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:48:40,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685527705] [2024-11-23 22:48:40,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:40,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:48:40,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:40,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:48:40,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:48:40,347 INFO L87 Difference]: Start difference. First operand 150 states and 220 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:48:40,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:48:40,554 INFO L93 Difference]: Finished difference Result 244 states and 359 transitions. [2024-11-23 22:48:40,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:48:40,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 167 [2024-11-23 22:48:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:48:40,558 INFO L225 Difference]: With dead ends: 244 [2024-11-23 22:48:40,559 INFO L226 Difference]: Without dead ends: 152 [2024-11-23 22:48:40,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 22:48:40,561 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 107 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:48:40,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 304 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:48:40,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-23 22:48:40,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2024-11-23 22:48:40,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 95 states have (on average 1.263157894736842) internal successors, (120), 95 states have internal predecessors, (120), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 22:48:40,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 220 transitions. [2024-11-23 22:48:40,613 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 220 transitions. Word has length 167 [2024-11-23 22:48:40,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:48:40,615 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 220 transitions. [2024-11-23 22:48:40,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:48:40,616 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 220 transitions. [2024-11-23 22:48:40,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-23 22:48:40,620 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:48:40,620 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:40,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:48:40,621 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:48:40,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:40,621 INFO L85 PathProgramCache]: Analyzing trace with hash -404164286, now seen corresponding path program 1 times [2024-11-23 22:48:40,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:40,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707868646] [2024-11-23 22:48:40,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:40,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:48:40,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:40,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707868646] [2024-11-23 22:48:40,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707868646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:40,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:48:40,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:48:40,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060025804] [2024-11-23 22:48:40,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:40,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:48:40,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:40,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:48:40,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:48:40,899 INFO L87 Difference]: Start difference. First operand 150 states and 220 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:48:40,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:48:40,956 INFO L93 Difference]: Finished difference Result 242 states and 355 transitions. [2024-11-23 22:48:40,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:48:40,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 167 [2024-11-23 22:48:40,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:48:40,963 INFO L225 Difference]: With dead ends: 242 [2024-11-23 22:48:40,963 INFO L226 Difference]: Without dead ends: 150 [2024-11-23 22:48:40,963 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 22:48:40,966 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 124 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:48:40,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 267 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:48:40,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-23 22:48:41,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-23 22:48:41,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 95 states have internal predecessors, (118), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 22:48:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 218 transitions. [2024-11-23 22:48:41,016 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 218 transitions. Word has length 167 [2024-11-23 22:48:41,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:48:41,017 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 218 transitions. [2024-11-23 22:48:41,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:48:41,017 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 218 transitions. [2024-11-23 22:48:41,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-23 22:48:41,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:48:41,020 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:41,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 22:48:41,021 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:48:41,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:41,021 INFO L85 PathProgramCache]: Analyzing trace with hash 18537540, now seen corresponding path program 1 times [2024-11-23 22:48:41,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:41,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584331687] [2024-11-23 22:48:41,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:41,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:49:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:49:51,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:49:51,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584331687] [2024-11-23 22:49:51,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584331687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:49:51,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:49:51,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 22:49:51,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769436616] [2024-11-23 22:49:51,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:49:51,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 22:49:51,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:49:51,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 22:49:51,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:49:51,505 INFO L87 Difference]: Start difference. First operand 150 states and 218 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:49:55,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:49:55,216 INFO L93 Difference]: Finished difference Result 425 states and 605 transitions. [2024-11-23 22:49:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 22:49:55,217 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 167 [2024-11-23 22:49:55,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:49:55,219 INFO L225 Difference]: With dead ends: 425 [2024-11-23 22:49:55,219 INFO L226 Difference]: Without dead ends: 335 [2024-11-23 22:49:55,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2024-11-23 22:49:55,221 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 964 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:49:55,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 642 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 22:49:55,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-23 22:49:55,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 177. [2024-11-23 22:49:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 121 states have internal predecessors, (154), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 22:49:55,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 254 transitions. [2024-11-23 22:49:55,246 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 254 transitions. Word has length 167 [2024-11-23 22:49:55,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:49:55,246 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 254 transitions. [2024-11-23 22:49:55,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:49:55,247 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 254 transitions. [2024-11-23 22:49:55,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-23 22:49:55,249 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:49:55,249 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:55,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:49:55,250 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:49:55,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:49:55,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1166662980, now seen corresponding path program 1 times [2024-11-23 22:49:55,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:49:55,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791430198] [2024-11-23 22:49:55,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:49:55,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:49:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:05,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:50:05,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:05,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791430198] [2024-11-23 22:50:05,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791430198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:05,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:05,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 22:50:05,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269416361] [2024-11-23 22:50:05,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:05,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 22:50:05,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:05,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 22:50:05,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:50:05,069 INFO L87 Difference]: Start difference. First operand 177 states and 254 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:50:07,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:07,405 INFO L93 Difference]: Finished difference Result 460 states and 646 transitions. [2024-11-23 22:50:07,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 22:50:07,406 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 167 [2024-11-23 22:50:07,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:07,409 INFO L225 Difference]: With dead ends: 460 [2024-11-23 22:50:07,409 INFO L226 Difference]: Without dead ends: 370 [2024-11-23 22:50:07,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2024-11-23 22:50:07,411 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 534 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:07,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 683 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 22:50:07,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-23 22:50:07,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 178. [2024-11-23 22:50:07,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 122 states have (on average 1.278688524590164) internal successors, (156), 122 states have internal predecessors, (156), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 22:50:07,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 256 transitions. [2024-11-23 22:50:07,447 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 256 transitions. Word has length 167 [2024-11-23 22:50:07,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:07,449 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 256 transitions. [2024-11-23 22:50:07,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:50:07,450 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 256 transitions. [2024-11-23 22:50:07,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-23 22:50:07,455 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:07,455 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:07,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:50:07,455 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:07,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:07,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1846721350, now seen corresponding path program 1 times [2024-11-23 22:50:07,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:07,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521621011] [2024-11-23 22:50:07,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:07,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:50:27,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:27,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521621011] [2024-11-23 22:50:27,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521621011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:27,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:27,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:50:27,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345503629] [2024-11-23 22:50:27,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:27,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:50:27,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:27,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:50:27,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:50:27,949 INFO L87 Difference]: Start difference. First operand 178 states and 256 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:50:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:29,431 INFO L93 Difference]: Finished difference Result 487 states and 695 transitions. [2024-11-23 22:50:29,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:50:29,433 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 167 [2024-11-23 22:50:29,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:29,436 INFO L225 Difference]: With dead ends: 487 [2024-11-23 22:50:29,436 INFO L226 Difference]: Without dead ends: 397 [2024-11-23 22:50:29,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2024-11-23 22:50:29,437 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 387 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:29,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 672 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 22:50:29,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-23 22:50:29,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 276. [2024-11-23 22:50:29,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 192 states have (on average 1.2864583333333333) internal successors, (247), 192 states have internal predecessors, (247), 75 states have call successors, (75), 8 states have call predecessors, (75), 8 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-23 22:50:29,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 397 transitions. [2024-11-23 22:50:29,486 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 397 transitions. Word has length 167 [2024-11-23 22:50:29,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:29,487 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 397 transitions. [2024-11-23 22:50:29,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:50:29,487 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 397 transitions. [2024-11-23 22:50:29,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-23 22:50:29,490 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:29,490 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:29,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 22:50:29,493 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:29,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:29,494 INFO L85 PathProgramCache]: Analyzing trace with hash -239627898, now seen corresponding path program 1 times [2024-11-23 22:50:29,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:29,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14634384] [2024-11-23 22:50:29,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:29,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:50:56,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:56,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14634384] [2024-11-23 22:50:56,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14634384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:56,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:56,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-23 22:50:56,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622416377] [2024-11-23 22:50:56,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:56,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 22:50:56,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:56,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 22:50:56,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:50:56,144 INFO L87 Difference]: Start difference. First operand 276 states and 397 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-23 22:51:04,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:04,531 INFO L93 Difference]: Finished difference Result 607 states and 852 transitions. [2024-11-23 22:51:04,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-23 22:51:04,532 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 167 [2024-11-23 22:51:04,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:04,535 INFO L225 Difference]: With dead ends: 607 [2024-11-23 22:51:04,535 INFO L226 Difference]: Without dead ends: 407 [2024-11-23 22:51:04,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=237, Invalid=1023, Unknown=0, NotChecked=0, Total=1260 [2024-11-23 22:51:04,536 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 563 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:04,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 1103 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-23 22:51:04,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2024-11-23 22:51:04,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 300. [2024-11-23 22:51:04,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 212 states have (on average 1.2735849056603774) internal successors, (270), 212 states have internal predecessors, (270), 75 states have call successors, (75), 12 states have call predecessors, (75), 12 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-23 22:51:04,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 420 transitions. [2024-11-23 22:51:04,588 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 420 transitions. Word has length 167 [2024-11-23 22:51:04,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:04,588 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 420 transitions. [2024-11-23 22:51:04,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-23 22:51:04,589 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 420 transitions. [2024-11-23 22:51:04,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-23 22:51:04,591 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:04,591 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:04,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 22:51:04,591 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:04,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:04,592 INFO L85 PathProgramCache]: Analyzing trace with hash 908497542, now seen corresponding path program 1 times [2024-11-23 22:51:04,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:04,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940498101] [2024-11-23 22:51:04,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:04,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:51:19,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:19,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940498101] [2024-11-23 22:51:19,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940498101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:19,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:19,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:51:19,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526699772] [2024-11-23 22:51:19,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:19,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:51:19,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:19,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:51:19,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:51:19,073 INFO L87 Difference]: Start difference. First operand 300 states and 420 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:51:21,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:21,008 INFO L93 Difference]: Finished difference Result 593 states and 822 transitions. [2024-11-23 22:51:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 22:51:21,009 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 167 [2024-11-23 22:51:21,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:21,012 INFO L225 Difference]: With dead ends: 593 [2024-11-23 22:51:21,012 INFO L226 Difference]: Without dead ends: 503 [2024-11-23 22:51:21,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2024-11-23 22:51:21,013 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 563 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:21,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 691 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 22:51:21,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-23 22:51:21,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 312. [2024-11-23 22:51:21,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 224 states have (on average 1.2857142857142858) internal successors, (288), 224 states have internal predecessors, (288), 75 states have call successors, (75), 12 states have call predecessors, (75), 12 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-23 22:51:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 438 transitions. [2024-11-23 22:51:21,061 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 438 transitions. Word has length 167 [2024-11-23 22:51:21,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:21,062 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 438 transitions. [2024-11-23 22:51:21,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:51:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 438 transitions. [2024-11-23 22:51:21,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-23 22:51:21,064 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:21,064 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:21,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 22:51:21,064 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:21,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:21,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1588555912, now seen corresponding path program 1 times [2024-11-23 22:51:21,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:21,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938633283] [2024-11-23 22:51:21,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:21,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:47,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:51:47,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:47,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938633283] [2024-11-23 22:51:47,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938633283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:47,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:47,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 22:51:47,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185596204] [2024-11-23 22:51:47,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:47,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:51:47,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:47,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:51:47,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:51:47,267 INFO L87 Difference]: Start difference. First operand 312 states and 438 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:51:50,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:50,005 INFO L93 Difference]: Finished difference Result 549 states and 763 transitions. [2024-11-23 22:51:50,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 22:51:50,007 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 167 [2024-11-23 22:51:50,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:50,013 INFO L225 Difference]: With dead ends: 549 [2024-11-23 22:51:50,013 INFO L226 Difference]: Without dead ends: 459 [2024-11-23 22:51:50,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2024-11-23 22:51:50,018 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 558 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:50,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 774 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 22:51:50,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-23 22:51:50,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 307. [2024-11-23 22:51:50,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 219 states have (on average 1.278538812785388) internal successors, (280), 219 states have internal predecessors, (280), 75 states have call successors, (75), 12 states have call predecessors, (75), 12 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-23 22:51:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 430 transitions. [2024-11-23 22:51:50,069 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 430 transitions. Word has length 167 [2024-11-23 22:51:50,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:50,070 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 430 transitions. [2024-11-23 22:51:50,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:51:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 430 transitions. [2024-11-23 22:51:50,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-23 22:51:50,073 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:50,073 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:50,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 22:51:50,075 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:50,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:50,076 INFO L85 PathProgramCache]: Analyzing trace with hash -322472444, now seen corresponding path program 1 times [2024-11-23 22:51:50,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:50,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994002900] [2024-11-23 22:51:50,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:50,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:52:41,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:52:41,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994002900] [2024-11-23 22:52:41,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994002900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:52:41,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:52:41,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 22:52:41,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425495025] [2024-11-23 22:52:41,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:52:41,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 22:52:41,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:52:41,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 22:52:41,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:52:41,802 INFO L87 Difference]: Start difference. First operand 307 states and 430 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:52:43,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:52:43,265 INFO L93 Difference]: Finished difference Result 616 states and 856 transitions. [2024-11-23 22:52:43,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:52:43,265 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 167 [2024-11-23 22:52:43,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:52:43,268 INFO L225 Difference]: With dead ends: 616 [2024-11-23 22:52:43,268 INFO L226 Difference]: Without dead ends: 399 [2024-11-23 22:52:43,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=133, Invalid=209, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:52:43,270 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 395 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:52:43,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 751 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:52:43,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-11-23 22:52:43,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 315. [2024-11-23 22:52:43,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 227 states have (on average 1.277533039647577) internal successors, (290), 227 states have internal predecessors, (290), 75 states have call successors, (75), 12 states have call predecessors, (75), 12 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-23 22:52:43,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 440 transitions. [2024-11-23 22:52:43,316 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 440 transitions. Word has length 167 [2024-11-23 22:52:43,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:52:43,318 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 440 transitions. [2024-11-23 22:52:43,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:52:43,319 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 440 transitions. [2024-11-23 22:52:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-23 22:52:43,320 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:52:43,321 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:52:43,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 22:52:43,321 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:52:43,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:52:43,322 INFO L85 PathProgramCache]: Analyzing trace with hash -580637882, now seen corresponding path program 1 times [2024-11-23 22:52:43,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:52:43,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872708146] [2024-11-23 22:52:43,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:43,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:52:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:53:02,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:53:02,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:53:02,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872708146] [2024-11-23 22:53:02,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872708146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:53:02,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:53:02,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:53:02,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532207234] [2024-11-23 22:53:02,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:53:02,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:53:02,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:53:02,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:53:02,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:53:02,762 INFO L87 Difference]: Start difference. First operand 315 states and 440 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:53:05,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:53:05,106 INFO L93 Difference]: Finished difference Result 626 states and 868 transitions. [2024-11-23 22:53:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:53:05,107 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 167 [2024-11-23 22:53:05,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:53:05,110 INFO L225 Difference]: With dead ends: 626 [2024-11-23 22:53:05,110 INFO L226 Difference]: Without dead ends: 401 [2024-11-23 22:53:05,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-11-23 22:53:05,112 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 314 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:53:05,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1086 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 22:53:05,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-23 22:53:05,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 309. [2024-11-23 22:53:05,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 221 states have (on average 1.2760180995475112) internal successors, (282), 221 states have internal predecessors, (282), 75 states have call successors, (75), 12 states have call predecessors, (75), 12 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-23 22:53:05,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 432 transitions. [2024-11-23 22:53:05,158 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 432 transitions. Word has length 167 [2024-11-23 22:53:05,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:53:05,159 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 432 transitions. [2024-11-23 22:53:05,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:53:05,159 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 432 transitions. [2024-11-23 22:53:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-23 22:53:05,161 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:53:05,161 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:05,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 22:53:05,162 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:53:05,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:53:05,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1975607166, now seen corresponding path program 1 times [2024-11-23 22:53:05,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:53:05,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81790080] [2024-11-23 22:53:05,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:53:05,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:53:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:53:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:53:57,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:53:57,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81790080] [2024-11-23 22:53:57,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81790080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:53:57,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:53:57,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:53:57,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231168827] [2024-11-23 22:53:57,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:53:57,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:53:57,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:53:57,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:53:57,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:53:57,307 INFO L87 Difference]: Start difference. First operand 309 states and 432 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:53:58,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:53:58,579 INFO L93 Difference]: Finished difference Result 556 states and 779 transitions. [2024-11-23 22:53:58,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:53:58,580 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 167 [2024-11-23 22:53:58,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:53:58,583 INFO L225 Difference]: With dead ends: 556 [2024-11-23 22:53:58,583 INFO L226 Difference]: Without dead ends: 466 [2024-11-23 22:53:58,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:53:58,584 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 262 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:53:58,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 560 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 22:53:58,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-11-23 22:53:58,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 328. [2024-11-23 22:53:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 240 states have (on average 1.2916666666666667) internal successors, (310), 240 states have internal predecessors, (310), 75 states have call successors, (75), 12 states have call predecessors, (75), 12 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2024-11-23 22:53:58,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 460 transitions. [2024-11-23 22:53:58,629 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 460 transitions. Word has length 167 [2024-11-23 22:53:58,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:53:58,630 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 460 transitions. [2024-11-23 22:53:58,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:53:58,630 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 460 transitions. [2024-11-23 22:53:58,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-23 22:53:58,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:53:58,633 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:58,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 22:53:58,633 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:53:58,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:53:58,635 INFO L85 PathProgramCache]: Analyzing trace with hash 2061194692, now seen corresponding path program 1 times [2024-11-23 22:53:58,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:53:58,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161056537] [2024-11-23 22:53:58,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:53:58,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:53:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:02,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:55:02,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:02,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161056537] [2024-11-23 22:55:02,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161056537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:55:02,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:55:02,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 22:55:02,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977798801] [2024-11-23 22:55:02,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:55:02,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 22:55:02,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:02,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 22:55:02,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:55:02,968 INFO L87 Difference]: Start difference. First operand 328 states and 460 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-23 22:55:06,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:55:06,237 INFO L93 Difference]: Finished difference Result 638 states and 896 transitions. [2024-11-23 22:55:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:55:06,238 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 167 [2024-11-23 22:55:06,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:55:06,241 INFO L225 Difference]: With dead ends: 638 [2024-11-23 22:55:06,241 INFO L226 Difference]: Without dead ends: 548 [2024-11-23 22:55:06,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2024-11-23 22:55:06,242 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 625 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:55:06,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 870 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 22:55:06,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-23 22:55:06,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 419. [2024-11-23 22:55:06,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 302 states have (on average 1.281456953642384) internal successors, (387), 302 states have internal predecessors, (387), 100 states have call successors, (100), 16 states have call predecessors, (100), 16 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:55:06,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 587 transitions. [2024-11-23 22:55:06,309 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 587 transitions. Word has length 167 [2024-11-23 22:55:06,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:55:06,309 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 587 transitions. [2024-11-23 22:55:06,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-23 22:55:06,310 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 587 transitions. [2024-11-23 22:55:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-23 22:55:06,312 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:55:06,312 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:06,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 22:55:06,312 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:55:06,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1978350146, now seen corresponding path program 1 times [2024-11-23 22:55:06,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:06,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319195204] [2024-11-23 22:55:06,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:06,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:30,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:55:30,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:30,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319195204] [2024-11-23 22:55:30,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319195204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:55:30,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:55:30,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 22:55:30,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822690645] [2024-11-23 22:55:30,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:55:30,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 22:55:30,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:30,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 22:55:30,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:55:30,944 INFO L87 Difference]: Start difference. First operand 419 states and 587 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:55:35,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:55:35,117 INFO L93 Difference]: Finished difference Result 877 states and 1204 transitions. [2024-11-23 22:55:35,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-23 22:55:35,119 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 167 [2024-11-23 22:55:35,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:55:35,122 INFO L225 Difference]: With dead ends: 877 [2024-11-23 22:55:35,123 INFO L226 Difference]: Without dead ends: 679 [2024-11-23 22:55:35,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=351, Invalid=839, Unknown=0, NotChecked=0, Total=1190 [2024-11-23 22:55:35,126 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 698 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:55:35,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1006 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 22:55:35,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-11-23 22:55:35,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 431. [2024-11-23 22:55:35,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 313 states have (on average 1.2779552715654952) internal successors, (400), 313 states have internal predecessors, (400), 100 states have call successors, (100), 17 states have call predecessors, (100), 17 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:55:35,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 600 transitions. [2024-11-23 22:55:35,193 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 600 transitions. Word has length 167 [2024-11-23 22:55:35,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:55:35,193 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 600 transitions. [2024-11-23 22:55:35,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:55:35,194 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 600 transitions. [2024-11-23 22:55:35,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-23 22:55:35,195 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:55:35,195 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:35,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 22:55:35,195 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:55:35,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:35,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1720184708, now seen corresponding path program 1 times [2024-11-23 22:55:35,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:35,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505628710] [2024-11-23 22:55:35,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:35,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:55:56,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:56,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505628710] [2024-11-23 22:55:56,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505628710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:55:56,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:55:56,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:55:56,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992198955] [2024-11-23 22:55:56,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:55:56,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:55:56,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:56,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:55:56,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:55:56,383 INFO L87 Difference]: Start difference. First operand 431 states and 600 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:55:58,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:55:58,503 INFO L93 Difference]: Finished difference Result 840 states and 1169 transitions. [2024-11-23 22:55:58,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:55:58,504 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 167 [2024-11-23 22:55:58,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:55:58,507 INFO L225 Difference]: With dead ends: 840 [2024-11-23 22:55:58,508 INFO L226 Difference]: Without dead ends: 630 [2024-11-23 22:55:58,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2024-11-23 22:55:58,510 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 398 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:55:58,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 725 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 22:55:58,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2024-11-23 22:55:58,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 540. [2024-11-23 22:55:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 392 states have (on average 1.278061224489796) internal successors, (501), 392 states have internal predecessors, (501), 125 states have call successors, (125), 22 states have call predecessors, (125), 22 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) [2024-11-23 22:55:58,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 751 transitions. [2024-11-23 22:55:58,589 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 751 transitions. Word has length 167 [2024-11-23 22:55:58,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:55:58,589 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 751 transitions. [2024-11-23 22:55:58,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:55:58,590 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 751 transitions. [2024-11-23 22:55:58,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 22:55:58,591 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:55:58,591 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:58,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 22:55:58,592 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:55:58,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:58,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1119595325, now seen corresponding path program 1 times [2024-11-23 22:55:58,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:58,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571834624] [2024-11-23 22:55:58,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:58,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:55:58,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:58,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571834624] [2024-11-23 22:55:58,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571834624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:55:58,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:55:58,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:55:58,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269231516] [2024-11-23 22:55:58,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:55:58,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:55:58,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:58,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:55:58,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:55:58,715 INFO L87 Difference]: Start difference. First operand 540 states and 751 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:55:58,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:55:58,912 INFO L93 Difference]: Finished difference Result 1148 states and 1584 transitions. [2024-11-23 22:55:58,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:55:58,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 168 [2024-11-23 22:55:58,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:55:58,917 INFO L225 Difference]: With dead ends: 1148 [2024-11-23 22:55:58,917 INFO L226 Difference]: Without dead ends: 702 [2024-11-23 22:55:58,918 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 22:55:58,919 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 39 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:55:58,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 396 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:55:58,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2024-11-23 22:55:59,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 688. [2024-11-23 22:55:59,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 517 states have (on average 1.264990328820116) internal successors, (654), 521 states have internal predecessors, (654), 141 states have call successors, (141), 29 states have call predecessors, (141), 29 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2024-11-23 22:55:59,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 936 transitions. [2024-11-23 22:55:59,018 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 936 transitions. Word has length 168 [2024-11-23 22:55:59,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:55:59,021 INFO L471 AbstractCegarLoop]: Abstraction has 688 states and 936 transitions. [2024-11-23 22:55:59,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:55:59,021 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 936 transitions. [2024-11-23 22:55:59,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 22:55:59,022 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:55:59,023 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:59,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 22:55:59,023 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:55:59,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1706401339, now seen corresponding path program 1 times [2024-11-23 22:55:59,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:59,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172669579] [2024-11-23 22:55:59,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:59,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:57:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:57:08,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:57:08,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172669579] [2024-11-23 22:57:08,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172669579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:57:08,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:57:08,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 22:57:08,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105534136] [2024-11-23 22:57:08,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:57:08,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 22:57:08,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:57:08,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 22:57:08,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:57:08,013 INFO L87 Difference]: Start difference. First operand 688 states and 936 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-23 22:57:12,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:57:12,108 INFO L93 Difference]: Finished difference Result 1080 states and 1471 transitions. [2024-11-23 22:57:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 22:57:12,108 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 168 [2024-11-23 22:57:12,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:57:12,115 INFO L225 Difference]: With dead ends: 1080 [2024-11-23 22:57:12,115 INFO L226 Difference]: Without dead ends: 960 [2024-11-23 22:57:12,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=209, Invalid=661, Unknown=0, NotChecked=0, Total=870 [2024-11-23 22:57:12,116 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 556 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:57:12,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 976 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-23 22:57:12,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2024-11-23 22:57:12,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 695. [2024-11-23 22:57:12,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 524 states have (on average 1.2690839694656488) internal successors, (665), 528 states have internal predecessors, (665), 141 states have call successors, (141), 29 states have call predecessors, (141), 29 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2024-11-23 22:57:12,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 947 transitions. [2024-11-23 22:57:12,225 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 947 transitions. Word has length 168 [2024-11-23 22:57:12,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:57:12,226 INFO L471 AbstractCegarLoop]: Abstraction has 695 states and 947 transitions. [2024-11-23 22:57:12,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-23 22:57:12,226 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 947 transitions. [2024-11-23 22:57:12,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 22:57:12,227 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:57:12,227 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:12,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 22:57:12,228 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:57:12,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:57:12,228 INFO L85 PathProgramCache]: Analyzing trace with hash -274973573, now seen corresponding path program 1 times [2024-11-23 22:57:12,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:57:12,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141631630] [2024-11-23 22:57:12,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:57:12,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:57:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:57:27,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:57:27,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:57:27,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141631630] [2024-11-23 22:57:27,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141631630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:57:27,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:57:27,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:57:27,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713902226] [2024-11-23 22:57:27,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:57:27,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:57:27,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:57:27,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:57:27,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:57:27,172 INFO L87 Difference]: Start difference. First operand 695 states and 947 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:57:28,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:57:28,423 INFO L93 Difference]: Finished difference Result 1385 states and 1883 transitions. [2024-11-23 22:57:28,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:57:28,424 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 168 [2024-11-23 22:57:28,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:57:28,428 INFO L225 Difference]: With dead ends: 1385 [2024-11-23 22:57:28,428 INFO L226 Difference]: Without dead ends: 941 [2024-11-23 22:57:28,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:57:28,429 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 288 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:57:28,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 857 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:57:28,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2024-11-23 22:57:28,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 693. [2024-11-23 22:57:28,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 522 states have (on average 1.2681992337164751) internal successors, (662), 526 states have internal predecessors, (662), 141 states have call successors, (141), 29 states have call predecessors, (141), 29 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2024-11-23 22:57:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 944 transitions. [2024-11-23 22:57:28,530 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 944 transitions. Word has length 168 [2024-11-23 22:57:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:57:28,530 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 944 transitions. [2024-11-23 22:57:28,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:57:28,530 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 944 transitions. [2024-11-23 22:57:28,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 22:57:28,532 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:57:28,532 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:28,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 22:57:28,532 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:57:28,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:57:28,532 INFO L85 PathProgramCache]: Analyzing trace with hash 17457597, now seen corresponding path program 1 times [2024-11-23 22:57:28,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:57:28,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503708699] [2024-11-23 22:57:28,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:57:28,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:57:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:57:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:57:49,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:57:49,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503708699] [2024-11-23 22:57:49,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503708699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:57:49,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:57:49,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 22:57:49,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742560598] [2024-11-23 22:57:49,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:57:49,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 22:57:49,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:57:49,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 22:57:49,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:57:49,492 INFO L87 Difference]: Start difference. First operand 693 states and 944 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-23 22:57:55,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:57:55,597 INFO L93 Difference]: Finished difference Result 1059 states and 1444 transitions. [2024-11-23 22:57:55,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 22:57:55,598 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 168 [2024-11-23 22:57:55,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:57:55,602 INFO L225 Difference]: With dead ends: 1059 [2024-11-23 22:57:55,603 INFO L226 Difference]: Without dead ends: 787 [2024-11-23 22:57:55,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-11-23 22:57:55,605 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 594 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:57:55,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 773 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-23 22:57:55,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2024-11-23 22:57:55,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 683. [2024-11-23 22:57:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 516 states have (on average 1.2732558139534884) internal successors, (657), 519 states have internal predecessors, (657), 137 states have call successors, (137), 29 states have call predecessors, (137), 29 states have return successors, (137), 134 states have call predecessors, (137), 137 states have call successors, (137) [2024-11-23 22:57:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 931 transitions. [2024-11-23 22:57:55,714 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 931 transitions. Word has length 168 [2024-11-23 22:57:55,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:57:55,714 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 931 transitions. [2024-11-23 22:57:55,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 3 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-23 22:57:55,715 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 931 transitions. [2024-11-23 22:57:55,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 22:57:55,716 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:57:55,716 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:55,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 22:57:55,716 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:57:55,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:57:55,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1792464959, now seen corresponding path program 1 times [2024-11-23 22:57:55,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:57:55,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864505722] [2024-11-23 22:57:55,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:57:55,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:57:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:57:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:57:58,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:57:58,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864505722] [2024-11-23 22:57:58,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864505722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:57:58,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:57:58,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:57:58,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707333831] [2024-11-23 22:57:58,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:57:58,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:57:58,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:57:58,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:57:58,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:57:58,014 INFO L87 Difference]: Start difference. First operand 683 states and 931 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:57:58,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:57:58,869 INFO L93 Difference]: Finished difference Result 1096 states and 1510 transitions. [2024-11-23 22:57:58,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:57:58,870 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 168 [2024-11-23 22:57:58,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:57:58,875 INFO L225 Difference]: With dead ends: 1096 [2024-11-23 22:57:58,875 INFO L226 Difference]: Without dead ends: 976 [2024-11-23 22:57:58,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:57:58,878 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 277 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:57:58,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 543 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 22:57:58,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2024-11-23 22:57:58,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 722. [2024-11-23 22:57:58,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 555 states have (on average 1.29009009009009) internal successors, (716), 558 states have internal predecessors, (716), 137 states have call successors, (137), 29 states have call predecessors, (137), 29 states have return successors, (137), 134 states have call predecessors, (137), 137 states have call successors, (137) [2024-11-23 22:57:58,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 990 transitions. [2024-11-23 22:57:58,995 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 990 transitions. Word has length 168 [2024-11-23 22:57:58,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:57:58,996 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 990 transitions. [2024-11-23 22:57:58,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:57:58,996 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 990 transitions. [2024-11-23 22:57:58,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 22:57:58,997 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:57:58,997 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:58,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 22:57:58,998 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:57:58,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:57:58,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1270352065, now seen corresponding path program 1 times [2024-11-23 22:57:58,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:57:58,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597075168] [2024-11-23 22:57:58,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:57:58,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:57:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:57:59,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:57:59,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:57:59,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597075168] [2024-11-23 22:57:59,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597075168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:57:59,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:57:59,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:57:59,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087039694] [2024-11-23 22:57:59,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:57:59,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:57:59,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:57:59,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:57:59,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:57:59,199 INFO L87 Difference]: Start difference. First operand 722 states and 990 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:57:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:57:59,387 INFO L93 Difference]: Finished difference Result 949 states and 1307 transitions. [2024-11-23 22:57:59,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:57:59,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 168 [2024-11-23 22:57:59,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:57:59,392 INFO L225 Difference]: With dead ends: 949 [2024-11-23 22:57:59,392 INFO L226 Difference]: Without dead ends: 813 [2024-11-23 22:57:59,393 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 22:57:59,393 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 48 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:57:59,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 388 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:57:59,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2024-11-23 22:57:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 798. [2024-11-23 22:57:59,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 616 states have (on average 1.2840909090909092) internal successors, (791), 621 states have internal predecessors, (791), 149 states have call successors, (149), 32 states have call predecessors, (149), 32 states have return successors, (149), 144 states have call predecessors, (149), 149 states have call successors, (149) [2024-11-23 22:57:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1089 transitions. [2024-11-23 22:57:59,513 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1089 transitions. Word has length 168 [2024-11-23 22:57:59,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:57:59,514 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 1089 transitions. [2024-11-23 22:57:59,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:57:59,514 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1089 transitions. [2024-11-23 22:57:59,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 22:57:59,515 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:57:59,516 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:59,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 22:57:59,516 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:57:59,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:57:59,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1663379075, now seen corresponding path program 1 times [2024-11-23 22:57:59,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:57:59,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589994453] [2024-11-23 22:57:59,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:57:59,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:57:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:58:16,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:16,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589994453] [2024-11-23 22:58:16,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589994453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:16,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:16,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:58:16,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552521480] [2024-11-23 22:58:16,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:16,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:58:16,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:16,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:58:16,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:58:16,291 INFO L87 Difference]: Start difference. First operand 798 states and 1089 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:58:18,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:18,536 INFO L93 Difference]: Finished difference Result 1272 states and 1732 transitions. [2024-11-23 22:58:18,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 22:58:18,537 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 168 [2024-11-23 22:58:18,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:18,541 INFO L225 Difference]: With dead ends: 1272 [2024-11-23 22:58:18,541 INFO L226 Difference]: Without dead ends: 1077 [2024-11-23 22:58:18,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2024-11-23 22:58:18,542 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 447 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:18,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 992 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 22:58:18,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2024-11-23 22:58:18,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 834. [2024-11-23 22:58:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 652 states have (on average 1.299079754601227) internal successors, (847), 657 states have internal predecessors, (847), 149 states have call successors, (149), 32 states have call predecessors, (149), 32 states have return successors, (149), 144 states have call predecessors, (149), 149 states have call successors, (149) [2024-11-23 22:58:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1145 transitions. [2024-11-23 22:58:18,676 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1145 transitions. Word has length 168 [2024-11-23 22:58:18,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:18,677 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1145 transitions. [2024-11-23 22:58:18,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:58:18,677 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1145 transitions. [2024-11-23 22:58:18,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 22:58:18,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:18,678 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:18,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 22:58:18,679 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:18,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:18,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1963917315, now seen corresponding path program 1 times [2024-11-23 22:58:18,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:18,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738175087] [2024-11-23 22:58:18,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:18,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:38,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:58:38,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:38,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738175087] [2024-11-23 22:58:38,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738175087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:38,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:38,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 22:58:38,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931859968] [2024-11-23 22:58:38,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:38,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:58:38,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:38,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:58:38,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:58:38,305 INFO L87 Difference]: Start difference. First operand 834 states and 1145 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:58:40,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:40,328 INFO L93 Difference]: Finished difference Result 1523 states and 2080 transitions. [2024-11-23 22:58:40,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:58:40,328 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 168 [2024-11-23 22:58:40,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:40,332 INFO L225 Difference]: With dead ends: 1523 [2024-11-23 22:58:40,332 INFO L226 Difference]: Without dead ends: 977 [2024-11-23 22:58:40,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2024-11-23 22:58:40,335 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 288 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:40,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 844 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 22:58:40,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2024-11-23 22:58:40,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 834. [2024-11-23 22:58:40,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 652 states have (on average 1.299079754601227) internal successors, (847), 657 states have internal predecessors, (847), 149 states have call successors, (149), 32 states have call predecessors, (149), 32 states have return successors, (149), 144 states have call predecessors, (149), 149 states have call successors, (149) [2024-11-23 22:58:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1145 transitions. [2024-11-23 22:58:40,468 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1145 transitions. Word has length 168 [2024-11-23 22:58:40,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:40,468 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1145 transitions. [2024-11-23 22:58:40,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:58:40,469 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1145 transitions. [2024-11-23 22:58:40,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 22:58:40,470 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:40,470 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:40,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 22:58:40,471 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:40,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:40,471 INFO L85 PathProgramCache]: Analyzing trace with hash -188909953, now seen corresponding path program 1 times [2024-11-23 22:58:40,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:40,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98268249] [2024-11-23 22:58:40,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:40,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:58:50,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:50,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98268249] [2024-11-23 22:58:50,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98268249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:50,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:50,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-23 22:58:50,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199420097] [2024-11-23 22:58:50,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:50,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 22:58:50,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:50,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 22:58:50,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:58:50,030 INFO L87 Difference]: Start difference. First operand 834 states and 1145 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 4 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2024-11-23 22:58:56,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:56,120 INFO L93 Difference]: Finished difference Result 1834 states and 2486 transitions. [2024-11-23 22:58:56,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-23 22:58:56,120 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 4 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 168 [2024-11-23 22:58:56,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:56,124 INFO L225 Difference]: With dead ends: 1834 [2024-11-23 22:58:56,124 INFO L226 Difference]: Without dead ends: 1288 [2024-11-23 22:58:56,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=339, Invalid=993, Unknown=0, NotChecked=0, Total=1332 [2024-11-23 22:58:56,126 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 539 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 2451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:56,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 1432 Invalid, 2451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-23 22:58:56,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2024-11-23 22:58:56,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 843. [2024-11-23 22:58:56,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 661 states have (on average 1.302571860816944) internal successors, (861), 666 states have internal predecessors, (861), 149 states have call successors, (149), 32 states have call predecessors, (149), 32 states have return successors, (149), 144 states have call predecessors, (149), 149 states have call successors, (149) [2024-11-23 22:58:56,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1159 transitions. [2024-11-23 22:58:56,259 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1159 transitions. Word has length 168 [2024-11-23 22:58:56,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:56,259 INFO L471 AbstractCegarLoop]: Abstraction has 843 states and 1159 transitions. [2024-11-23 22:58:56,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 4 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2024-11-23 22:58:56,260 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1159 transitions. [2024-11-23 22:58:56,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-23 22:58:56,261 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:56,261 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:56,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 22:58:56,262 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:56,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:56,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1043240319, now seen corresponding path program 1 times [2024-11-23 22:58:56,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:56,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015854981] [2024-11-23 22:58:56,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:56,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:59:06,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:06,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015854981] [2024-11-23 22:59:06,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015854981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:06,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:06,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:59:06,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380160258] [2024-11-23 22:59:06,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:06,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:59:06,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:06,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:59:06,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:59:06,833 INFO L87 Difference]: Start difference. First operand 843 states and 1159 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:59:07,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:07,587 INFO L93 Difference]: Finished difference Result 1550 states and 2119 transitions. [2024-11-23 22:59:07,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:59:07,588 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 168 [2024-11-23 22:59:07,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:07,592 INFO L225 Difference]: With dead ends: 1550 [2024-11-23 22:59:07,592 INFO L226 Difference]: Without dead ends: 995 [2024-11-23 22:59:07,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:59:07,593 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 226 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:07,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 702 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 22:59:07,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2024-11-23 22:59:07,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 830. [2024-11-23 22:59:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 648 states have (on average 1.2978395061728396) internal successors, (841), 653 states have internal predecessors, (841), 149 states have call successors, (149), 32 states have call predecessors, (149), 32 states have return successors, (149), 144 states have call predecessors, (149), 149 states have call successors, (149) [2024-11-23 22:59:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1139 transitions. [2024-11-23 22:59:07,718 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1139 transitions. Word has length 168 [2024-11-23 22:59:07,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:07,718 INFO L471 AbstractCegarLoop]: Abstraction has 830 states and 1139 transitions. [2024-11-23 22:59:07,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:59:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1139 transitions. [2024-11-23 22:59:07,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 22:59:07,720 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:07,720 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:59:07,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 22:59:07,720 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:07,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:07,721 INFO L85 PathProgramCache]: Analyzing trace with hash -177436545, now seen corresponding path program 1 times [2024-11-23 22:59:07,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:07,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902151601] [2024-11-23 22:59:07,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:07,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:59:24,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:24,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902151601] [2024-11-23 22:59:24,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902151601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:24,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:24,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 22:59:24,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977884666] [2024-11-23 22:59:24,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:24,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 22:59:24,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:24,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 22:59:24,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:59:24,167 INFO L87 Difference]: Start difference. First operand 830 states and 1139 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:59:27,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:27,524 INFO L93 Difference]: Finished difference Result 1495 states and 2036 transitions. [2024-11-23 22:59:27,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 22:59:27,524 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 169 [2024-11-23 22:59:27,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:27,529 INFO L225 Difference]: With dead ends: 1495 [2024-11-23 22:59:27,529 INFO L226 Difference]: Without dead ends: 1300 [2024-11-23 22:59:27,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2024-11-23 22:59:27,530 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 494 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:27,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 943 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 22:59:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2024-11-23 22:59:27,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 838. [2024-11-23 22:59:27,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 656 states have (on average 1.298780487804878) internal successors, (852), 661 states have internal predecessors, (852), 149 states have call successors, (149), 32 states have call predecessors, (149), 32 states have return successors, (149), 144 states have call predecessors, (149), 149 states have call successors, (149) [2024-11-23 22:59:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1150 transitions. [2024-11-23 22:59:27,664 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1150 transitions. Word has length 169 [2024-11-23 22:59:27,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:27,665 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1150 transitions. [2024-11-23 22:59:27,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:59:27,665 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1150 transitions. [2024-11-23 22:59:27,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-23 22:59:27,667 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:27,667 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:59:27,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 22:59:27,667 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:27,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:27,668 INFO L85 PathProgramCache]: Analyzing trace with hash 822827907, now seen corresponding path program 1 times [2024-11-23 22:59:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:27,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864269266] [2024-11-23 22:59:27,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:27,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:38,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:59:38,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:38,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864269266] [2024-11-23 22:59:38,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864269266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:38,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:38,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-23 22:59:38,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149204458] [2024-11-23 22:59:38,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:38,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:59:38,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:38,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:59:38,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:59:38,169 INFO L87 Difference]: Start difference. First operand 838 states and 1150 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:59:40,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:40,400 INFO L93 Difference]: Finished difference Result 1126 states and 1549 transitions. [2024-11-23 22:59:40,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:59:40,401 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 169 [2024-11-23 22:59:40,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:40,404 INFO L225 Difference]: With dead ends: 1126 [2024-11-23 22:59:40,404 INFO L226 Difference]: Without dead ends: 931 [2024-11-23 22:59:40,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2024-11-23 22:59:40,409 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 381 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:40,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 607 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 22:59:40,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2024-11-23 22:59:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 806. [2024-11-23 22:59:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 624 states have (on average 1.2868589743589745) internal successors, (803), 629 states have internal predecessors, (803), 149 states have call successors, (149), 32 states have call predecessors, (149), 32 states have return successors, (149), 144 states have call predecessors, (149), 149 states have call successors, (149) [2024-11-23 22:59:40,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1101 transitions. [2024-11-23 22:59:40,551 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1101 transitions. Word has length 169 [2024-11-23 22:59:40,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:40,552 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1101 transitions. [2024-11-23 22:59:40,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 22:59:40,552 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1101 transitions. [2024-11-23 22:59:40,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 22:59:40,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:40,554 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:59:40,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 22:59:40,554 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:40,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:40,555 INFO L85 PathProgramCache]: Analyzing trace with hash -138103504, now seen corresponding path program 1 times [2024-11-23 22:59:40,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:40,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808699468] [2024-11-23 22:59:40,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:40,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:59:44,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:44,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808699468] [2024-11-23 22:59:44,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808699468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:44,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:44,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:59:44,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705081598] [2024-11-23 22:59:44,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:44,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:59:44,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:44,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:59:44,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:59:44,225 INFO L87 Difference]: Start difference. First operand 806 states and 1101 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:59:45,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:45,721 INFO L93 Difference]: Finished difference Result 1285 states and 1760 transitions. [2024-11-23 22:59:45,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:59:45,725 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 170 [2024-11-23 22:59:45,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:45,730 INFO L225 Difference]: With dead ends: 1285 [2024-11-23 22:59:45,730 INFO L226 Difference]: Without dead ends: 1090 [2024-11-23 22:59:45,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:59:45,733 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 290 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:45,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 1312 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 22:59:45,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2024-11-23 22:59:45,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 896. [2024-11-23 22:59:45,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 708 states have (on average 1.2838983050847457) internal successors, (909), 715 states have internal predecessors, (909), 153 states have call successors, (153), 34 states have call predecessors, (153), 34 states have return successors, (153), 146 states have call predecessors, (153), 153 states have call successors, (153) [2024-11-23 22:59:45,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1215 transitions. [2024-11-23 22:59:45,850 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1215 transitions. Word has length 170 [2024-11-23 22:59:45,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:45,851 INFO L471 AbstractCegarLoop]: Abstraction has 896 states and 1215 transitions. [2024-11-23 22:59:45,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:59:45,851 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1215 transitions. [2024-11-23 22:59:45,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 22:59:45,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:45,853 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:59:45,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-23 22:59:45,853 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:45,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:45,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1452665808, now seen corresponding path program 1 times [2024-11-23 22:59:45,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:45,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395789925] [2024-11-23 22:59:45,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:45,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:48,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:59:48,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:48,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395789925] [2024-11-23 22:59:48,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395789925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:48,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:48,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 22:59:48,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282134704] [2024-11-23 22:59:48,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:48,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 22:59:48,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:48,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 22:59:48,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:59:48,997 INFO L87 Difference]: Start difference. First operand 896 states and 1215 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:59:49,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:49,854 INFO L93 Difference]: Finished difference Result 1186 states and 1570 transitions. [2024-11-23 22:59:49,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:59:49,855 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 170 [2024-11-23 22:59:49,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:49,859 INFO L225 Difference]: With dead ends: 1186 [2024-11-23 22:59:49,860 INFO L226 Difference]: Without dead ends: 1184 [2024-11-23 22:59:49,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:59:49,861 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 90 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:49,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 1173 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 22:59:49,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2024-11-23 22:59:49,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 949. [2024-11-23 22:59:49,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 761 states have (on average 1.2838370565045991) internal successors, (977), 768 states have internal predecessors, (977), 153 states have call successors, (153), 34 states have call predecessors, (153), 34 states have return successors, (153), 146 states have call predecessors, (153), 153 states have call successors, (153) [2024-11-23 22:59:49,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1283 transitions. [2024-11-23 22:59:49,974 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1283 transitions. Word has length 170 [2024-11-23 22:59:49,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:49,975 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1283 transitions. [2024-11-23 22:59:49,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:59:49,975 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1283 transitions. [2024-11-23 22:59:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 22:59:49,976 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:49,976 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:59:49,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-23 22:59:49,976 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:49,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:49,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1141760174, now seen corresponding path program 1 times [2024-11-23 22:59:49,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:49,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456702245] [2024-11-23 22:59:49,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:49,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:59:51,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:51,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456702245] [2024-11-23 22:59:51,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456702245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:51,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:51,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:59:51,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476588147] [2024-11-23 22:59:51,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:51,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:59:51,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:51,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:59:51,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:59:51,743 INFO L87 Difference]: Start difference. First operand 949 states and 1283 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:59:53,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:53,204 INFO L93 Difference]: Finished difference Result 1306 states and 1765 transitions. [2024-11-23 22:59:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:59:53,205 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 170 [2024-11-23 22:59:53,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:53,210 INFO L225 Difference]: With dead ends: 1306 [2024-11-23 22:59:53,210 INFO L226 Difference]: Without dead ends: 1304 [2024-11-23 22:59:53,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-11-23 22:59:53,212 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 241 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:53,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1306 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 22:59:53,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2024-11-23 22:59:53,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1072. [2024-11-23 22:59:53,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 861 states have (on average 1.2845528455284554) internal successors, (1106), 871 states have internal predecessors, (1106), 173 states have call successors, (173), 37 states have call predecessors, (173), 37 states have return successors, (173), 163 states have call predecessors, (173), 173 states have call successors, (173) [2024-11-23 22:59:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1452 transitions. [2024-11-23 22:59:53,366 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1452 transitions. Word has length 170 [2024-11-23 22:59:53,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:53,366 INFO L471 AbstractCegarLoop]: Abstraction has 1072 states and 1452 transitions. [2024-11-23 22:59:53,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:59:53,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1452 transitions. [2024-11-23 22:59:53,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 22:59:53,368 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:53,368 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:59:53,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-23 22:59:53,369 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:53,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:53,369 INFO L85 PathProgramCache]: Analyzing trace with hash -172802130, now seen corresponding path program 1 times [2024-11-23 22:59:53,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:53,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847033012] [2024-11-23 22:59:53,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:53,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:59:54,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:54,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847033012] [2024-11-23 22:59:54,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847033012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:54,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:54,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:59:54,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301783784] [2024-11-23 22:59:54,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:54,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:59:54,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:54,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:59:54,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:59:54,957 INFO L87 Difference]: Start difference. First operand 1072 states and 1452 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:59:56,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:56,526 INFO L93 Difference]: Finished difference Result 1540 states and 2065 transitions. [2024-11-23 22:59:56,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-23 22:59:56,526 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 170 [2024-11-23 22:59:56,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:56,530 INFO L225 Difference]: With dead ends: 1540 [2024-11-23 22:59:56,530 INFO L226 Difference]: Without dead ends: 1538 [2024-11-23 22:59:56,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2024-11-23 22:59:56,532 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 160 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:56,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1748 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 22:59:56,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2024-11-23 22:59:56,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1187. [2024-11-23 22:59:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 953 states have (on average 1.2843651626442811) internal successors, (1224), 965 states have internal predecessors, (1224), 191 states have call successors, (191), 42 states have call predecessors, (191), 42 states have return successors, (191), 179 states have call predecessors, (191), 191 states have call successors, (191) [2024-11-23 22:59:56,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1606 transitions. [2024-11-23 22:59:56,704 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1606 transitions. Word has length 170 [2024-11-23 22:59:56,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:56,705 INFO L471 AbstractCegarLoop]: Abstraction has 1187 states and 1606 transitions. [2024-11-23 22:59:56,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 22:59:56,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1606 transitions. [2024-11-23 22:59:56,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 22:59:56,706 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:56,706 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:59:56,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-23 22:59:56,707 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:56,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:56,707 INFO L85 PathProgramCache]: Analyzing trace with hash 85363308, now seen corresponding path program 1 times [2024-11-23 22:59:56,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:56,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330826778] [2024-11-23 22:59:56,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:56,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 22:59:59,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:59,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330826778] [2024-11-23 22:59:59,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330826778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:59,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:59,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 22:59:59,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155148714] [2024-11-23 22:59:59,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:59,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 22:59:59,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:59,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 22:59:59,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:59:59,256 INFO L87 Difference]: Start difference. First operand 1187 states and 1606 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 23:00:02,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:02,265 INFO L93 Difference]: Finished difference Result 1493 states and 2018 transitions. [2024-11-23 23:00:02,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 23:00:02,265 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 170 [2024-11-23 23:00:02,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:02,269 INFO L225 Difference]: With dead ends: 1493 [2024-11-23 23:00:02,269 INFO L226 Difference]: Without dead ends: 1491 [2024-11-23 23:00:02,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=170, Invalid=586, Unknown=0, NotChecked=0, Total=756 [2024-11-23 23:00:02,270 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 288 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:02,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1397 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 23:00:02,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2024-11-23 23:00:02,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1202. [2024-11-23 23:00:02,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 968 states have (on average 1.2913223140495869) internal successors, (1250), 980 states have internal predecessors, (1250), 191 states have call successors, (191), 42 states have call predecessors, (191), 42 states have return successors, (191), 179 states have call predecessors, (191), 191 states have call successors, (191) [2024-11-23 23:00:02,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1632 transitions. [2024-11-23 23:00:02,411 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1632 transitions. Word has length 170 [2024-11-23 23:00:02,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:02,411 INFO L471 AbstractCegarLoop]: Abstraction has 1202 states and 1632 transitions. [2024-11-23 23:00:02,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 23:00:02,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1632 transitions. [2024-11-23 23:00:02,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 23:00:02,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:02,412 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:00:02,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-23 23:00:02,413 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:02,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:02,413 INFO L85 PathProgramCache]: Analyzing trace with hash -660634014, now seen corresponding path program 1 times [2024-11-23 23:00:02,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:02,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785526825] [2024-11-23 23:00:02,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:02,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:44,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 23:00:44,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:44,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785526825] [2024-11-23 23:00:44,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785526825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:44,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:44,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 23:00:44,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816847081] [2024-11-23 23:00:44,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:44,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 23:00:44,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:44,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 23:00:44,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:00:44,849 INFO L87 Difference]: Start difference. First operand 1202 states and 1632 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 23:00:46,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:46,443 INFO L93 Difference]: Finished difference Result 2378 states and 3203 transitions. [2024-11-23 23:00:46,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:00:46,444 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 170 [2024-11-23 23:00:46,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:46,451 INFO L225 Difference]: With dead ends: 2378 [2024-11-23 23:00:46,451 INFO L226 Difference]: Without dead ends: 1890 [2024-11-23 23:00:46,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:00:46,453 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 417 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:46,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 707 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 23:00:46,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2024-11-23 23:00:46,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1214. [2024-11-23 23:00:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 980 states have (on average 1.2918367346938775) internal successors, (1266), 992 states have internal predecessors, (1266), 191 states have call successors, (191), 42 states have call predecessors, (191), 42 states have return successors, (191), 179 states have call predecessors, (191), 191 states have call successors, (191) [2024-11-23 23:00:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1648 transitions. [2024-11-23 23:00:46,689 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1648 transitions. Word has length 170 [2024-11-23 23:00:46,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:46,690 INFO L471 AbstractCegarLoop]: Abstraction has 1214 states and 1648 transitions. [2024-11-23 23:00:46,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 23:00:46,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1648 transitions. [2024-11-23 23:00:46,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 23:00:46,691 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:46,692 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:00:46,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-23 23:00:46,692 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:46,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:46,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2082288477, now seen corresponding path program 1 times [2024-11-23 23:00:46,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:46,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816300505] [2024-11-23 23:00:46,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:46,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:46,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 23:00:46,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:46,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816300505] [2024-11-23 23:00:46,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816300505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:46,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:46,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:00:46,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587089614] [2024-11-23 23:00:46,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:46,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:00:46,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:46,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:00:46,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:00:46,774 INFO L87 Difference]: Start difference. First operand 1214 states and 1648 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 23:00:47,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:47,110 INFO L93 Difference]: Finished difference Result 3015 states and 4066 transitions. [2024-11-23 23:00:47,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:00:47,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 170 [2024-11-23 23:00:47,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:47,119 INFO L225 Difference]: With dead ends: 3015 [2024-11-23 23:00:47,119 INFO L226 Difference]: Without dead ends: 1904 [2024-11-23 23:00:47,122 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 23:00:47,122 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 52 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:47,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 246 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:00:47,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2024-11-23 23:00:47,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1827. [2024-11-23 23:00:47,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1502 states have (on average 1.2676431424766976) internal successors, (1904), 1528 states have internal predecessors, (1904), 259 states have call successors, (259), 65 states have call predecessors, (259), 65 states have return successors, (259), 233 states have call predecessors, (259), 259 states have call successors, (259) [2024-11-23 23:00:47,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2422 transitions. [2024-11-23 23:00:47,522 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2422 transitions. Word has length 170 [2024-11-23 23:00:47,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:47,522 INFO L471 AbstractCegarLoop]: Abstraction has 1827 states and 2422 transitions. [2024-11-23 23:00:47,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 23:00:47,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2422 transitions. [2024-11-23 23:00:47,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 23:00:47,524 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:47,524 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:00:47,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-23 23:00:47,524 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:47,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:47,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1568881808, now seen corresponding path program 1 times [2024-11-23 23:00:47,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:47,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322331669] [2024-11-23 23:00:47,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:47,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 23:00:53,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:53,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322331669] [2024-11-23 23:00:53,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322331669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:00:53,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:00:53,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-23 23:00:53,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368609654] [2024-11-23 23:00:53,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:00:53,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 23:00:53,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:53,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 23:00:53,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:00:53,848 INFO L87 Difference]: Start difference. First operand 1827 states and 2422 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 23:00:57,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:57,482 INFO L93 Difference]: Finished difference Result 2940 states and 3825 transitions. [2024-11-23 23:00:57,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 23:00:57,483 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 170 [2024-11-23 23:00:57,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:57,490 INFO L225 Difference]: With dead ends: 2940 [2024-11-23 23:00:57,490 INFO L226 Difference]: Without dead ends: 2938 [2024-11-23 23:00:57,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=267, Invalid=855, Unknown=0, NotChecked=0, Total=1122 [2024-11-23 23:00:57,492 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 442 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:57,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 928 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-23 23:00:57,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2024-11-23 23:00:57,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1829. [2024-11-23 23:00:57,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1504 states have (on average 1.2672872340425532) internal successors, (1906), 1530 states have internal predecessors, (1906), 259 states have call successors, (259), 65 states have call predecessors, (259), 65 states have return successors, (259), 233 states have call predecessors, (259), 259 states have call successors, (259) [2024-11-23 23:00:57,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2424 transitions. [2024-11-23 23:00:57,745 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2424 transitions. Word has length 170 [2024-11-23 23:00:57,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:57,745 INFO L471 AbstractCegarLoop]: Abstraction has 1829 states and 2424 transitions. [2024-11-23 23:00:57,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 23:00:57,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2424 transitions. [2024-11-23 23:00:57,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 23:00:57,747 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:57,747 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:00:57,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-23 23:00:57,747 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:57,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:57,748 INFO L85 PathProgramCache]: Analyzing trace with hash -289018130, now seen corresponding path program 1 times [2024-11-23 23:00:57,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:57,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670229486] [2024-11-23 23:00:57,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:57,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:01:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 23:01:00,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:01:00,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670229486] [2024-11-23 23:01:00,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670229486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:01:00,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:01:00,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-23 23:01:00,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090800837] [2024-11-23 23:01:00,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:01:00,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 23:01:00,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:01:00,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 23:01:00,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2024-11-23 23:01:00,566 INFO L87 Difference]: Start difference. First operand 1829 states and 2424 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 23:01:03,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:01:03,761 INFO L93 Difference]: Finished difference Result 2822 states and 3652 transitions. [2024-11-23 23:01:03,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 23:01:03,761 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 170 [2024-11-23 23:01:03,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:01:03,768 INFO L225 Difference]: With dead ends: 2822 [2024-11-23 23:01:03,769 INFO L226 Difference]: Without dead ends: 2820 [2024-11-23 23:01:03,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2024-11-23 23:01:03,770 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 349 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:01:03,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1167 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-23 23:01:03,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2820 states. [2024-11-23 23:01:04,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2820 to 1849. [2024-11-23 23:01:04,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1524 states have (on average 1.2696850393700787) internal successors, (1935), 1550 states have internal predecessors, (1935), 259 states have call successors, (259), 65 states have call predecessors, (259), 65 states have return successors, (259), 233 states have call predecessors, (259), 259 states have call successors, (259) [2024-11-23 23:01:04,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2453 transitions. [2024-11-23 23:01:04,050 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2453 transitions. Word has length 170 [2024-11-23 23:01:04,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:01:04,051 INFO L471 AbstractCegarLoop]: Abstraction has 1849 states and 2453 transitions. [2024-11-23 23:01:04,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 23:01:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2453 transitions. [2024-11-23 23:01:04,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 23:01:04,053 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:01:04,053 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:01:04,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-23 23:01:04,053 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:01:04,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:01:04,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1603580434, now seen corresponding path program 1 times [2024-11-23 23:01:04,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:01:04,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171269578] [2024-11-23 23:01:04,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:01:04,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:01:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:01:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 23:01:09,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:01:09,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171269578] [2024-11-23 23:01:09,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171269578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:01:09,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:01:09,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-23 23:01:09,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758598279] [2024-11-23 23:01:09,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:01:09,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:01:09,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:01:09,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:01:09,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:01:09,505 INFO L87 Difference]: Start difference. First operand 1849 states and 2453 transitions. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 23:01:14,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:01:14,609 INFO L93 Difference]: Finished difference Result 2995 states and 3892 transitions. [2024-11-23 23:01:14,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 23:01:14,609 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 170 [2024-11-23 23:01:14,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:01:14,619 INFO L225 Difference]: With dead ends: 2995 [2024-11-23 23:01:14,619 INFO L226 Difference]: Without dead ends: 2993 [2024-11-23 23:01:14,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=302, Invalid=1258, Unknown=0, NotChecked=0, Total=1560 [2024-11-23 23:01:14,621 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 403 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:01:14,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1443 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2071 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-23 23:01:14,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2024-11-23 23:01:15,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 1852. [2024-11-23 23:01:15,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1527 states have (on average 1.2698100851342502) internal successors, (1939), 1553 states have internal predecessors, (1939), 259 states have call successors, (259), 65 states have call predecessors, (259), 65 states have return successors, (259), 233 states have call predecessors, (259), 259 states have call successors, (259) [2024-11-23 23:01:15,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2457 transitions. [2024-11-23 23:01:15,076 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2457 transitions. Word has length 170 [2024-11-23 23:01:15,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:01:15,076 INFO L471 AbstractCegarLoop]: Abstraction has 1852 states and 2457 transitions. [2024-11-23 23:01:15,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 23:01:15,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2457 transitions. [2024-11-23 23:01:15,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 23:01:15,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:01:15,078 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:01:15,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-23 23:01:15,079 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:01:15,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:01:15,079 INFO L85 PathProgramCache]: Analyzing trace with hash -237932188, now seen corresponding path program 1 times [2024-11-23 23:01:15,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:01:15,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194091837] [2024-11-23 23:01:15,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:01:15,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:01:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:01:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 23:01:51,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:01:51,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194091837] [2024-11-23 23:01:51,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194091837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:01:51,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:01:51,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-23 23:01:51,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893323204] [2024-11-23 23:01:51,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:01:51,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 23:01:51,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:01:51,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 23:01:51,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:01:51,767 INFO L87 Difference]: Start difference. First operand 1852 states and 2457 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 23:01:59,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:01:59,134 INFO L93 Difference]: Finished difference Result 3036 states and 4007 transitions. [2024-11-23 23:01:59,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-23 23:01:59,134 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 170 [2024-11-23 23:01:59,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:01:59,139 INFO L225 Difference]: With dead ends: 3036 [2024-11-23 23:01:59,139 INFO L226 Difference]: Without dead ends: 2201 [2024-11-23 23:01:59,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2024-11-23 23:01:59,142 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 539 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 1691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:01:59,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 1028 Invalid, 1691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-23 23:01:59,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2201 states. [2024-11-23 23:01:59,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2201 to 1852. [2024-11-23 23:01:59,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1527 states have (on average 1.2698100851342502) internal successors, (1939), 1553 states have internal predecessors, (1939), 259 states have call successors, (259), 65 states have call predecessors, (259), 65 states have return successors, (259), 233 states have call predecessors, (259), 259 states have call successors, (259) [2024-11-23 23:01:59,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2457 transitions. [2024-11-23 23:01:59,436 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2457 transitions. Word has length 170 [2024-11-23 23:01:59,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:01:59,437 INFO L471 AbstractCegarLoop]: Abstraction has 1852 states and 2457 transitions. [2024-11-23 23:01:59,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 2 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-23 23:01:59,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2457 transitions. [2024-11-23 23:01:59,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 23:01:59,438 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:01:59,438 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:01:59,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-23 23:01:59,438 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:01:59,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:01:59,439 INFO L85 PathProgramCache]: Analyzing trace with hash 994218084, now seen corresponding path program 1 times [2024-11-23 23:01:59,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:01:59,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493658219] [2024-11-23 23:01:59,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:01:59,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:01:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:02:13,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-11-23 23:02:13,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:02:13,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493658219] [2024-11-23 23:02:13,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493658219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:02:13,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:02:13,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 23:02:13,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228742672] [2024-11-23 23:02:13,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:02:13,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 23:02:13,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:02:13,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 23:02:13,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-23 23:02:13,538 INFO L87 Difference]: Start difference. First operand 1852 states and 2457 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 23:02:15,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:02:15,800 INFO L93 Difference]: Finished difference Result 3656 states and 4784 transitions. [2024-11-23 23:02:15,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:02:15,800 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 170 [2024-11-23 23:02:15,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:02:15,808 INFO L225 Difference]: With dead ends: 3656 [2024-11-23 23:02:15,808 INFO L226 Difference]: Without dead ends: 2821 [2024-11-23 23:02:15,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2024-11-23 23:02:15,810 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 312 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:02:15,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 693 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 23:02:15,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2821 states. [2024-11-23 23:02:16,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2821 to 1873. [2024-11-23 23:02:16,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1548 states have (on average 1.2732558139534884) internal successors, (1971), 1574 states have internal predecessors, (1971), 259 states have call successors, (259), 65 states have call predecessors, (259), 65 states have return successors, (259), 233 states have call predecessors, (259), 259 states have call successors, (259) [2024-11-23 23:02:16,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2489 transitions. [2024-11-23 23:02:16,260 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2489 transitions. Word has length 170 [2024-11-23 23:02:16,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:02:16,260 INFO L471 AbstractCegarLoop]: Abstraction has 1873 states and 2489 transitions. [2024-11-23 23:02:16,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2024-11-23 23:02:16,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2489 transitions. [2024-11-23 23:02:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-23 23:02:16,262 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:02:16,262 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:16,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-23 23:02:16,263 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:02:16,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:02:16,263 INFO L85 PathProgramCache]: Analyzing trace with hash 601191074, now seen corresponding path program 1 times [2024-11-23 23:02:16,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:02:16,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296704901] [2024-11-23 23:02:16,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:02:16,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:02:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat