./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.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_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/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_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/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_09a2fbe0-5506-4281-bd03-5599b6b696ce/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 8509af5ddea8b4969815a398e5f07c16448270bd1737b92218393c93b8a3a0c1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:49:51,637 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:49:51,733 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 22:49:51,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:49:51,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:49:51,778 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:49:51,779 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:49:51,779 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:49:51,780 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:49:51,780 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:49:51,782 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:49:51,782 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:49:51,783 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:49:51,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:49:51,784 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:49:51,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:49:51,784 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:49:51,784 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:49:51,784 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:49:51,784 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:49:51,785 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:49:51,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:49:51,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:49:51,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:49:51,785 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:49:51,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:49:51,785 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:49:51,785 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:49:51,785 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:49:51,785 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:49:51,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:49:51,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:49:51,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:49:51,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:49:51,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:49:51,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:49:51,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:49:51,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:49:51,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:49:51,788 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:49:51,789 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:49:51,789 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:49:51,789 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:49:51,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:49:51,790 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:49:51,790 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:49:51,790 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:49:51,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:49:51,790 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_09a2fbe0-5506-4281-bd03-5599b6b696ce/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 -> 8509af5ddea8b4969815a398e5f07c16448270bd1737b92218393c93b8a3a0c1 [2024-11-23 22:49:52,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:49:52,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:49:52,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:49:52,169 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:49:52,170 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:49:52,171 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i [2024-11-23 22:49:55,678 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/data/88b7ac4f8/d2b7bc16058f4aa183b72255a8566af7/FLAG9d214aa18 [2024-11-23 22:49:56,088 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:49:56,089 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i [2024-11-23 22:49:56,104 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/data/88b7ac4f8/d2b7bc16058f4aa183b72255a8566af7/FLAG9d214aa18 [2024-11-23 22:49:56,131 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/data/88b7ac4f8/d2b7bc16058f4aa183b72255a8566af7 [2024-11-23 22:49:56,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:49:56,135 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:49:56,137 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:49:56,137 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:49:56,144 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:49:56,147 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:49:56" (1/1) ... [2024-11-23 22:49:56,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74366e94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:49:56, skipping insertion in model container [2024-11-23 22:49:56,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:49:56" (1/1) ... [2024-11-23 22:49:56,179 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:49:56,389 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_09a2fbe0-5506-4281-bd03-5599b6b696ce/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i[919,932] [2024-11-23 22:49:56,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:49:56,564 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:49:56,582 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_09a2fbe0-5506-4281-bd03-5599b6b696ce/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i[919,932] [2024-11-23 22:49:56,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:49:56,693 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:49:56,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:49:56 WrapperNode [2024-11-23 22:49:56,694 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:49:56,695 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:49:56,696 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:49:56,696 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:49:56,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:49:56" (1/1) ... [2024-11-23 22:49:56,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:49:56" (1/1) ... [2024-11-23 22:49:56,805 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 228 [2024-11-23 22:49:56,809 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:49:56,810 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:49:56,810 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:49:56,810 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:49:56,824 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:49:56" (1/1) ... [2024-11-23 22:49:56,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:49:56" (1/1) ... [2024-11-23 22:49:56,830 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:49:56" (1/1) ... [2024-11-23 22:49:56,868 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 22:49:56,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:49:56" (1/1) ... [2024-11-23 22:49:56,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:49:56" (1/1) ... [2024-11-23 22:49:56,893 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:49:56" (1/1) ... [2024-11-23 22:49:56,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:49:56" (1/1) ... [2024-11-23 22:49:56,903 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:49:56" (1/1) ... [2024-11-23 22:49:56,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:49:56" (1/1) ... [2024-11-23 22:49:56,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:49:56" (1/1) ... [2024-11-23 22:49:56,924 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:49:56,928 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:49:56,929 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:49:56,929 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:49:56,930 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:49:56" (1/1) ... [2024-11-23 22:49:56,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:49:56,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:49:56,979 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:49:56,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:49:57,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:49:57,022 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 22:49:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 22:49:57,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:49:57,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:49:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:49:57,167 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:49:57,173 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:49:57,900 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-23 22:49:57,900 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:49:57,913 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:49:57,913 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 22:49:57,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:49:57 BoogieIcfgContainer [2024-11-23 22:49:57,914 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:49:57,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:49:57,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:49:57,945 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:49:57,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:49:56" (1/3) ... [2024-11-23 22:49:57,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd9619d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:49:57, skipping insertion in model container [2024-11-23 22:49:57,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:49:56" (2/3) ... [2024-11-23 22:49:57,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd9619d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:49:57, skipping insertion in model container [2024-11-23 22:49:57,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:49:57" (3/3) ... [2024-11-23 22:49:57,951 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i [2024-11-23 22:49:57,969 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:49:57,973 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-34.i that has 2 procedures, 93 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 22:49:58,065 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:49:58,084 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;@6b3f75e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:49:58,084 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:49:58,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 71 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 22:49:58,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-23 22:49:58,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:49:58,109 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:58,109 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:49:58,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:49:58,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2045569818, now seen corresponding path program 1 times [2024-11-23 22:49:58,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:49:58,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780399692] [2024-11-23 22:49:58,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:49:58,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:49:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:49:58,631 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-23 22:49:58,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:49:58,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780399692] [2024-11-23 22:49:58,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780399692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:49:58,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549509261] [2024-11-23 22:49:58,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:49:58,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:49:58,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:49:58,641 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:49:58,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:49:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:49:58,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 22:49:58,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:49:59,026 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-23 22:49:59,027 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:49:59,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549509261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:49:59,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:49:59,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 22:49:59,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197350142] [2024-11-23 22:49:59,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:49:59,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 22:49:59,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:49:59,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 22:49:59,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:49:59,068 INFO L87 Difference]: Start difference. First operand has 93 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 71 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:49:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:49:59,115 INFO L93 Difference]: Finished difference Result 179 states and 306 transitions. [2024-11-23 22:49:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 22:49:59,119 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2024-11-23 22:49:59,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:49:59,129 INFO L225 Difference]: With dead ends: 179 [2024-11-23 22:49:59,129 INFO L226 Difference]: Without dead ends: 89 [2024-11-23 22:49:59,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 142 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 22:49:59,141 INFO L435 NwaCegarLoop]: 139 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, 139 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 22:49:59,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:49:59,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-23 22:49:59,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-23 22:49:59,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 67 states have internal predecessors, (99), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-23 22:49:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 139 transitions. [2024-11-23 22:49:59,214 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 139 transitions. Word has length 141 [2024-11-23 22:49:59,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:49:59,215 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 139 transitions. [2024-11-23 22:49:59,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:49:59,216 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 139 transitions. [2024-11-23 22:49:59,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-23 22:49:59,223 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:49:59,223 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:59,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 22:49:59,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 22:49:59,424 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:49:59,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:49:59,425 INFO L85 PathProgramCache]: Analyzing trace with hash 707075114, now seen corresponding path program 1 times [2024-11-23 22:49:59,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:49:59,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37407347] [2024-11-23 22:49:59,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:49:59,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:49:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:50:00,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:00,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37407347] [2024-11-23 22:50:00,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37407347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:00,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:00,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:50:00,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208381383] [2024-11-23 22:50:00,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:00,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:50:00,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:00,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:50:00,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:50:00,480 INFO L87 Difference]: Start difference. First operand 89 states and 139 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:00,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:00,799 INFO L93 Difference]: Finished difference Result 291 states and 456 transitions. [2024-11-23 22:50:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:50:00,803 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2024-11-23 22:50:00,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:00,806 INFO L225 Difference]: With dead ends: 291 [2024-11-23 22:50:00,806 INFO L226 Difference]: Without dead ends: 205 [2024-11-23 22:50:00,807 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 22:50:00,808 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 206 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:00,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 395 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:50:00,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-23 22:50:00,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 175. [2024-11-23 22:50:00,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 132 states have (on average 1.4772727272727273) internal successors, (195), 132 states have internal predecessors, (195), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-23 22:50:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 275 transitions. [2024-11-23 22:50:00,887 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 275 transitions. Word has length 141 [2024-11-23 22:50:00,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:00,888 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 275 transitions. [2024-11-23 22:50:00,888 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:00,888 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 275 transitions. [2024-11-23 22:50:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-23 22:50:00,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:00,893 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:00,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:50:00,894 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:00,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:00,895 INFO L85 PathProgramCache]: Analyzing trace with hash -415764853, now seen corresponding path program 1 times [2024-11-23 22:50:00,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:00,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356045616] [2024-11-23 22:50:00,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:00,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:50:01,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:01,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356045616] [2024-11-23 22:50:01,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356045616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:01,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:01,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:50:01,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270966479] [2024-11-23 22:50:01,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:01,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:50:01,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:01,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:50:01,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:50:01,600 INFO L87 Difference]: Start difference. First operand 175 states and 275 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:02,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:02,143 INFO L93 Difference]: Finished difference Result 514 states and 808 transitions. [2024-11-23 22:50:02,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:50:02,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2024-11-23 22:50:02,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:02,150 INFO L225 Difference]: With dead ends: 514 [2024-11-23 22:50:02,151 INFO L226 Difference]: Without dead ends: 342 [2024-11-23 22:50:02,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:50:02,154 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 215 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:02,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 427 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 22:50:02,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-23 22:50:02,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 179. [2024-11-23 22:50:02,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 136 states have (on average 1.463235294117647) internal successors, (199), 136 states have internal predecessors, (199), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-23 22:50:02,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 279 transitions. [2024-11-23 22:50:02,229 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 279 transitions. Word has length 142 [2024-11-23 22:50:02,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:02,230 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 279 transitions. [2024-11-23 22:50:02,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:02,230 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 279 transitions. [2024-11-23 22:50:02,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 22:50:02,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:02,239 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:02,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:50:02,239 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:02,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:02,240 INFO L85 PathProgramCache]: Analyzing trace with hash 85879794, now seen corresponding path program 1 times [2024-11-23 22:50:02,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:02,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117162286] [2024-11-23 22:50:02,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:02,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:10,560 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:50:10,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:10,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117162286] [2024-11-23 22:50:10,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117162286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:10,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:10,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:50:10,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966286737] [2024-11-23 22:50:10,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:10,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:50:10,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:10,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:50:10,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:50:10,563 INFO L87 Difference]: Start difference. First operand 179 states and 279 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:17,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:17,130 INFO L93 Difference]: Finished difference Result 557 states and 834 transitions. [2024-11-23 22:50:17,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 22:50:17,131 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-23 22:50:17,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:17,136 INFO L225 Difference]: With dead ends: 557 [2024-11-23 22:50:17,136 INFO L226 Difference]: Without dead ends: 381 [2024-11-23 22:50:17,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:50:17,142 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 556 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:17,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 528 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 22:50:17,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-23 22:50:17,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 247. [2024-11-23 22:50:17,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 192 states have (on average 1.4322916666666667) internal successors, (275), 194 states have internal predecessors, (275), 50 states have call successors, (50), 4 states have call predecessors, (50), 4 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-23 22:50:17,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 375 transitions. [2024-11-23 22:50:17,188 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 375 transitions. Word has length 143 [2024-11-23 22:50:17,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:17,189 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 375 transitions. [2024-11-23 22:50:17,189 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:17,189 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 375 transitions. [2024-11-23 22:50:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 22:50:17,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:17,192 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:17,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:50:17,193 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:17,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:17,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1860887156, now seen corresponding path program 1 times [2024-11-23 22:50:17,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:17,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471793865] [2024-11-23 22:50:17,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:17,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:21,340 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:50:21,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:21,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471793865] [2024-11-23 22:50:21,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471793865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:21,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:21,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:50:21,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834705733] [2024-11-23 22:50:21,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:21,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:50:21,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:21,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:50:21,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:50:21,342 INFO L87 Difference]: Start difference. First operand 247 states and 375 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:23,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:23,199 INFO L93 Difference]: Finished difference Result 873 states and 1310 transitions. [2024-11-23 22:50:23,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:50:23,200 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-23 22:50:23,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:23,206 INFO L225 Difference]: With dead ends: 873 [2024-11-23 22:50:23,206 INFO L226 Difference]: Without dead ends: 629 [2024-11-23 22:50:23,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:50:23,208 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 394 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:23,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 495 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 22:50:23,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2024-11-23 22:50:23,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 345. [2024-11-23 22:50:23,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 269 states have (on average 1.4349442379182156) internal successors, (386), 271 states have internal predecessors, (386), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-23 22:50:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 526 transitions. [2024-11-23 22:50:23,273 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 526 transitions. Word has length 143 [2024-11-23 22:50:23,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:23,275 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 526 transitions. [2024-11-23 22:50:23,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:23,277 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 526 transitions. [2024-11-23 22:50:23,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 22:50:23,279 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:23,279 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:23,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 22:50:23,280 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:23,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:23,280 INFO L85 PathProgramCache]: Analyzing trace with hash 765938164, now seen corresponding path program 1 times [2024-11-23 22:50:23,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:23,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6797793] [2024-11-23 22:50:23,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:23,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:50:27,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:27,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6797793] [2024-11-23 22:50:27,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6797793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:27,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:27,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:50:27,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085035476] [2024-11-23 22:50:27,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:27,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:50:27,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:27,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:50:27,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:50:27,049 INFO L87 Difference]: Start difference. First operand 345 states and 526 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:28,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:28,314 INFO L93 Difference]: Finished difference Result 925 states and 1375 transitions. [2024-11-23 22:50:28,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:50:28,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-23 22:50:28,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:28,319 INFO L225 Difference]: With dead ends: 925 [2024-11-23 22:50:28,320 INFO L226 Difference]: Without dead ends: 638 [2024-11-23 22:50:28,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:50:28,322 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 339 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:28,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 452 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:50:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2024-11-23 22:50:28,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 498. [2024-11-23 22:50:28,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 422 states have (on average 1.4454976303317535) internal successors, (610), 424 states have internal predecessors, (610), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-23 22:50:28,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 750 transitions. [2024-11-23 22:50:28,387 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 750 transitions. Word has length 143 [2024-11-23 22:50:28,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:28,387 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 750 transitions. [2024-11-23 22:50:28,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:28,388 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 750 transitions. [2024-11-23 22:50:28,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 22:50:28,390 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:28,391 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:28,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:50:28,391 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:28,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:28,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1184253277, now seen corresponding path program 1 times [2024-11-23 22:50:28,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:28,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824308385] [2024-11-23 22:50:28,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:28,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:50:30,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:30,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824308385] [2024-11-23 22:50:30,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824308385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:30,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:30,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 22:50:30,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243221175] [2024-11-23 22:50:30,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:30,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:50:30,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:30,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:50:30,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:50:30,725 INFO L87 Difference]: Start difference. First operand 498 states and 750 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:31,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:31,341 INFO L93 Difference]: Finished difference Result 964 states and 1434 transitions. [2024-11-23 22:50:31,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:50:31,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-23 22:50:31,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:31,347 INFO L225 Difference]: With dead ends: 964 [2024-11-23 22:50:31,347 INFO L226 Difference]: Without dead ends: 674 [2024-11-23 22:50:31,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:50:31,349 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 208 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:31,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 487 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 22:50:31,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-23 22:50:31,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 504. [2024-11-23 22:50:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 428 states have (on average 1.4345794392523366) internal successors, (614), 430 states have internal predecessors, (614), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-23 22:50:31,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 754 transitions. [2024-11-23 22:50:31,407 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 754 transitions. Word has length 143 [2024-11-23 22:50:31,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:31,408 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 754 transitions. [2024-11-23 22:50:31,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:31,408 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 754 transitions. [2024-11-23 22:50:31,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-23 22:50:31,410 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:31,410 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:31,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:50:31,410 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:31,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:31,413 INFO L85 PathProgramCache]: Analyzing trace with hash 849769906, now seen corresponding path program 1 times [2024-11-23 22:50:31,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:31,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745415886] [2024-11-23 22:50:31,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:31,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:50:31,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:31,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745415886] [2024-11-23 22:50:31,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745415886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:31,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:31,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:50:31,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458663682] [2024-11-23 22:50:31,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:31,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:50:31,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:31,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:50:31,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:50:31,927 INFO L87 Difference]: Start difference. First operand 504 states and 754 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:32,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:32,346 INFO L93 Difference]: Finished difference Result 864 states and 1289 transitions. [2024-11-23 22:50:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:50:32,347 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-23 22:50:32,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:32,351 INFO L225 Difference]: With dead ends: 864 [2024-11-23 22:50:32,352 INFO L226 Difference]: Without dead ends: 516 [2024-11-23 22:50:32,353 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 22:50:32,354 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 117 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:32,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 336 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 22:50:32,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-11-23 22:50:32,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 462. [2024-11-23 22:50:32,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 386 states have (on average 1.4041450777202074) internal successors, (542), 388 states have internal predecessors, (542), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-23 22:50:32,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 682 transitions. [2024-11-23 22:50:32,433 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 682 transitions. Word has length 143 [2024-11-23 22:50:32,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:32,433 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 682 transitions. [2024-11-23 22:50:32,434 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:32,434 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 682 transitions. [2024-11-23 22:50:32,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-23 22:50:32,436 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:32,436 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:32,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 22:50:32,436 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:32,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:32,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1931727872, now seen corresponding path program 1 times [2024-11-23 22:50:32,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:32,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049242530] [2024-11-23 22:50:32,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:32,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:50:36,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:36,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049242530] [2024-11-23 22:50:36,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049242530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:36,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:36,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 22:50:36,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217026020] [2024-11-23 22:50:36,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:36,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:50:36,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:36,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:50:36,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-23 22:50:36,848 INFO L87 Difference]: Start difference. First operand 462 states and 682 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:39,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:39,322 INFO L93 Difference]: Finished difference Result 914 states and 1339 transitions. [2024-11-23 22:50:39,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:50:39,323 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-23 22:50:39,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:39,328 INFO L225 Difference]: With dead ends: 914 [2024-11-23 22:50:39,329 INFO L226 Difference]: Without dead ends: 670 [2024-11-23 22:50:39,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:50:39,331 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 213 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:39,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 528 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 22:50:39,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2024-11-23 22:50:39,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 392. [2024-11-23 22:50:39,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 326 states have (on average 1.4049079754601228) internal successors, (458), 326 states have internal predecessors, (458), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-23 22:50:39,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 578 transitions. [2024-11-23 22:50:39,386 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 578 transitions. Word has length 144 [2024-11-23 22:50:39,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:39,387 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 578 transitions. [2024-11-23 22:50:39,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:39,387 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 578 transitions. [2024-11-23 22:50:39,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-23 22:50:39,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:39,390 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:39,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 22:50:39,390 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:39,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:39,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2112476102, now seen corresponding path program 1 times [2024-11-23 22:50:39,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:39,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883565106] [2024-11-23 22:50:39,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:39,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:50:47,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:47,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883565106] [2024-11-23 22:50:47,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883565106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:47,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:47,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:50:47,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689295595] [2024-11-23 22:50:47,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:47,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:50:47,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:47,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:50:47,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:50:47,320 INFO L87 Difference]: Start difference. First operand 392 states and 578 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:49,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:49,959 INFO L93 Difference]: Finished difference Result 834 states and 1202 transitions. [2024-11-23 22:50:49,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:50:49,960 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-23 22:50:49,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:49,964 INFO L225 Difference]: With dead ends: 834 [2024-11-23 22:50:49,964 INFO L226 Difference]: Without dead ends: 541 [2024-11-23 22:50:49,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2024-11-23 22:50:49,966 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 302 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:49,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 763 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-23 22:50:49,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-23 22:50:50,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 429. [2024-11-23 22:50:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 363 states have (on average 1.3911845730027548) internal successors, (505), 363 states have internal predecessors, (505), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-23 22:50:50,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 625 transitions. [2024-11-23 22:50:50,021 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 625 transitions. Word has length 144 [2024-11-23 22:50:50,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:50,021 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 625 transitions. [2024-11-23 22:50:50,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 625 transitions. [2024-11-23 22:50:50,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-23 22:50:50,024 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:50,024 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:50,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 22:50:50,025 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:50,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:50,025 INFO L85 PathProgramCache]: Analyzing trace with hash -156289763, now seen corresponding path program 1 times [2024-11-23 22:50:50,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:50,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961744565] [2024-11-23 22:50:50,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:50,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:50:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:50:54,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:50:54,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961744565] [2024-11-23 22:50:54,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961744565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:50:54,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:50:54,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:50:54,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120741548] [2024-11-23 22:50:54,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:50:54,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:50:54,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:50:54,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:50:54,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:50:54,342 INFO L87 Difference]: Start difference. First operand 429 states and 625 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:56,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:50:56,773 INFO L93 Difference]: Finished difference Result 853 states and 1237 transitions. [2024-11-23 22:50:56,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 22:50:56,775 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-23 22:50:56,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:50:56,779 INFO L225 Difference]: With dead ends: 853 [2024-11-23 22:50:56,780 INFO L226 Difference]: Without dead ends: 659 [2024-11-23 22:50:56,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:50:56,782 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 271 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:50:56,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 700 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 22:50:56,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-11-23 22:50:56,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 417. [2024-11-23 22:50:56,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 351 states have (on average 1.393162393162393) internal successors, (489), 351 states have internal predecessors, (489), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-23 22:50:56,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 609 transitions. [2024-11-23 22:50:56,838 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 609 transitions. Word has length 145 [2024-11-23 22:50:56,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:50:56,839 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 609 transitions. [2024-11-23 22:50:56,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:50:56,839 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 609 transitions. [2024-11-23 22:50:56,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-23 22:50:56,842 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:50:56,842 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:50:56,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 22:50:56,842 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:50:56,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:50:56,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1280528815, now seen corresponding path program 1 times [2024-11-23 22:50:56,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:50:56,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829140109] [2024-11-23 22:50:56,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:50:56,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:50:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:51:01,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:01,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829140109] [2024-11-23 22:51:01,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829140109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:01,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:01,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 22:51:01,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427262830] [2024-11-23 22:51:01,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:01,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 22:51:01,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:01,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 22:51:01,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:51:01,913 INFO L87 Difference]: Start difference. First operand 417 states and 609 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:51:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:05,870 INFO L93 Difference]: Finished difference Result 810 states and 1172 transitions. [2024-11-23 22:51:05,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-23 22:51:05,870 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-23 22:51:05,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:05,875 INFO L225 Difference]: With dead ends: 810 [2024-11-23 22:51:05,875 INFO L226 Difference]: Without dead ends: 618 [2024-11-23 22:51:05,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:51:05,877 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 265 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:05,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 586 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 22:51:05,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2024-11-23 22:51:05,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 423. [2024-11-23 22:51:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 357 states have (on average 1.3977591036414565) internal successors, (499), 357 states have internal predecessors, (499), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-23 22:51:05,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 619 transitions. [2024-11-23 22:51:05,936 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 619 transitions. Word has length 145 [2024-11-23 22:51:05,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:05,936 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 619 transitions. [2024-11-23 22:51:05,937 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:51:05,937 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 619 transitions. [2024-11-23 22:51:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-23 22:51:05,939 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:05,939 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:05,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 22:51:05,940 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:05,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:05,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1919489489, now seen corresponding path program 1 times [2024-11-23 22:51:05,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:05,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255828912] [2024-11-23 22:51:05,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:05,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:51:12,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:12,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255828912] [2024-11-23 22:51:12,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255828912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:12,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:12,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:51:12,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546410060] [2024-11-23 22:51:12,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:12,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:51:12,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:12,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:51:12,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:51:12,582 INFO L87 Difference]: Start difference. First operand 423 states and 619 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:51:17,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:51:17,764 INFO L93 Difference]: Finished difference Result 1006 states and 1449 transitions. [2024-11-23 22:51:17,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:51:17,765 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-23 22:51:17,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:51:17,767 INFO L225 Difference]: With dead ends: 1006 [2024-11-23 22:51:17,768 INFO L226 Difference]: Without dead ends: 728 [2024-11-23 22:51:17,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2024-11-23 22:51:17,769 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 397 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-23 22:51:17,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 866 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-23 22:51:17,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2024-11-23 22:51:17,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 471. [2024-11-23 22:51:17,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 405 states have (on average 1.4049382716049383) internal successors, (569), 405 states have internal predecessors, (569), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-23 22:51:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 689 transitions. [2024-11-23 22:51:17,845 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 689 transitions. Word has length 145 [2024-11-23 22:51:17,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:51:17,845 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 689 transitions. [2024-11-23 22:51:17,846 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:51:17,846 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 689 transitions. [2024-11-23 22:51:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-23 22:51:17,848 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:51:17,848 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:51:17,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 22:51:17,849 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:51:17,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:51:17,849 INFO L85 PathProgramCache]: Analyzing trace with hash -600470445, now seen corresponding path program 1 times [2024-11-23 22:51:17,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:51:17,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683801589] [2024-11-23 22:51:17,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:51:17,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:51:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:51:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:51:58,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:51:58,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683801589] [2024-11-23 22:51:58,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683801589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:51:58,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:51:58,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 22:51:58,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114039545] [2024-11-23 22:51:58,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:51:58,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 22:51:58,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:51:58,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 22:51:58,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:51:58,600 INFO L87 Difference]: Start difference. First operand 471 states and 689 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:52:08,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:52:08,843 INFO L93 Difference]: Finished difference Result 861 states and 1226 transitions. [2024-11-23 22:52:08,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 22:52:08,844 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-23 22:52:08,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:52:08,848 INFO L225 Difference]: With dead ends: 861 [2024-11-23 22:52:08,848 INFO L226 Difference]: Without dead ends: 659 [2024-11-23 22:52:08,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2024-11-23 22:52:08,850 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 331 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:52:08,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 898 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-23 22:52:08,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-11-23 22:52:08,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 489. [2024-11-23 22:52:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 423 states have (on average 1.392434988179669) internal successors, (589), 423 states have internal predecessors, (589), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-23 22:52:08,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 709 transitions. [2024-11-23 22:52:08,924 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 709 transitions. Word has length 145 [2024-11-23 22:52:08,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:52:08,925 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 709 transitions. [2024-11-23 22:52:08,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:52:08,925 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 709 transitions. [2024-11-23 22:52:08,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-23 22:52:08,928 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:52:08,929 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:52:08,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 22:52:08,929 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:52:08,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:52:08,930 INFO L85 PathProgramCache]: Analyzing trace with hash -371173318, now seen corresponding path program 1 times [2024-11-23 22:52:08,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:52:08,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631315636] [2024-11-23 22:52:08,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:08,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:52:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:52:29,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:52:29,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631315636] [2024-11-23 22:52:29,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631315636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:52:29,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:52:29,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:52:29,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618411294] [2024-11-23 22:52:29,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:52:29,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:52:29,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:52:29,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:52:29,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:52:29,728 INFO L87 Difference]: Start difference. First operand 489 states and 709 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:52:31,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:52:31,682 INFO L93 Difference]: Finished difference Result 817 states and 1135 transitions. [2024-11-23 22:52:31,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:52:31,683 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 146 [2024-11-23 22:52:31,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:52:31,687 INFO L225 Difference]: With dead ends: 817 [2024-11-23 22:52:31,688 INFO L226 Difference]: Without dead ends: 815 [2024-11-23 22:52:31,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2024-11-23 22:52:31,689 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 417 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:52:31,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 864 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:52:31,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-23 22:52:31,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 631. [2024-11-23 22:52:31,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 565 states have (on average 1.3610619469026548) internal successors, (769), 565 states have internal predecessors, (769), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-23 22:52:31,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 889 transitions. [2024-11-23 22:52:31,769 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 889 transitions. Word has length 146 [2024-11-23 22:52:31,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:52:31,770 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 889 transitions. [2024-11-23 22:52:31,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:52:31,771 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 889 transitions. [2024-11-23 22:52:31,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-23 22:52:31,773 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:52:31,774 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:52:31,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 22:52:31,775 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:52:31,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:52:31,776 INFO L85 PathProgramCache]: Analyzing trace with hash 51528508, now seen corresponding path program 1 times [2024-11-23 22:52:31,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:52:31,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746887101] [2024-11-23 22:52:31,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:31,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:52:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:52:32,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:52:32,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746887101] [2024-11-23 22:52:32,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746887101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:52:32,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:52:32,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:52:32,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490867686] [2024-11-23 22:52:32,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:52:32,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:52:32,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:52:32,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:52:32,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:52:32,025 INFO L87 Difference]: Start difference. First operand 631 states and 889 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:52:32,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:52:32,320 INFO L93 Difference]: Finished difference Result 1003 states and 1422 transitions. [2024-11-23 22:52:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:52:32,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-11-23 22:52:32,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:52:32,325 INFO L225 Difference]: With dead ends: 1003 [2024-11-23 22:52:32,325 INFO L226 Difference]: Without dead ends: 624 [2024-11-23 22:52:32,326 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 22:52:32,327 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 128 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:52:32,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 517 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 22:52:32,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-11-23 22:52:32,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 600. [2024-11-23 22:52:32,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 534 states have (on average 1.3651685393258426) internal successors, (729), 534 states have internal predecessors, (729), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-23 22:52:32,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 849 transitions. [2024-11-23 22:52:32,409 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 849 transitions. Word has length 146 [2024-11-23 22:52:32,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:52:32,410 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 849 transitions. [2024-11-23 22:52:32,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:52:32,410 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 849 transitions. [2024-11-23 22:52:32,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-23 22:52:32,415 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:52:32,415 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:52:32,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 22:52:32,416 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:52:32,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:52:32,416 INFO L85 PathProgramCache]: Analyzing trace with hash 812120645, now seen corresponding path program 1 times [2024-11-23 22:52:32,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:52:32,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057774185] [2024-11-23 22:52:32,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:32,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:52:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:52:39,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:52:39,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057774185] [2024-11-23 22:52:39,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057774185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:52:39,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:52:39,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:52:39,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730330940] [2024-11-23 22:52:39,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:52:39,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:52:39,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:52:39,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:52:39,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:52:39,292 INFO L87 Difference]: Start difference. First operand 600 states and 849 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:52:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:52:44,128 INFO L93 Difference]: Finished difference Result 924 states and 1326 transitions. [2024-11-23 22:52:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 22:52:44,128 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-11-23 22:52:44,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:52:44,131 INFO L225 Difference]: With dead ends: 924 [2024-11-23 22:52:44,131 INFO L226 Difference]: Without dead ends: 726 [2024-11-23 22:52:44,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2024-11-23 22:52:44,132 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 293 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:52:44,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 539 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-23 22:52:44,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-11-23 22:52:44,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 610. [2024-11-23 22:52:44,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 544 states have (on average 1.3658088235294117) internal successors, (743), 544 states have internal predecessors, (743), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-23 22:52:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 863 transitions. [2024-11-23 22:52:44,213 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 863 transitions. Word has length 146 [2024-11-23 22:52:44,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:52:44,214 INFO L471 AbstractCegarLoop]: Abstraction has 610 states and 863 transitions. [2024-11-23 22:52:44,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:52:44,214 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 863 transitions. [2024-11-23 22:52:44,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-23 22:52:44,217 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:52:44,217 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:52:44,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 22:52:44,218 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:52:44,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:52:44,218 INFO L85 PathProgramCache]: Analyzing trace with hash 326597605, now seen corresponding path program 1 times [2024-11-23 22:52:44,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:52:44,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134858114] [2024-11-23 22:52:44,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:52:44,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:52:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:52:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:52:53,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:52:53,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134858114] [2024-11-23 22:52:53,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134858114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:52:53,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:52:53,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 22:52:53,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393546209] [2024-11-23 22:52:53,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:52:53,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 22:52:53,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:52:53,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 22:52:53,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:52:53,248 INFO L87 Difference]: Start difference. First operand 610 states and 863 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:53:00,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:53:00,390 INFO L93 Difference]: Finished difference Result 1616 states and 2329 transitions. [2024-11-23 22:53:00,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 22:53:00,391 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-11-23 22:53:00,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:53:00,395 INFO L225 Difference]: With dead ends: 1616 [2024-11-23 22:53:00,395 INFO L226 Difference]: Without dead ends: 1398 [2024-11-23 22:53:00,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2024-11-23 22:53:00,396 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 615 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:53:00,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 1167 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-23 22:53:00,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2024-11-23 22:53:00,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 974. [2024-11-23 22:53:00,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 864 states have (on average 1.3946759259259258) internal successors, (1205), 864 states have internal predecessors, (1205), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:53:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1405 transitions. [2024-11-23 22:53:00,523 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1405 transitions. Word has length 146 [2024-11-23 22:53:00,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:53:00,524 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 1405 transitions. [2024-11-23 22:53:00,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:53:00,524 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1405 transitions. [2024-11-23 22:53:00,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-23 22:53:00,527 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:53:00,527 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:00,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 22:53:00,528 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:53:00,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:53:00,528 INFO L85 PathProgramCache]: Analyzing trace with hash 822627692, now seen corresponding path program 1 times [2024-11-23 22:53:00,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:53:00,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88447534] [2024-11-23 22:53:00,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:53:00,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:53:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:53:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:53:32,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:53:32,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88447534] [2024-11-23 22:53:32,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88447534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:53:32,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:53:32,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-23 22:53:32,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312336963] [2024-11-23 22:53:32,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:53:32,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 22:53:32,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:53:32,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 22:53:32,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:53:32,190 INFO L87 Difference]: Start difference. First operand 974 states and 1405 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:53:35,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:53:35,310 INFO L93 Difference]: Finished difference Result 1354 states and 1901 transitions. [2024-11-23 22:53:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:53:35,311 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 147 [2024-11-23 22:53:35,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:53:35,316 INFO L225 Difference]: With dead ends: 1354 [2024-11-23 22:53:35,316 INFO L226 Difference]: Without dead ends: 1352 [2024-11-23 22:53:35,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2024-11-23 22:53:35,317 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 550 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:53:35,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 713 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-23 22:53:35,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2024-11-23 22:53:35,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1090. [2024-11-23 22:53:35,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 980 states have (on average 1.3908163265306122) internal successors, (1363), 980 states have internal predecessors, (1363), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:53:35,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1563 transitions. [2024-11-23 22:53:35,421 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1563 transitions. Word has length 147 [2024-11-23 22:53:35,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:53:35,422 INFO L471 AbstractCegarLoop]: Abstraction has 1090 states and 1563 transitions. [2024-11-23 22:53:35,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:53:35,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1563 transitions. [2024-11-23 22:53:35,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-23 22:53:35,425 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:53:35,425 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:35,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 22:53:35,425 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:53:35,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:53:35,426 INFO L85 PathProgramCache]: Analyzing trace with hash -188489558, now seen corresponding path program 1 times [2024-11-23 22:53:35,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:53:35,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61034226] [2024-11-23 22:53:35,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:53:35,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:53:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:53:35,573 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:53:35,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:53:35,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61034226] [2024-11-23 22:53:35,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61034226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:53:35,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:53:35,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:53:35,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934594118] [2024-11-23 22:53:35,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:53:35,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:53:35,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:53:35,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:53:35,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:53:35,576 INFO L87 Difference]: Start difference. First operand 1090 states and 1563 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:53:35,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:53:35,716 INFO L93 Difference]: Finished difference Result 1778 states and 2581 transitions. [2024-11-23 22:53:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:53:35,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2024-11-23 22:53:35,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:53:35,723 INFO L225 Difference]: With dead ends: 1778 [2024-11-23 22:53:35,723 INFO L226 Difference]: Without dead ends: 1150 [2024-11-23 22:53:35,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 22:53:35,726 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 10 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:53:35,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 250 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:53:35,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2024-11-23 22:53:35,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1080. [2024-11-23 22:53:35,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 970 states have (on average 1.368041237113402) internal successors, (1327), 970 states have internal predecessors, (1327), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:53:35,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1527 transitions. [2024-11-23 22:53:35,852 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1527 transitions. Word has length 147 [2024-11-23 22:53:35,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:53:35,853 INFO L471 AbstractCegarLoop]: Abstraction has 1080 states and 1527 transitions. [2024-11-23 22:53:35,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:53:35,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1527 transitions. [2024-11-23 22:53:35,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-23 22:53:35,856 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:53:35,856 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:35,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 22:53:35,857 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:53:35,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:53:35,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2079978556, now seen corresponding path program 1 times [2024-11-23 22:53:35,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:53:35,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295061105] [2024-11-23 22:53:35,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:53:35,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:53:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:53:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:53:49,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:53:49,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295061105] [2024-11-23 22:53:49,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295061105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:53:49,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:53:49,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 22:53:49,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054785586] [2024-11-23 22:53:49,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:53:49,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 22:53:49,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:53:49,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 22:53:49,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:53:49,480 INFO L87 Difference]: Start difference. First operand 1080 states and 1527 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:53:55,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:53:55,172 INFO L93 Difference]: Finished difference Result 1500 states and 2107 transitions. [2024-11-23 22:53:55,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-23 22:53:55,172 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2024-11-23 22:53:55,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:53:55,177 INFO L225 Difference]: With dead ends: 1500 [2024-11-23 22:53:55,177 INFO L226 Difference]: Without dead ends: 1282 [2024-11-23 22:53:55,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=199, Invalid=671, Unknown=0, NotChecked=0, Total=870 [2024-11-23 22:53:55,179 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 453 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:53:55,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 714 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-23 22:53:55,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2024-11-23 22:53:55,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1072. [2024-11-23 22:53:55,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 962 states have (on average 1.366943866943867) internal successors, (1315), 962 states have internal predecessors, (1315), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:53:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1515 transitions. [2024-11-23 22:53:55,288 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1515 transitions. Word has length 147 [2024-11-23 22:53:55,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:53:55,289 INFO L471 AbstractCegarLoop]: Abstraction has 1072 states and 1515 transitions. [2024-11-23 22:53:55,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:53:55,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1515 transitions. [2024-11-23 22:53:55,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-23 22:53:55,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:53:55,291 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:53:55,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 22:53:55,292 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:53:55,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:53:55,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1534930370, now seen corresponding path program 1 times [2024-11-23 22:53:55,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:53:55,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200543908] [2024-11-23 22:53:55,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:53:55,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:53:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:10,305 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:54:10,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:10,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200543908] [2024-11-23 22:54:10,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200543908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:54:10,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:54:10,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-23 22:54:10,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332200860] [2024-11-23 22:54:10,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:54:10,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 22:54:10,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:10,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 22:54:10,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:54:10,306 INFO L87 Difference]: Start difference. First operand 1072 states and 1515 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:54:14,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:54:14,911 INFO L93 Difference]: Finished difference Result 1621 states and 2234 transitions. [2024-11-23 22:54:14,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 22:54:14,912 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2024-11-23 22:54:14,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:54:14,917 INFO L225 Difference]: With dead ends: 1621 [2024-11-23 22:54:14,917 INFO L226 Difference]: Without dead ends: 1391 [2024-11-23 22:54:14,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2024-11-23 22:54:14,920 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 485 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:54:14,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 728 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-23 22:54:14,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2024-11-23 22:54:15,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1086. [2024-11-23 22:54:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 976 states have (on average 1.3637295081967213) internal successors, (1331), 976 states have internal predecessors, (1331), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:54:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1531 transitions. [2024-11-23 22:54:15,021 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1531 transitions. Word has length 147 [2024-11-23 22:54:15,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:54:15,022 INFO L471 AbstractCegarLoop]: Abstraction has 1086 states and 1531 transitions. [2024-11-23 22:54:15,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:54:15,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1531 transitions. [2024-11-23 22:54:15,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-23 22:54:15,024 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:54:15,024 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:15,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 22:54:15,024 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:54:15,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:15,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1032776174, now seen corresponding path program 1 times [2024-11-23 22:54:15,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:15,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674992982] [2024-11-23 22:54:15,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:54:15,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:54:15,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:15,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674992982] [2024-11-23 22:54:15,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674992982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:54:15,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:54:15,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:54:15,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905347941] [2024-11-23 22:54:15,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:54:15,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:54:15,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:15,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:54:15,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:54:15,516 INFO L87 Difference]: Start difference. First operand 1086 states and 1531 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:54:16,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:54:16,134 INFO L93 Difference]: Finished difference Result 1686 states and 2416 transitions. [2024-11-23 22:54:16,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:54:16,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2024-11-23 22:54:16,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:54:16,139 INFO L225 Difference]: With dead ends: 1686 [2024-11-23 22:54:16,139 INFO L226 Difference]: Without dead ends: 1142 [2024-11-23 22:54:16,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:54:16,141 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 131 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:54:16,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 515 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 22:54:16,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2024-11-23 22:54:16,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1082. [2024-11-23 22:54:16,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 972 states have (on average 1.3569958847736625) internal successors, (1319), 972 states have internal predecessors, (1319), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:54:16,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1519 transitions. [2024-11-23 22:54:16,232 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1519 transitions. Word has length 148 [2024-11-23 22:54:16,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:54:16,233 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1519 transitions. [2024-11-23 22:54:16,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:54:16,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1519 transitions. [2024-11-23 22:54:16,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-23 22:54:16,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:54:16,235 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:16,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 22:54:16,236 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:54:16,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:16,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1331974416, now seen corresponding path program 1 times [2024-11-23 22:54:16,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:16,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857318093] [2024-11-23 22:54:16,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:54:16,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:16,596 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:54:16,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:16,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857318093] [2024-11-23 22:54:16,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857318093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:54:16,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:54:16,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:54:16,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264099892] [2024-11-23 22:54:16,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:54:16,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:54:16,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:16,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:54:16,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:54:16,598 INFO L87 Difference]: Start difference. First operand 1082 states and 1519 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:54:17,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:54:17,043 INFO L93 Difference]: Finished difference Result 1802 states and 2537 transitions. [2024-11-23 22:54:17,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:54:17,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2024-11-23 22:54:17,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:54:17,047 INFO L225 Difference]: With dead ends: 1802 [2024-11-23 22:54:17,048 INFO L226 Difference]: Without dead ends: 1141 [2024-11-23 22:54:17,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:54:17,049 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 128 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:54:17,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 372 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 22:54:17,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2024-11-23 22:54:17,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1081. [2024-11-23 22:54:17,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 971 states have (on average 1.356333676622039) internal successors, (1317), 971 states have internal predecessors, (1317), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:54:17,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1517 transitions. [2024-11-23 22:54:17,151 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1517 transitions. Word has length 148 [2024-11-23 22:54:17,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:54:17,152 INFO L471 AbstractCegarLoop]: Abstraction has 1081 states and 1517 transitions. [2024-11-23 22:54:17,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:54:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1517 transitions. [2024-11-23 22:54:17,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-23 22:54:17,154 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:54:17,155 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:17,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 22:54:17,155 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:54:17,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:17,155 INFO L85 PathProgramCache]: Analyzing trace with hash -773530982, now seen corresponding path program 1 times [2024-11-23 22:54:17,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:17,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852410946] [2024-11-23 22:54:17,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:54:17,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:19,994 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:54:19,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:19,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852410946] [2024-11-23 22:54:19,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852410946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:54:19,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:54:19,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:54:19,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221582347] [2024-11-23 22:54:19,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:54:19,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:54:19,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:19,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:54:19,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:54:19,996 INFO L87 Difference]: Start difference. First operand 1081 states and 1517 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:54:21,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:54:21,809 INFO L93 Difference]: Finished difference Result 1971 states and 2757 transitions. [2024-11-23 22:54:21,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:54:21,810 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 149 [2024-11-23 22:54:21,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:54:21,814 INFO L225 Difference]: With dead ends: 1971 [2024-11-23 22:54:21,814 INFO L226 Difference]: Without dead ends: 1113 [2024-11-23 22:54:21,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:54:21,817 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 246 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:54:21,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 529 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 22:54:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2024-11-23 22:54:21,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 975. [2024-11-23 22:54:21,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 865 states have (on average 1.3560693641618498) internal successors, (1173), 865 states have internal predecessors, (1173), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:54:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1373 transitions. [2024-11-23 22:54:21,923 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1373 transitions. Word has length 149 [2024-11-23 22:54:21,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:54:21,924 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1373 transitions. [2024-11-23 22:54:21,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:54:21,924 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1373 transitions. [2024-11-23 22:54:21,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-23 22:54:21,926 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:54:21,927 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:21,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 22:54:21,927 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:54:21,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:21,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1001476380, now seen corresponding path program 1 times [2024-11-23 22:54:21,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:21,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553042099] [2024-11-23 22:54:21,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:54:21,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:54:26,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:26,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553042099] [2024-11-23 22:54:26,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553042099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:54:26,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:54:26,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 22:54:26,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012518517] [2024-11-23 22:54:26,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:54:26,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 22:54:26,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:26,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 22:54:26,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:54:26,439 INFO L87 Difference]: Start difference. First operand 975 states and 1373 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:54:28,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:54:28,647 INFO L93 Difference]: Finished difference Result 1993 states and 2828 transitions. [2024-11-23 22:54:28,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:54:28,648 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 149 [2024-11-23 22:54:28,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:54:28,655 INFO L225 Difference]: With dead ends: 1993 [2024-11-23 22:54:28,656 INFO L226 Difference]: Without dead ends: 1453 [2024-11-23 22:54:28,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=124, Invalid=218, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:54:28,658 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 340 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-23 22:54:28,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 517 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-23 22:54:28,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2024-11-23 22:54:28,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 983. [2024-11-23 22:54:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 873 states have (on average 1.3573883161512028) internal successors, (1185), 873 states have internal predecessors, (1185), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:54:28,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1385 transitions. [2024-11-23 22:54:28,793 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1385 transitions. Word has length 149 [2024-11-23 22:54:28,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:54:28,794 INFO L471 AbstractCegarLoop]: Abstraction has 983 states and 1385 transitions. [2024-11-23 22:54:28,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:54:28,795 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1385 transitions. [2024-11-23 22:54:28,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-23 22:54:28,796 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:54:28,797 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:28,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 22:54:28,799 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:54:28,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:28,800 INFO L85 PathProgramCache]: Analyzing trace with hash 337676487, now seen corresponding path program 1 times [2024-11-23 22:54:28,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:28,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066205972] [2024-11-23 22:54:28,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:54:28,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:54:33,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:33,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066205972] [2024-11-23 22:54:33,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066205972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:54:33,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:54:33,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:54:33,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734196343] [2024-11-23 22:54:33,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:54:33,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:54:33,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:33,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:54:33,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:54:33,767 INFO L87 Difference]: Start difference. First operand 983 states and 1385 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:54:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:54:35,906 INFO L93 Difference]: Finished difference Result 1877 states and 2649 transitions. [2024-11-23 22:54:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:54:35,907 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 151 [2024-11-23 22:54:35,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:54:35,913 INFO L225 Difference]: With dead ends: 1877 [2024-11-23 22:54:35,913 INFO L226 Difference]: Without dead ends: 1649 [2024-11-23 22:54:35,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2024-11-23 22:54:35,914 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 255 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:54:35,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 938 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 22:54:35,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2024-11-23 22:54:36,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 991. [2024-11-23 22:54:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 881 states have (on average 1.3654937570942112) internal successors, (1203), 881 states have internal predecessors, (1203), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:54:36,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1403 transitions. [2024-11-23 22:54:36,027 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1403 transitions. Word has length 151 [2024-11-23 22:54:36,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:54:36,028 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1403 transitions. [2024-11-23 22:54:36,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:54:36,028 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1403 transitions. [2024-11-23 22:54:36,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-23 22:54:36,029 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:54:36,030 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:36,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 22:54:36,030 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:54:36,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:36,031 INFO L85 PathProgramCache]: Analyzing trace with hash -721713261, now seen corresponding path program 1 times [2024-11-23 22:54:36,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:36,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314847156] [2024-11-23 22:54:36,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:54:36,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:36,325 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:54:36,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:36,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314847156] [2024-11-23 22:54:36,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314847156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:54:36,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:54:36,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:54:36,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959224102] [2024-11-23 22:54:36,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:54:36,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:54:36,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:36,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:54:36,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:54:36,326 INFO L87 Difference]: Start difference. First operand 991 states and 1403 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:54:36,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:54:36,919 INFO L93 Difference]: Finished difference Result 1651 states and 2362 transitions. [2024-11-23 22:54:36,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:54:36,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 151 [2024-11-23 22:54:36,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:54:36,923 INFO L225 Difference]: With dead ends: 1651 [2024-11-23 22:54:36,923 INFO L226 Difference]: Without dead ends: 1061 [2024-11-23 22:54:36,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:54:36,924 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 139 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:54:36,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 592 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 22:54:36,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2024-11-23 22:54:37,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 981. [2024-11-23 22:54:37,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 871 states have (on average 1.362801377726751) internal successors, (1187), 871 states have internal predecessors, (1187), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:54:37,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1387 transitions. [2024-11-23 22:54:37,009 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1387 transitions. Word has length 151 [2024-11-23 22:54:37,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:54:37,009 INFO L471 AbstractCegarLoop]: Abstraction has 981 states and 1387 transitions. [2024-11-23 22:54:37,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:54:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1387 transitions. [2024-11-23 22:54:37,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-23 22:54:37,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:54:37,011 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:37,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 22:54:37,012 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:54:37,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:37,012 INFO L85 PathProgramCache]: Analyzing trace with hash -618318412, now seen corresponding path program 1 times [2024-11-23 22:54:37,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:37,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109250676] [2024-11-23 22:54:37,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:54:37,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:37,111 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:54:37,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:37,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109250676] [2024-11-23 22:54:37,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109250676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:54:37,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:54:37,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:54:37,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472395316] [2024-11-23 22:54:37,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:54:37,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:54:37,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:37,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:54:37,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:54:37,113 INFO L87 Difference]: Start difference. First operand 981 states and 1387 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:54:37,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:54:37,263 INFO L93 Difference]: Finished difference Result 1843 states and 2656 transitions. [2024-11-23 22:54:37,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:54:37,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2024-11-23 22:54:37,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:54:37,270 INFO L225 Difference]: With dead ends: 1843 [2024-11-23 22:54:37,270 INFO L226 Difference]: Without dead ends: 1231 [2024-11-23 22:54:37,271 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 22:54:37,272 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 36 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:54:37,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 242 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:54:37,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2024-11-23 22:54:37,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1127. [2024-11-23 22:54:37,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1017 states have (on average 1.3736479842674534) internal successors, (1397), 1017 states have internal predecessors, (1397), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:54:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1597 transitions. [2024-11-23 22:54:37,352 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1597 transitions. Word has length 152 [2024-11-23 22:54:37,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:54:37,352 INFO L471 AbstractCegarLoop]: Abstraction has 1127 states and 1597 transitions. [2024-11-23 22:54:37,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:54:37,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1597 transitions. [2024-11-23 22:54:37,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-23 22:54:37,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:54:37,354 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:37,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 22:54:37,354 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:54:37,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:37,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1184421737, now seen corresponding path program 1 times [2024-11-23 22:54:37,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:37,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971772770] [2024-11-23 22:54:37,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:54:37,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:57,890 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:54:57,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:57,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971772770] [2024-11-23 22:54:57,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971772770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:54:57,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:54:57,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-23 22:54:57,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186179563] [2024-11-23 22:54:57,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:54:57,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 22:54:57,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:57,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 22:54:57,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:54:57,892 INFO L87 Difference]: Start difference. First operand 1127 states and 1597 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:55:06,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:55:06,456 INFO L93 Difference]: Finished difference Result 1545 states and 2082 transitions. [2024-11-23 22:55:06,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 22:55:06,456 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2024-11-23 22:55:06,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:55:06,463 INFO L225 Difference]: With dead ends: 1545 [2024-11-23 22:55:06,463 INFO L226 Difference]: Without dead ends: 1543 [2024-11-23 22:55:06,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=268, Invalid=1292, Unknown=0, NotChecked=0, Total=1560 [2024-11-23 22:55:06,465 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 462 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:55:06,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 857 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-23 22:55:06,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2024-11-23 22:55:06,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1183. [2024-11-23 22:55:06,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1073 states have (on average 1.369990680335508) internal successors, (1470), 1073 states have internal predecessors, (1470), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:55:06,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1670 transitions. [2024-11-23 22:55:06,558 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1670 transitions. Word has length 154 [2024-11-23 22:55:06,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:55:06,558 INFO L471 AbstractCegarLoop]: Abstraction has 1183 states and 1670 transitions. [2024-11-23 22:55:06,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:55:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1670 transitions. [2024-11-23 22:55:06,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-23 22:55:06,560 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:55:06,560 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:06,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-23 22:55:06,560 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:55:06,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:06,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1945752681, now seen corresponding path program 1 times [2024-11-23 22:55:06,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:06,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768827630] [2024-11-23 22:55:06,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:06,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:55:07,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:07,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768827630] [2024-11-23 22:55:07,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768827630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:55:07,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:55:07,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:55:07,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860258699] [2024-11-23 22:55:07,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:55:07,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:55:07,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:07,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:55:07,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:55:07,716 INFO L87 Difference]: Start difference. First operand 1183 states and 1670 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:55:09,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:55:09,969 INFO L93 Difference]: Finished difference Result 2265 states and 3175 transitions. [2024-11-23 22:55:09,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 22:55:09,969 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2024-11-23 22:55:09,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:55:09,975 INFO L225 Difference]: With dead ends: 2265 [2024-11-23 22:55:09,975 INFO L226 Difference]: Without dead ends: 1473 [2024-11-23 22:55:09,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2024-11-23 22:55:09,977 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 261 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:55:09,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 936 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-23 22:55:09,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2024-11-23 22:55:10,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1247. [2024-11-23 22:55:10,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1137 states have (on average 1.358839050131926) internal successors, (1545), 1137 states have internal predecessors, (1545), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:55:10,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1745 transitions. [2024-11-23 22:55:10,045 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1745 transitions. Word has length 154 [2024-11-23 22:55:10,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:55:10,046 INFO L471 AbstractCegarLoop]: Abstraction has 1247 states and 1745 transitions. [2024-11-23 22:55:10,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:55:10,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1745 transitions. [2024-11-23 22:55:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-23 22:55:10,047 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:55:10,048 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:10,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-23 22:55:10,048 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:55:10,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:10,048 INFO L85 PathProgramCache]: Analyzing trace with hash -524890215, now seen corresponding path program 1 times [2024-11-23 22:55:10,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:10,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529603851] [2024-11-23 22:55:10,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:10,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:55:36,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:36,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529603851] [2024-11-23 22:55:36,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529603851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:55:36,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:55:36,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-23 22:55:36,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236202485] [2024-11-23 22:55:36,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:55:36,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 22:55:36,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:36,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 22:55:36,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:55:36,097 INFO L87 Difference]: Start difference. First operand 1247 states and 1745 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:55:49,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:55:49,089 INFO L93 Difference]: Finished difference Result 1875 states and 2487 transitions. [2024-11-23 22:55:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-23 22:55:49,090 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2024-11-23 22:55:49,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:55:49,096 INFO L225 Difference]: With dead ends: 1875 [2024-11-23 22:55:49,096 INFO L226 Difference]: Without dead ends: 1873 [2024-11-23 22:55:49,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=387, Invalid=1869, Unknown=0, NotChecked=0, Total=2256 [2024-11-23 22:55:49,101 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 663 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:55:49,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 890 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 22:55:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2024-11-23 22:55:49,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1264. [2024-11-23 22:55:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1153 states have (on average 1.362532523850824) internal successors, (1571), 1153 states have internal predecessors, (1571), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:55:49,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1771 transitions. [2024-11-23 22:55:49,204 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1771 transitions. Word has length 154 [2024-11-23 22:55:49,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:55:49,205 INFO L471 AbstractCegarLoop]: Abstraction has 1264 states and 1771 transitions. [2024-11-23 22:55:49,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:55:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1771 transitions. [2024-11-23 22:55:49,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-23 22:55:49,206 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:55:49,206 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:49,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-23 22:55:49,207 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:55:49,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:49,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1286221159, now seen corresponding path program 1 times [2024-11-23 22:55:49,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:49,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828696488] [2024-11-23 22:55:49,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:49,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:55:50,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:50,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828696488] [2024-11-23 22:55:50,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828696488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:55:50,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:55:50,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:55:50,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856559683] [2024-11-23 22:55:50,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:55:50,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:55:50,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:50,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:55:50,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:55:50,024 INFO L87 Difference]: Start difference. First operand 1264 states and 1771 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:55:52,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:55:52,422 INFO L93 Difference]: Finished difference Result 2238 states and 3136 transitions. [2024-11-23 22:55:52,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:55:52,422 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2024-11-23 22:55:52,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:55:52,427 INFO L225 Difference]: With dead ends: 2238 [2024-11-23 22:55:52,427 INFO L226 Difference]: Without dead ends: 1446 [2024-11-23 22:55:52,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:55:52,429 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 177 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:55:52,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 897 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 22:55:52,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2024-11-23 22:55:52,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1202. [2024-11-23 22:55:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1091 states have (on average 1.3648029330889093) internal successors, (1489), 1091 states have internal predecessors, (1489), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:55:52,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1689 transitions. [2024-11-23 22:55:52,521 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1689 transitions. Word has length 154 [2024-11-23 22:55:52,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:55:52,521 INFO L471 AbstractCegarLoop]: Abstraction has 1202 states and 1689 transitions. [2024-11-23 22:55:52,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:55:52,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1689 transitions. [2024-11-23 22:55:52,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-23 22:55:52,522 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:55:52,523 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:52,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-23 22:55:52,523 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:55:52,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:52,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1554249513, now seen corresponding path program 1 times [2024-11-23 22:55:52,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:52,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457266587] [2024-11-23 22:55:52,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:52,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:55:55,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:55,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457266587] [2024-11-23 22:55:55,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457266587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:55:55,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:55:55,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-23 22:55:55,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443092013] [2024-11-23 22:55:55,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:55:55,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:55:55,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:55,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:55:55,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:55:55,755 INFO L87 Difference]: Start difference. First operand 1202 states and 1689 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:55:57,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:55:57,902 INFO L93 Difference]: Finished difference Result 2112 states and 2984 transitions. [2024-11-23 22:55:57,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:55:57,903 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2024-11-23 22:55:57,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:55:57,907 INFO L225 Difference]: With dead ends: 2112 [2024-11-23 22:55:57,907 INFO L226 Difference]: Without dead ends: 1300 [2024-11-23 22:55:57,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:55:57,909 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 401 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 22:55:57,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 680 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 22:55:57,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2024-11-23 22:55:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1222. [2024-11-23 22:55:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1111 states have (on average 1.3582358235823582) internal successors, (1509), 1111 states have internal predecessors, (1509), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:55:58,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1709 transitions. [2024-11-23 22:55:58,006 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1709 transitions. Word has length 154 [2024-11-23 22:55:58,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:55:58,007 INFO L471 AbstractCegarLoop]: Abstraction has 1222 states and 1709 transitions. [2024-11-23 22:55:58,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:55:58,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1709 transitions. [2024-11-23 22:55:58,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-23 22:55:58,008 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:55:58,008 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:55:58,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-23 22:55:58,008 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:55:58,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:58,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1719649429, now seen corresponding path program 1 times [2024-11-23 22:55:58,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:58,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997201640] [2024-11-23 22:55:58,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:55:58,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:56:19,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:19,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997201640] [2024-11-23 22:56:19,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997201640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:19,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:56:19,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-23 22:56:19,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001875051] [2024-11-23 22:56:19,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:19,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 22:56:19,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:19,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 22:56:19,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:56:19,032 INFO L87 Difference]: Start difference. First operand 1222 states and 1709 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:56:25,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:25,720 INFO L93 Difference]: Finished difference Result 1817 states and 2400 transitions. [2024-11-23 22:56:25,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-23 22:56:25,721 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2024-11-23 22:56:25,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:25,726 INFO L225 Difference]: With dead ends: 1817 [2024-11-23 22:56:25,726 INFO L226 Difference]: Without dead ends: 1815 [2024-11-23 22:56:25,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=489, Invalid=1863, Unknown=0, NotChecked=0, Total=2352 [2024-11-23 22:56:25,728 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 584 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:25,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 982 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-23 22:56:25,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2024-11-23 22:56:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1234. [2024-11-23 22:56:25,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1123 states have (on average 1.3615316117542298) internal successors, (1529), 1123 states have internal predecessors, (1529), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:56:25,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1729 transitions. [2024-11-23 22:56:25,880 INFO L78 Accepts]: Start accepts. Automaton has 1234 states and 1729 transitions. Word has length 154 [2024-11-23 22:56:25,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:25,881 INFO L471 AbstractCegarLoop]: Abstraction has 1234 states and 1729 transitions. [2024-11-23 22:56:25,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:56:25,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1234 states and 1729 transitions. [2024-11-23 22:56:25,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-23 22:56:25,883 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:25,883 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:25,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-23 22:56:25,883 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:25,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:25,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1657609815, now seen corresponding path program 1 times [2024-11-23 22:56:25,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:25,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30400038] [2024-11-23 22:56:25,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:25,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:56:27,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:27,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30400038] [2024-11-23 22:56:27,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30400038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:27,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:56:27,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:56:27,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802005606] [2024-11-23 22:56:27,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:27,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:56:27,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:27,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:56:27,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:56:27,876 INFO L87 Difference]: Start difference. First operand 1234 states and 1729 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:56:29,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:29,719 INFO L93 Difference]: Finished difference Result 2513 states and 3465 transitions. [2024-11-23 22:56:29,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:56:29,720 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2024-11-23 22:56:29,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:29,727 INFO L225 Difference]: With dead ends: 2513 [2024-11-23 22:56:29,727 INFO L226 Difference]: Without dead ends: 1603 [2024-11-23 22:56:29,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:56:29,730 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 290 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:29,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 794 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-23 22:56:29,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2024-11-23 22:56:29,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1248. [2024-11-23 22:56:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1137 states have (on average 1.3562005277044855) internal successors, (1542), 1137 states have internal predecessors, (1542), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:56:29,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1742 transitions. [2024-11-23 22:56:29,857 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1742 transitions. Word has length 154 [2024-11-23 22:56:29,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:29,857 INFO L471 AbstractCegarLoop]: Abstraction has 1248 states and 1742 transitions. [2024-11-23 22:56:29,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:56:29,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1742 transitions. [2024-11-23 22:56:29,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-23 22:56:29,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:29,859 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:29,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-23 22:56:29,859 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:29,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:29,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2085866209, now seen corresponding path program 1 times [2024-11-23 22:56:29,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:29,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894736591] [2024-11-23 22:56:29,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:29,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:56:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:56:35,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:35,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894736591] [2024-11-23 22:56:35,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894736591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:35,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:56:35,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-23 22:56:35,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923083051] [2024-11-23 22:56:35,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:35,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 22:56:35,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:35,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 22:56:35,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:56:35,640 INFO L87 Difference]: Start difference. First operand 1248 states and 1742 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:56:46,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:56:46,261 INFO L93 Difference]: Finished difference Result 1647 states and 2204 transitions. [2024-11-23 22:56:46,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 22:56:46,261 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2024-11-23 22:56:46,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:56:46,267 INFO L225 Difference]: With dead ends: 1647 [2024-11-23 22:56:46,267 INFO L226 Difference]: Without dead ends: 1645 [2024-11-23 22:56:46,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=294, Invalid=1346, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 22:56:46,269 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 371 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:56:46,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1004 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-23 22:56:46,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2024-11-23 22:56:46,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1330. [2024-11-23 22:56:46,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1219 states have (on average 1.3552091878589008) internal successors, (1652), 1219 states have internal predecessors, (1652), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:56:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1852 transitions. [2024-11-23 22:56:46,436 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1852 transitions. Word has length 155 [2024-11-23 22:56:46,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:56:46,437 INFO L471 AbstractCegarLoop]: Abstraction has 1330 states and 1852 transitions. [2024-11-23 22:56:46,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:56:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1852 transitions. [2024-11-23 22:56:46,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-23 22:56:46,439 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:56:46,439 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:46,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-23 22:56:46,439 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:56:46,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:46,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1056506911, now seen corresponding path program 1 times [2024-11-23 22:56:46,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:46,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272528917] [2024-11-23 22:56:46,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:56:46,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:57:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:57:13,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:57:13,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272528917] [2024-11-23 22:57:13,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272528917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:57:13,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:57:13,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-23 22:57:13,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552376568] [2024-11-23 22:57:13,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:57:13,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 22:57:13,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:57:13,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 22:57:13,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:57:13,558 INFO L87 Difference]: Start difference. First operand 1330 states and 1852 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:57:20,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:57:20,913 INFO L93 Difference]: Finished difference Result 1494 states and 2024 transitions. [2024-11-23 22:57:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-23 22:57:20,914 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2024-11-23 22:57:20,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:57:20,917 INFO L225 Difference]: With dead ends: 1494 [2024-11-23 22:57:20,917 INFO L226 Difference]: Without dead ends: 1492 [2024-11-23 22:57:20,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=456, Invalid=1800, Unknown=0, NotChecked=0, Total=2256 [2024-11-23 22:57:20,918 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 433 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:57:20,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 841 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-23 22:57:20,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2024-11-23 22:57:21,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1272. [2024-11-23 22:57:21,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1161 states have (on average 1.3505598621877692) internal successors, (1568), 1161 states have internal predecessors, (1568), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:57:21,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1768 transitions. [2024-11-23 22:57:21,067 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1768 transitions. Word has length 155 [2024-11-23 22:57:21,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:57:21,068 INFO L471 AbstractCegarLoop]: Abstraction has 1272 states and 1768 transitions. [2024-11-23 22:57:21,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:57:21,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1768 transitions. [2024-11-23 22:57:21,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-23 22:57:21,070 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:57:21,070 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:21,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-23 22:57:21,070 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:57:21,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:57:21,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1605726636, now seen corresponding path program 1 times [2024-11-23 22:57:21,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:57:21,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255275146] [2024-11-23 22:57:21,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:57:21,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:57:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:57:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:57:47,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:57:47,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255275146] [2024-11-23 22:57:47,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255275146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:57:47,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:57:47,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-23 22:57:47,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425391912] [2024-11-23 22:57:47,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:57:47,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 22:57:47,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:57:47,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 22:57:47,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:57:47,827 INFO L87 Difference]: Start difference. First operand 1272 states and 1768 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:57:54,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:57:54,864 INFO L93 Difference]: Finished difference Result 1659 states and 2220 transitions. [2024-11-23 22:57:54,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 22:57:54,864 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2024-11-23 22:57:54,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:57:54,869 INFO L225 Difference]: With dead ends: 1659 [2024-11-23 22:57:54,869 INFO L226 Difference]: Without dead ends: 1657 [2024-11-23 22:57:54,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=235, Invalid=1097, Unknown=0, NotChecked=0, Total=1332 [2024-11-23 22:57:54,871 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 371 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 2058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:57:54,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1050 Invalid, 2058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-23 22:57:54,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2024-11-23 22:57:54,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1324. [2024-11-23 22:57:54,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1213 states have (on average 1.3561417971970322) internal successors, (1645), 1213 states have internal predecessors, (1645), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:57:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1845 transitions. [2024-11-23 22:57:54,972 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1845 transitions. Word has length 158 [2024-11-23 22:57:54,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:57:54,973 INFO L471 AbstractCegarLoop]: Abstraction has 1324 states and 1845 transitions. [2024-11-23 22:57:54,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:57:54,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1845 transitions. [2024-11-23 22:57:54,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-23 22:57:54,975 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:57:54,975 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:54,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-23 22:57:54,976 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:57:54,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:57:54,976 INFO L85 PathProgramCache]: Analyzing trace with hash -766012626, now seen corresponding path program 1 times [2024-11-23 22:57:54,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:57:54,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254111906] [2024-11-23 22:57:54,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:57:54,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:57:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:57:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:57:56,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:57:56,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254111906] [2024-11-23 22:57:56,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254111906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:57:56,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:57:56,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-23 22:57:56,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222222996] [2024-11-23 22:57:56,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:57:56,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:57:56,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:57:56,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:57:56,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:57:56,084 INFO L87 Difference]: Start difference. First operand 1324 states and 1845 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:57:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:57:57,774 INFO L93 Difference]: Finished difference Result 2385 states and 3320 transitions. [2024-11-23 22:57:57,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 22:57:57,774 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2024-11-23 22:57:57,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:57:57,779 INFO L225 Difference]: With dead ends: 2385 [2024-11-23 22:57:57,779 INFO L226 Difference]: Without dead ends: 1530 [2024-11-23 22:57:57,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2024-11-23 22:57:57,782 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 236 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:57:57,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 648 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 22:57:57,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2024-11-23 22:57:57,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1324. [2024-11-23 22:57:57,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1213 states have (on average 1.3553173948887056) internal successors, (1644), 1213 states have internal predecessors, (1644), 100 states have call successors, (100), 10 states have call predecessors, (100), 10 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:57:57,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1844 transitions. [2024-11-23 22:57:57,935 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1844 transitions. Word has length 158 [2024-11-23 22:57:57,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:57:57,936 INFO L471 AbstractCegarLoop]: Abstraction has 1324 states and 1844 transitions. [2024-11-23 22:57:57,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:57:57,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1844 transitions. [2024-11-23 22:57:57,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-23 22:57:57,937 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:57:57,938 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:57,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-23 22:57:57,938 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:57:57,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:57:57,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2029373358, now seen corresponding path program 1 times [2024-11-23 22:57:57,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:57:57,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630756871] [2024-11-23 22:57:57,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:57:57,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:57:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:58:15,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:15,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630756871] [2024-11-23 22:58:15,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630756871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:15,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:15,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-23 22:58:15,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102362454] [2024-11-23 22:58:15,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:15,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 22:58:15,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:15,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 22:58:15,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:58:15,083 INFO L87 Difference]: Start difference. First operand 1324 states and 1844 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-23 22:58:19,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:19,421 INFO L93 Difference]: Finished difference Result 1983 states and 2616 transitions. [2024-11-23 22:58:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 22:58:19,422 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 158 [2024-11-23 22:58:19,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:19,430 INFO L225 Difference]: With dead ends: 1983 [2024-11-23 22:58:19,430 INFO L226 Difference]: Without dead ends: 1981 [2024-11-23 22:58:19,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1334, Unknown=0, NotChecked=0, Total=1640 [2024-11-23 22:58:19,432 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 703 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:19,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 1003 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-23 22:58:19,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2024-11-23 22:58:19,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1359. [2024-11-23 22:58:19,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1247 states have (on average 1.359262229350441) internal successors, (1695), 1247 states have internal predecessors, (1695), 100 states have call successors, (100), 11 states have call predecessors, (100), 11 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:58:19,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1895 transitions. [2024-11-23 22:58:19,528 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1895 transitions. Word has length 158 [2024-11-23 22:58:19,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:19,528 INFO L471 AbstractCegarLoop]: Abstraction has 1359 states and 1895 transitions. [2024-11-23 22:58:19,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-23 22:58:19,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1895 transitions. [2024-11-23 22:58:19,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-23 22:58:19,530 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:19,530 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:19,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-23 22:58:19,531 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:19,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:19,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1967333744, now seen corresponding path program 1 times [2024-11-23 22:58:19,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:19,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990144818] [2024-11-23 22:58:19,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:19,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:58:42,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:42,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990144818] [2024-11-23 22:58:42,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990144818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:42,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:42,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-23 22:58:42,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913988083] [2024-11-23 22:58:42,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:42,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 22:58:42,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:42,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 22:58:42,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:58:42,164 INFO L87 Difference]: Start difference. First operand 1359 states and 1895 transitions. Second operand has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:58:46,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:46,330 INFO L93 Difference]: Finished difference Result 1515 states and 2059 transitions. [2024-11-23 22:58:46,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-23 22:58:46,330 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2024-11-23 22:58:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:46,335 INFO L225 Difference]: With dead ends: 1515 [2024-11-23 22:58:46,335 INFO L226 Difference]: Without dead ends: 1513 [2024-11-23 22:58:46,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=214, Invalid=778, Unknown=0, NotChecked=0, Total=992 [2024-11-23 22:58:46,337 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 313 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:46,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 998 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-23 22:58:46,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2024-11-23 22:58:46,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1348. [2024-11-23 22:58:46,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1236 states have (on average 1.36084142394822) internal successors, (1682), 1236 states have internal predecessors, (1682), 100 states have call successors, (100), 11 states have call predecessors, (100), 11 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:58:46,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1882 transitions. [2024-11-23 22:58:46,491 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1882 transitions. Word has length 158 [2024-11-23 22:58:46,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:46,492 INFO L471 AbstractCegarLoop]: Abstraction has 1348 states and 1882 transitions. [2024-11-23 22:58:46,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:58:46,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1882 transitions. [2024-11-23 22:58:46,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-23 22:58:46,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:46,494 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:46,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-23 22:58:46,495 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:46,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:46,495 INFO L85 PathProgramCache]: Analyzing trace with hash -342365904, now seen corresponding path program 1 times [2024-11-23 22:58:46,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:46,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818967087] [2024-11-23 22:58:46,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:46,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:58:47,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:47,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818967087] [2024-11-23 22:58:47,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818967087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:47,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:47,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 22:58:47,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090456872] [2024-11-23 22:58:47,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:47,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:58:47,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:47,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:58:47,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:58:47,054 INFO L87 Difference]: Start difference. First operand 1348 states and 1882 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:58:48,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:48,018 INFO L93 Difference]: Finished difference Result 2246 states and 3162 transitions. [2024-11-23 22:58:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:58:48,019 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2024-11-23 22:58:48,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:48,023 INFO L225 Difference]: With dead ends: 2246 [2024-11-23 22:58:48,023 INFO L226 Difference]: Without dead ends: 1391 [2024-11-23 22:58:48,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:58:48,025 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 154 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:48,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 639 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 22:58:48,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2024-11-23 22:58:48,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1287. [2024-11-23 22:58:48,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1175 states have (on average 1.3693617021276596) internal successors, (1609), 1175 states have internal predecessors, (1609), 100 states have call successors, (100), 11 states have call predecessors, (100), 11 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:58:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1809 transitions. [2024-11-23 22:58:48,114 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1809 transitions. Word has length 158 [2024-11-23 22:58:48,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:48,114 INFO L471 AbstractCegarLoop]: Abstraction has 1287 states and 1809 transitions. [2024-11-23 22:58:48,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:58:48,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1809 transitions. [2024-11-23 22:58:48,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-23 22:58:48,116 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:48,116 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:48,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-23 22:58:48,116 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:48,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:48,117 INFO L85 PathProgramCache]: Analyzing trace with hash 222646952, now seen corresponding path program 1 times [2024-11-23 22:58:48,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:48,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798265222] [2024-11-23 22:58:48,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:48,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:59:06,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:06,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798265222] [2024-11-23 22:59:06,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798265222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:06,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:06,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-23 22:59:06,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799395895] [2024-11-23 22:59:06,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:06,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 22:59:06,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:06,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 22:59:06,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:59:06,879 INFO L87 Difference]: Start difference. First operand 1287 states and 1809 transitions. Second operand has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:59:11,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:11,766 INFO L93 Difference]: Finished difference Result 1393 states and 1920 transitions. [2024-11-23 22:59:11,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 22:59:11,767 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2024-11-23 22:59:11,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:11,771 INFO L225 Difference]: With dead ends: 1393 [2024-11-23 22:59:11,771 INFO L226 Difference]: Without dead ends: 1391 [2024-11-23 22:59:11,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2024-11-23 22:59:11,772 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 356 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:11,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 900 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-23 22:59:11,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2024-11-23 22:59:11,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1225. [2024-11-23 22:59:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1113 states have (on average 1.3683737646001797) internal successors, (1523), 1113 states have internal predecessors, (1523), 100 states have call successors, (100), 11 states have call predecessors, (100), 11 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:59:11,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1723 transitions. [2024-11-23 22:59:11,940 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1723 transitions. Word has length 159 [2024-11-23 22:59:11,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:11,940 INFO L471 AbstractCegarLoop]: Abstraction has 1225 states and 1723 transitions. [2024-11-23 22:59:11,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.263157894736842) internal successors, (62), 19 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-23 22:59:11,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1723 transitions. [2024-11-23 22:59:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-23 22:59:11,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:11,942 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:59:11,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-23 22:59:11,943 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:11,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash 801312113, now seen corresponding path program 1 times [2024-11-23 22:59:11,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:11,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642895388] [2024-11-23 22:59:11,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:11,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-23 22:59:13,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:13,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642895388] [2024-11-23 22:59:13,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642895388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:13,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:13,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:59:13,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839995653] [2024-11-23 22:59:13,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:13,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:59:13,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:13,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:59:13,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:59:13,670 INFO L87 Difference]: Start difference. First operand 1225 states and 1723 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:59:14,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:14,761 INFO L93 Difference]: Finished difference Result 2255 states and 3169 transitions. [2024-11-23 22:59:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:59:14,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2024-11-23 22:59:14,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:14,766 INFO L225 Difference]: With dead ends: 2255 [2024-11-23 22:59:14,766 INFO L226 Difference]: Without dead ends: 1374 [2024-11-23 22:59:14,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:59:14,769 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 166 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:14,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 608 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 22:59:14,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2024-11-23 22:59:14,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1189. [2024-11-23 22:59:14,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1077 states have (on average 1.3593314763231197) internal successors, (1464), 1077 states have internal predecessors, (1464), 100 states have call successors, (100), 11 states have call predecessors, (100), 11 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-23 22:59:14,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1664 transitions. [2024-11-23 22:59:14,948 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1664 transitions. Word has length 159 [2024-11-23 22:59:14,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:14,948 INFO L471 AbstractCegarLoop]: Abstraction has 1189 states and 1664 transitions. [2024-11-23 22:59:14,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-23 22:59:14,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1664 transitions. [2024-11-23 22:59:14,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-23 22:59:14,952 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:14,952 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:14,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-23 22:59:14,953 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:14,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:14,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1822626617, now seen corresponding path program 1 times [2024-11-23 22:59:14,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:14,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855874402] [2024-11-23 22:59:14,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:14,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:15,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-23 22:59:15,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:15,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855874402] [2024-11-23 22:59:15,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855874402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:15,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818673673] [2024-11-23 22:59:15,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:15,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:15,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:15,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:15,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:59:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:15,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 22:59:15,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 1656 proven. 2 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2024-11-23 22:59:15,960 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:59:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-23 22:59:16,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818673673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:59:16,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:59:16,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 10 [2024-11-23 22:59:16,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98883028] [2024-11-23 22:59:16,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:59:16,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:59:16,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:16,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:59:16,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:59:16,376 INFO L87 Difference]: Start difference. First operand 1189 states and 1664 transitions. Second operand has 10 states, 10 states have (on average 18.0) internal successors, (180), 10 states have internal predecessors, (180), 4 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-23 22:59:17,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:17,268 INFO L93 Difference]: Finished difference Result 4228 states and 5974 transitions. [2024-11-23 22:59:17,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 22:59:17,269 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.0) internal successors, (180), 10 states have internal predecessors, (180), 4 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 285 [2024-11-23 22:59:17,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:17,277 INFO L225 Difference]: With dead ends: 4228 [2024-11-23 22:59:17,277 INFO L226 Difference]: Without dead ends: 3836 [2024-11-23 22:59:17,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:59:17,280 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 851 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:17,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1005 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 22:59:17,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3836 states. [2024-11-23 22:59:17,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3836 to 1931. [2024-11-23 22:59:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1767 states have (on average 1.357668364459536) internal successors, (2399), 1771 states have internal predecessors, (2399), 144 states have call successors, (144), 19 states have call predecessors, (144), 19 states have return successors, (144), 140 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 22:59:17,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 2687 transitions. [2024-11-23 22:59:17,519 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 2687 transitions. Word has length 285 [2024-11-23 22:59:17,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:17,520 INFO L471 AbstractCegarLoop]: Abstraction has 1931 states and 2687 transitions. [2024-11-23 22:59:17,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.0) internal successors, (180), 10 states have internal predecessors, (180), 4 states have call successors, (80), 2 states have call predecessors, (80), 2 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-23 22:59:17,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 2687 transitions. [2024-11-23 22:59:17,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-23 22:59:17,524 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:17,524 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:17,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 22:59:17,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:17,725 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:17,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:17,726 INFO L85 PathProgramCache]: Analyzing trace with hash -372602249, now seen corresponding path program 1 times [2024-11-23 22:59:17,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:17,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209283516] [2024-11-23 22:59:17,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:17,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-23 22:59:17,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:17,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209283516] [2024-11-23 22:59:17,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209283516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:17,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:59:17,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:59:17,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430998734] [2024-11-23 22:59:17,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:17,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:59:17,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:17,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:59:17,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:59:17,842 INFO L87 Difference]: Start difference. First operand 1931 states and 2687 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-23 22:59:18,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:18,031 INFO L93 Difference]: Finished difference Result 3329 states and 4719 transitions. [2024-11-23 22:59:18,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:59:18,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 285 [2024-11-23 22:59:18,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:18,039 INFO L225 Difference]: With dead ends: 3329 [2024-11-23 22:59:18,039 INFO L226 Difference]: Without dead ends: 1928 [2024-11-23 22:59:18,042 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 22:59:18,042 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 70 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:18,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 388 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:59:18,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2024-11-23 22:59:18,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1926. [2024-11-23 22:59:18,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1926 states, 1762 states have (on average 1.3530079455164585) internal successors, (2384), 1766 states have internal predecessors, (2384), 144 states have call successors, (144), 19 states have call predecessors, (144), 19 states have return successors, (144), 140 states have call predecessors, (144), 144 states have call successors, (144) [2024-11-23 22:59:18,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1926 states to 1926 states and 2672 transitions. [2024-11-23 22:59:18,266 INFO L78 Accepts]: Start accepts. Automaton has 1926 states and 2672 transitions. Word has length 285 [2024-11-23 22:59:18,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:18,267 INFO L471 AbstractCegarLoop]: Abstraction has 1926 states and 2672 transitions. [2024-11-23 22:59:18,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-11-23 22:59:18,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1926 states and 2672 transitions. [2024-11-23 22:59:18,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-23 22:59:18,271 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:18,272 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:18,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-23 22:59:18,272 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:18,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:18,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1652465927, now seen corresponding path program 1 times [2024-11-23 22:59:18,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:18,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412493026] [2024-11-23 22:59:18,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:18,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 16 proven. 42 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-23 22:59:19,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:19,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412493026] [2024-11-23 22:59:19,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412493026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:19,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801402760] [2024-11-23 22:59:19,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:19,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:19,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:19,083 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:19,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 22:59:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:19,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-23 22:59:19,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 17 proven. 1641 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2024-11-23 22:59:21,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:59:21,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801402760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:21,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:59:21,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2024-11-23 22:59:21,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356793027] [2024-11-23 22:59:21,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 22:59:21,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 22:59:21,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:21,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 22:59:21,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:59:21,668 INFO L87 Difference]: Start difference. First operand 1926 states and 2672 transitions. Second operand has 16 states, 16 states have (on average 9.9375) internal successors, (159), 16 states have internal predecessors, (159), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-23 22:59:23,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:23,592 INFO L93 Difference]: Finished difference Result 5689 states and 8037 transitions. [2024-11-23 22:59:23,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 22:59:23,592 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.9375) internal successors, (159), 16 states have internal predecessors, (159), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 285 [2024-11-23 22:59:23,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:23,599 INFO L225 Difference]: With dead ends: 5689 [2024-11-23 22:59:23,599 INFO L226 Difference]: Without dead ends: 4293 [2024-11-23 22:59:23,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2024-11-23 22:59:23,602 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 1132 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:23,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 1619 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 22:59:23,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4293 states. [2024-11-23 22:59:23,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4293 to 2876. [2024-11-23 22:59:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2876 states, 2572 states have (on average 1.3518662519440123) internal successors, (3477), 2580 states have internal predecessors, (3477), 268 states have call successors, (268), 35 states have call predecessors, (268), 35 states have return successors, (268), 260 states have call predecessors, (268), 268 states have call successors, (268) [2024-11-23 22:59:23,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 4013 transitions. [2024-11-23 22:59:23,936 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 4013 transitions. Word has length 285 [2024-11-23 22:59:23,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:23,937 INFO L471 AbstractCegarLoop]: Abstraction has 2876 states and 4013 transitions. [2024-11-23 22:59:23,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.9375) internal successors, (159), 16 states have internal predecessors, (159), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-23 22:59:23,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 4013 transitions. [2024-11-23 22:59:23,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-11-23 22:59:23,943 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:23,943 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:23,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 22:59:24,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-23 22:59:24,144 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:24,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:24,144 INFO L85 PathProgramCache]: Analyzing trace with hash 648977004, now seen corresponding path program 1 times [2024-11-23 22:59:24,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:24,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387803823] [2024-11-23 22:59:24,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:24,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 7 proven. 52 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-23 22:59:28,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:28,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387803823] [2024-11-23 22:59:28,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387803823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:28,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977368773] [2024-11-23 22:59:28,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:28,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:28,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:28,315 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:28,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 22:59:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:29,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-23 22:59:29,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 361 proven. 1680 refuted. 0 times theorem prover too weak. 1138 trivial. 0 not checked. [2024-11-23 22:59:31,950 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:59:32,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977368773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:32,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:59:32,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 29 [2024-11-23 22:59:32,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202034361] [2024-11-23 22:59:32,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 22:59:32,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-23 22:59:32,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:32,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-23 22:59:32,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2024-11-23 22:59:32,392 INFO L87 Difference]: Start difference. First operand 2876 states and 4013 transitions. Second operand has 29 states, 29 states have (on average 6.172413793103448) internal successors, (179), 29 states have internal predecessors, (179), 6 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 6 states have call predecessors, (80), 6 states have call successors, (80) [2024-11-23 22:59:39,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:59:39,203 INFO L93 Difference]: Finished difference Result 7085 states and 9884 transitions. [2024-11-23 22:59:39,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-23 22:59:39,204 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.172413793103448) internal successors, (179), 29 states have internal predecessors, (179), 6 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 6 states have call predecessors, (80), 6 states have call successors, (80) Word has length 286 [2024-11-23 22:59:39,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:59:39,214 INFO L225 Difference]: With dead ends: 7085 [2024-11-23 22:59:39,214 INFO L226 Difference]: Without dead ends: 4775 [2024-11-23 22:59:39,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 313 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1755 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1056, Invalid=5586, Unknown=0, NotChecked=0, Total=6642 [2024-11-23 22:59:39,221 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 2362 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 3458 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2362 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 3964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 3458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-23 22:59:39,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2362 Valid, 1807 Invalid, 3964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 3458 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-23 22:59:39,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2024-11-23 22:59:39,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 3473. [2024-11-23 22:59:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3473 states, 3090 states have (on average 1.3372168284789645) internal successors, (4132), 3100 states have internal predecessors, (4132), 330 states have call successors, (330), 52 states have call predecessors, (330), 52 states have return successors, (330), 320 states have call predecessors, (330), 330 states have call successors, (330) [2024-11-23 22:59:39,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3473 states to 3473 states and 4792 transitions. [2024-11-23 22:59:39,783 INFO L78 Accepts]: Start accepts. Automaton has 3473 states and 4792 transitions. Word has length 286 [2024-11-23 22:59:39,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:59:39,783 INFO L471 AbstractCegarLoop]: Abstraction has 3473 states and 4792 transitions. [2024-11-23 22:59:39,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.172413793103448) internal successors, (179), 29 states have internal predecessors, (179), 6 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 6 states have call predecessors, (80), 6 states have call successors, (80) [2024-11-23 22:59:39,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3473 states and 4792 transitions. [2024-11-23 22:59:39,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-11-23 22:59:39,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:59:39,791 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:39,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 22:59:39,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-23 22:59:39,992 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:59:39,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:39,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1412352866, now seen corresponding path program 1 times [2024-11-23 22:59:39,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:39,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466925568] [2024-11-23 22:59:39,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:39,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 3 proven. 55 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-23 22:59:51,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:51,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466925568] [2024-11-23 22:59:51,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466925568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:51,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519703315] [2024-11-23 22:59:51,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:51,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:51,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:51,718 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:51,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 22:59:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:52,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-23 22:59:52,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 359 proven. 1681 refuted. 0 times theorem prover too weak. 1138 trivial. 0 not checked. [2024-11-23 22:59:54,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:59:55,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 34 proven. 141 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-11-23 22:59:55,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519703315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:59:55,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:59:55,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 10, 11] total 42 [2024-11-23 22:59:55,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559866086] [2024-11-23 22:59:55,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:59:55,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-23 22:59:55,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:55,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-23 22:59:55,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1591, Unknown=0, NotChecked=0, Total=1722 [2024-11-23 22:59:55,843 INFO L87 Difference]: Start difference. First operand 3473 states and 4792 transitions. Second operand has 42 states, 42 states have (on average 6.119047619047619) internal successors, (257), 42 states have internal predecessors, (257), 9 states have call successors, (120), 4 states have call predecessors, (120), 6 states have return successors, (120), 9 states have call predecessors, (120), 9 states have call successors, (120) [2024-11-23 23:00:25,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 23:00:26,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 23:00:27,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 23:00:44,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:00:44,272 INFO L93 Difference]: Finished difference Result 9191 states and 12797 transitions. [2024-11-23 23:00:44,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-23 23:00:44,272 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.119047619047619) internal successors, (257), 42 states have internal predecessors, (257), 9 states have call successors, (120), 4 states have call predecessors, (120), 6 states have return successors, (120), 9 states have call predecessors, (120), 9 states have call successors, (120) Word has length 287 [2024-11-23 23:00:44,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:00:44,284 INFO L225 Difference]: With dead ends: 9191 [2024-11-23 23:00:44,284 INFO L226 Difference]: Without dead ends: 6357 [2024-11-23 23:00:44,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3745 ImplicationChecksByTransitivity, 32.1s TimeCoverageRelationStatistics Valid=2053, Invalid=11989, Unknown=0, NotChecked=0, Total=14042 [2024-11-23 23:00:44,293 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 3904 mSDsluCounter, 2768 mSDsCounter, 0 mSdLazyCounter, 7320 mSolverCounterSat, 827 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3917 SdHoareTripleChecker+Valid, 2940 SdHoareTripleChecker+Invalid, 8147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 827 IncrementalHoareTripleChecker+Valid, 7320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:00:44,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3917 Valid, 2940 Invalid, 8147 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [827 Valid, 7320 Invalid, 0 Unknown, 0 Unchecked, 20.3s Time] [2024-11-23 23:00:44,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6357 states. [2024-11-23 23:00:45,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6357 to 4641. [2024-11-23 23:00:45,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4641 states, 4021 states have (on average 1.332255657796568) internal successors, (5357), 4037 states have internal predecessors, (5357), 536 states have call successors, (536), 83 states have call predecessors, (536), 83 states have return successors, (536), 520 states have call predecessors, (536), 536 states have call successors, (536) [2024-11-23 23:00:45,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4641 states to 4641 states and 6429 transitions. [2024-11-23 23:00:45,022 INFO L78 Accepts]: Start accepts. Automaton has 4641 states and 6429 transitions. Word has length 287 [2024-11-23 23:00:45,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:00:45,023 INFO L471 AbstractCegarLoop]: Abstraction has 4641 states and 6429 transitions. [2024-11-23 23:00:45,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.119047619047619) internal successors, (257), 42 states have internal predecessors, (257), 9 states have call successors, (120), 4 states have call predecessors, (120), 6 states have return successors, (120), 9 states have call predecessors, (120), 9 states have call successors, (120) [2024-11-23 23:00:45,023 INFO L276 IsEmpty]: Start isEmpty. Operand 4641 states and 6429 transitions. [2024-11-23 23:00:45,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-23 23:00:45,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:00:45,030 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:00:45,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 23:00:45,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-23 23:00:45,230 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:00:45,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:00:45,231 INFO L85 PathProgramCache]: Analyzing trace with hash -419369405, now seen corresponding path program 1 times [2024-11-23 23:00:45,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:00:45,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366655167] [2024-11-23 23:00:45,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:45,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:00:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 10 proven. 48 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-23 23:00:46,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:00:46,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366655167] [2024-11-23 23:00:46,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366655167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:00:46,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125967487] [2024-11-23 23:00:46,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:00:46,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:00:46,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:00:46,824 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:00:46,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:00:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:00:47,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-23 23:00:47,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:00:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 4 proven. 1654 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2024-11-23 23:00:49,085 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:00:53,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125967487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:00:53,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:00:53,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15] total 22 [2024-11-23 23:00:53,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551753020] [2024-11-23 23:00:53,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:00:53,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:00:53,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:00:53,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:00:53,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2024-11-23 23:00:53,840 INFO L87 Difference]: Start difference. First operand 4641 states and 6429 transitions. Second operand has 22 states, 22 states have (on average 8.227272727272727) internal successors, (181), 22 states have internal predecessors, (181), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-23 23:01:02,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:01:02,379 INFO L93 Difference]: Finished difference Result 11806 states and 16472 transitions. [2024-11-23 23:01:02,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-23 23:01:02,380 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.227272727272727) internal successors, (181), 22 states have internal predecessors, (181), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 288 [2024-11-23 23:01:02,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:01:02,394 INFO L225 Difference]: With dead ends: 11806 [2024-11-23 23:01:02,395 INFO L226 Difference]: Without dead ends: 8244 [2024-11-23 23:01:02,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1171, Invalid=5309, Unknown=0, NotChecked=0, Total=6480 [2024-11-23 23:01:02,400 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 2105 mSDsluCounter, 2811 mSDsCounter, 0 mSdLazyCounter, 2658 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 2658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:01:02,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2105 Valid, 3079 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 2658 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-23 23:01:02,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8244 states. [2024-11-23 23:01:03,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8244 to 7505. [2024-11-23 23:01:03,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7505 states, 6498 states have (on average 1.3362573099415205) internal successors, (8683), 6521 states have internal predecessors, (8683), 873 states have call successors, (873), 133 states have call predecessors, (873), 133 states have return successors, (873), 850 states have call predecessors, (873), 873 states have call successors, (873) [2024-11-23 23:01:03,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7505 states to 7505 states and 10429 transitions. [2024-11-23 23:01:03,759 INFO L78 Accepts]: Start accepts. Automaton has 7505 states and 10429 transitions. Word has length 288 [2024-11-23 23:01:03,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:01:03,760 INFO L471 AbstractCegarLoop]: Abstraction has 7505 states and 10429 transitions. [2024-11-23 23:01:03,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.227272727272727) internal successors, (181), 22 states have internal predecessors, (181), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-23 23:01:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand 7505 states and 10429 transitions. [2024-11-23 23:01:03,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-23 23:01:03,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:01:03,768 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:01:03,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-23 23:01:03,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-11-23 23:01:03,969 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:01:03,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:01:03,969 INFO L85 PathProgramCache]: Analyzing trace with hash 989745219, now seen corresponding path program 1 times [2024-11-23 23:01:03,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:01:03,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126487392] [2024-11-23 23:01:03,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:01:03,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:01:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:01:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3177 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-23 23:01:16,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:01:16,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126487392] [2024-11-23 23:01:16,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126487392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:01:16,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41574601] [2024-11-23 23:01:16,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:01:16,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:01:16,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:01:16,896 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:01:16,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:01:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:01:17,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-23 23:01:17,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:01:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3177 backedges. 611 proven. 1800 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2024-11-23 23:01:23,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:01:25,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41574601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:01:25,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:01:25,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24] total 42 [2024-11-23 23:01:25,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850496857] [2024-11-23 23:01:25,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:01:25,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-23 23:01:25,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:01:25,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-23 23:01:25,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1999, Unknown=0, NotChecked=0, Total=2162 [2024-11-23 23:01:25,020 INFO L87 Difference]: Start difference. First operand 7505 states and 10429 transitions. Second operand has 42 states, 42 states have (on average 4.738095238095238) internal successors, (199), 41 states have internal predecessors, (199), 8 states have call successors, (80), 7 states have call predecessors, (80), 10 states have return successors, (80), 8 states have call predecessors, (80), 8 states have call successors, (80) [2024-11-23 23:01:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:01:50,955 INFO L93 Difference]: Finished difference Result 15922 states and 22084 transitions. [2024-11-23 23:01:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-23 23:01:50,955 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.738095238095238) internal successors, (199), 41 states have internal predecessors, (199), 8 states have call successors, (80), 7 states have call predecessors, (80), 10 states have return successors, (80), 8 states have call predecessors, (80), 8 states have call successors, (80) Word has length 288 [2024-11-23 23:01:50,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:01:50,977 INFO L225 Difference]: With dead ends: 15922 [2024-11-23 23:01:50,977 INFO L226 Difference]: Without dead ends: 8866 [2024-11-23 23:01:50,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 306 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6430 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=1531, Invalid=17929, Unknown=0, NotChecked=0, Total=19460 [2024-11-23 23:01:50,988 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 2220 mSDsluCounter, 3765 mSDsCounter, 0 mSdLazyCounter, 8310 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2220 SdHoareTripleChecker+Valid, 4062 SdHoareTripleChecker+Invalid, 8707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 8310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:01:50,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2220 Valid, 4062 Invalid, 8707 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [397 Valid, 8310 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2024-11-23 23:01:50,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8866 states. [2024-11-23 23:01:52,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8866 to 8004. [2024-11-23 23:01:52,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8004 states, 6849 states have (on average 1.3324572930354797) internal successors, (9126), 6874 states have internal predecessors, (9126), 987 states have call successors, (987), 167 states have call predecessors, (987), 167 states have return successors, (987), 962 states have call predecessors, (987), 987 states have call successors, (987) [2024-11-23 23:01:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8004 states to 8004 states and 11100 transitions. [2024-11-23 23:01:52,543 INFO L78 Accepts]: Start accepts. Automaton has 8004 states and 11100 transitions. Word has length 288 [2024-11-23 23:01:52,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:01:52,544 INFO L471 AbstractCegarLoop]: Abstraction has 8004 states and 11100 transitions. [2024-11-23 23:01:52,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.738095238095238) internal successors, (199), 41 states have internal predecessors, (199), 8 states have call successors, (80), 7 states have call predecessors, (80), 10 states have return successors, (80), 8 states have call predecessors, (80), 8 states have call successors, (80) [2024-11-23 23:01:52,544 INFO L276 IsEmpty]: Start isEmpty. Operand 8004 states and 11100 transitions. [2024-11-23 23:01:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-23 23:01:52,552 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:01:52,552 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:01:52,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 23:01:52,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:01:52,753 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:01:52,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:01:52,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1818550934, now seen corresponding path program 1 times [2024-11-23 23:01:52,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:01:52,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376358436] [2024-11-23 23:01:52,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:01:52,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:01:52,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:01:56,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 10 proven. 49 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-23 23:01:56,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:01:56,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376358436] [2024-11-23 23:01:56,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376358436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:01:56,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310155212] [2024-11-23 23:01:56,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:01:56,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:01:56,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:01:56,467 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:01:56,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:01:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:01:56,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 23:01:56,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:02:00,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 4 proven. 1655 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2024-11-23 23:02:00,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:02:47,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310155212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:02:47,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:02:47,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2024-11-23 23:02:47,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482819483] [2024-11-23 23:02:47,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:02:47,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-23 23:02:47,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:02:47,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-23 23:02:47,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1119, Unknown=2, NotChecked=0, Total=1260 [2024-11-23 23:02:47,384 INFO L87 Difference]: Start difference. First operand 8004 states and 11100 transitions. Second operand has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-23 23:03:06,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:06,978 INFO L93 Difference]: Finished difference Result 25907 states and 35815 transitions. [2024-11-23 23:03:06,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-23 23:03:06,978 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 289 [2024-11-23 23:03:06,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:07,015 INFO L225 Difference]: With dead ends: 25907 [2024-11-23 23:03:07,016 INFO L226 Difference]: Without dead ends: 20036 [2024-11-23 23:03:07,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4167 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=2417, Invalid=11623, Unknown=2, NotChecked=0, Total=14042 [2024-11-23 23:03:07,030 INFO L435 NwaCegarLoop]: 391 mSDtfsCounter, 2940 mSDsluCounter, 4329 mSDsCounter, 0 mSdLazyCounter, 5759 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2940 SdHoareTripleChecker+Valid, 4720 SdHoareTripleChecker+Invalid, 6218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 5759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:07,031 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2940 Valid, 4720 Invalid, 6218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [459 Valid, 5759 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-11-23 23:03:07,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20036 states. [2024-11-23 23:03:09,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20036 to 12415. [2024-11-23 23:03:09,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12415 states, 10514 states have (on average 1.3296556971656839) internal successors, (13980), 10561 states have internal predecessors, (13980), 1621 states have call successors, (1621), 279 states have call predecessors, (1621), 279 states have return successors, (1621), 1574 states have call predecessors, (1621), 1621 states have call successors, (1621) [2024-11-23 23:03:09,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12415 states to 12415 states and 17222 transitions. [2024-11-23 23:03:09,301 INFO L78 Accepts]: Start accepts. Automaton has 12415 states and 17222 transitions. Word has length 289 [2024-11-23 23:03:09,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:09,302 INFO L471 AbstractCegarLoop]: Abstraction has 12415 states and 17222 transitions. [2024-11-23 23:03:09,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-23 23:03:09,302 INFO L276 IsEmpty]: Start isEmpty. Operand 12415 states and 17222 transitions. [2024-11-23 23:03:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-23 23:03:09,311 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:09,311 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:09,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-23 23:03:09,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-23 23:03:09,515 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:09,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:09,515 INFO L85 PathProgramCache]: Analyzing trace with hash -965341800, now seen corresponding path program 1 times [2024-11-23 23:03:09,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:09,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543245623] [2024-11-23 23:03:09,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:09,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:12,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 6 proven. 53 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-23 23:03:12,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:12,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543245623] [2024-11-23 23:03:12,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543245623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:03:12,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130817705] [2024-11-23 23:03:12,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:12,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:03:12,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:03:12,530 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:03:12,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:03:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:13,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-23 23:03:13,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:03:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 165 proven. 1704 refuted. 0 times theorem prover too weak. 1310 trivial. 0 not checked. [2024-11-23 23:03:15,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:03:19,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130817705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:03:19,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:03:19,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 20 [2024-11-23 23:03:19,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586806898] [2024-11-23 23:03:19,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:03:19,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 23:03:19,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:19,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 23:03:19,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2024-11-23 23:03:19,762 INFO L87 Difference]: Start difference. First operand 12415 states and 17222 transitions. Second operand has 20 states, 20 states have (on average 7.7) internal successors, (154), 20 states have internal predecessors, (154), 4 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-23 23:03:26,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:26,245 INFO L93 Difference]: Finished difference Result 28204 states and 39047 transitions. [2024-11-23 23:03:26,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-23 23:03:26,246 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.7) internal successors, (154), 20 states have internal predecessors, (154), 4 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 289 [2024-11-23 23:03:26,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:26,278 INFO L225 Difference]: With dead ends: 28204 [2024-11-23 23:03:26,279 INFO L226 Difference]: Without dead ends: 17320 [2024-11-23 23:03:26,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 315 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=427, Invalid=1553, Unknown=0, NotChecked=0, Total=1980 [2024-11-23 23:03:26,298 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 1367 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:26,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1367 Valid, 1763 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-23 23:03:26,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17320 states. [2024-11-23 23:03:28,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17320 to 12909. [2024-11-23 23:03:28,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12909 states, 10920 states have (on average 1.3263736263736263) internal successors, (14484), 10968 states have internal predecessors, (14484), 1672 states have call successors, (1672), 316 states have call predecessors, (1672), 316 states have return successors, (1672), 1624 states have call predecessors, (1672), 1672 states have call successors, (1672) [2024-11-23 23:03:28,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12909 states to 12909 states and 17828 transitions. [2024-11-23 23:03:28,669 INFO L78 Accepts]: Start accepts. Automaton has 12909 states and 17828 transitions. Word has length 289 [2024-11-23 23:03:28,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:28,669 INFO L471 AbstractCegarLoop]: Abstraction has 12909 states and 17828 transitions. [2024-11-23 23:03:28,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.7) internal successors, (154), 20 states have internal predecessors, (154), 4 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-11-23 23:03:28,670 INFO L276 IsEmpty]: Start isEmpty. Operand 12909 states and 17828 transitions. [2024-11-23 23:03:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-23 23:03:28,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:28,678 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:28,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:03:28,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2fbe0-5506-4281-bd03-5599b6b696ce/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:03:28,879 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:28,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:28,880 INFO L85 PathProgramCache]: Analyzing trace with hash 809665562, now seen corresponding path program 1 times [2024-11-23 23:03:28,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:28,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587986647] [2024-11-23 23:03:28,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:28,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat