./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.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_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/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_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/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_d8af4988-46d5-4a3b-8c75-197b949232f5/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 6426d30449276f41292d944281f990de88775c0c256461a4ce5af87d5d4d093f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:53:30,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:53:30,768 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:53:30,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:53:30,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:53:30,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:53:30,838 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:53:30,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:53:30,838 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:53:30,839 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:53:30,839 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:53:30,839 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:53:30,840 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:53:30,840 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:53:30,841 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:53:30,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:53:30,842 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:53:30,842 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:53:30,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:53:30,842 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:53:30,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:53:30,842 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:53:30,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:53:30,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:53:30,842 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:53:30,843 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:53:30,843 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:53:30,843 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:53:30,843 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:53:30,843 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:53:30,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:53:30,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:53:30,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:53:30,845 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:53:30,845 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:53:30,845 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:53:30,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:53:30,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:53:30,845 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:53:30,845 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:53:30,846 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:53:30,846 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:53:30,846 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:53:30,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:53:30,846 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:53:30,847 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:53:30,847 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:53:30,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:53:30,847 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_d8af4988-46d5-4a3b-8c75-197b949232f5/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 -> 6426d30449276f41292d944281f990de88775c0c256461a4ce5af87d5d4d093f [2024-11-24 00:53:31,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:53:31,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:53:31,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:53:31,256 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:53:31,258 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:53:31,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i [2024-11-24 00:53:34,797 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/data/2b96fe7ac/e58f2d007fe3422a903f0e87324750f9/FLAGabf7a3758 [2024-11-24 00:53:35,093 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:53:35,093 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i [2024-11-24 00:53:35,103 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/data/2b96fe7ac/e58f2d007fe3422a903f0e87324750f9/FLAGabf7a3758 [2024-11-24 00:53:35,376 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/data/2b96fe7ac/e58f2d007fe3422a903f0e87324750f9 [2024-11-24 00:53:35,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:53:35,383 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:53:35,387 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:53:35,387 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:53:35,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:53:35,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:53:35" (1/1) ... [2024-11-24 00:53:35,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75097148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:35, skipping insertion in model container [2024-11-24 00:53:35,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:53:35" (1/1) ... [2024-11-24 00:53:35,422 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:53:35,644 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_d8af4988-46d5-4a3b-8c75-197b949232f5/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i[916,929] [2024-11-24 00:53:35,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:53:35,763 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:53:35,778 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_d8af4988-46d5-4a3b-8c75-197b949232f5/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-12.i[916,929] [2024-11-24 00:53:35,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:53:35,854 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:53:35,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:35 WrapperNode [2024-11-24 00:53:35,855 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:53:35,856 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:53:35,857 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:53:35,857 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:53:35,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:35" (1/1) ... [2024-11-24 00:53:35,880 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:35" (1/1) ... [2024-11-24 00:53:35,956 INFO L138 Inliner]: procedures = 26, calls = 153, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 446 [2024-11-24 00:53:35,957 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:53:35,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:53:35,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:53:35,961 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:53:35,973 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:35" (1/1) ... [2024-11-24 00:53:35,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:35" (1/1) ... [2024-11-24 00:53:35,987 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:35" (1/1) ... [2024-11-24 00:53:36,034 INFO L175 MemorySlicer]: Split 123 memory accesses to 4 slices as follows [2, 38, 12, 71]. 58 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 2, 4]. The 14 writes are split as follows [0, 8, 2, 4]. [2024-11-24 00:53:36,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:35" (1/1) ... [2024-11-24 00:53:36,035 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:35" (1/1) ... [2024-11-24 00:53:36,065 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:35" (1/1) ... [2024-11-24 00:53:36,067 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:35" (1/1) ... [2024-11-24 00:53:36,077 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:35" (1/1) ... [2024-11-24 00:53:36,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:35" (1/1) ... [2024-11-24 00:53:36,082 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:35" (1/1) ... [2024-11-24 00:53:36,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:53:36,088 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:53:36,088 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:53:36,089 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:53:36,090 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:35" (1/1) ... [2024-11-24 00:53:36,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:53:36,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:36,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:53:36,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:53:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:53:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:53:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:53:36,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 00:53:36,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 00:53:36,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:53:36,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:53:36,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 00:53:36,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 00:53:36,177 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:53:36,177 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:53:36,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:53:36,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:53:36,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:53:36,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:53:36,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:53:36,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:53:36,362 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:53:36,366 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:53:37,097 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2024-11-24 00:53:37,097 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:53:37,137 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:53:37,138 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:53:37,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:53:37 BoogieIcfgContainer [2024-11-24 00:53:37,139 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:53:37,141 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:53:37,141 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:53:37,148 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:53:37,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:53:35" (1/3) ... [2024-11-24 00:53:37,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df4e6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:53:37, skipping insertion in model container [2024-11-24 00:53:37,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:53:35" (2/3) ... [2024-11-24 00:53:37,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df4e6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:53:37, skipping insertion in model container [2024-11-24 00:53:37,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:53:37" (3/3) ... [2024-11-24 00:53:37,151 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-12.i [2024-11-24 00:53:37,171 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:53:37,175 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-a_file-12.i that has 2 procedures, 98 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:53:37,271 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:53:37,293 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;@7ad4cbb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:53:37,294 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:53:37,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-24 00:53:37,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-24 00:53:37,322 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:37,323 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:37,324 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:37,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:37,331 INFO L85 PathProgramCache]: Analyzing trace with hash -571948604, now seen corresponding path program 1 times [2024-11-24 00:53:37,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:37,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001651990] [2024-11-24 00:53:37,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:37,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-24 00:53:37,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:37,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001651990] [2024-11-24 00:53:37,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001651990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:37,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521764176] [2024-11-24 00:53:37,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:37,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:37,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:37,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:37,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:53:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:38,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:53:38,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-24 00:53:38,073 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:53:38,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521764176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:38,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:53:38,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:53:38,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904354390] [2024-11-24 00:53:38,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:38,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:53:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:38,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:53:38,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:53:38,110 INFO L87 Difference]: Start difference. First operand has 98 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 80 states have internal predecessors, (110), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:53:38,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:38,144 INFO L93 Difference]: Finished difference Result 183 states and 284 transitions. [2024-11-24 00:53:38,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:53:38,146 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 117 [2024-11-24 00:53:38,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:38,156 INFO L225 Difference]: With dead ends: 183 [2024-11-24 00:53:38,157 INFO L226 Difference]: Without dead ends: 88 [2024-11-24 00:53:38,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:53:38,167 INFO L435 NwaCegarLoop]: 123 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, 123 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 [2024-11-24 00:53:38,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:53:38,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-24 00:53:38,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-24 00:53:38,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-24 00:53:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 123 transitions. [2024-11-24 00:53:38,233 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 123 transitions. Word has length 117 [2024-11-24 00:53:38,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:38,234 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 123 transitions. [2024-11-24 00:53:38,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:53:38,234 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 123 transitions. [2024-11-24 00:53:38,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-24 00:53:38,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:38,237 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:38,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:53:38,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 00:53:38,438 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:38,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:38,440 INFO L85 PathProgramCache]: Analyzing trace with hash 760381860, now seen corresponding path program 1 times [2024-11-24 00:53:38,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:38,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054447663] [2024-11-24 00:53:38,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:38,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-24 00:53:39,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:39,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054447663] [2024-11-24 00:53:39,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054447663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:39,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165033770] [2024-11-24 00:53:39,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:39,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:39,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:39,250 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:39,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:53:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:39,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:53:39,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:53:39,574 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:53:39,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165033770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:39,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:53:39,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-24 00:53:39,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345972802] [2024-11-24 00:53:39,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:39,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:53:39,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:39,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:53:39,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:53:39,577 INFO L87 Difference]: Start difference. First operand 88 states and 123 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:53:39,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:39,622 INFO L93 Difference]: Finished difference Result 173 states and 243 transitions. [2024-11-24 00:53:39,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:53:39,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 117 [2024-11-24 00:53:39,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:39,624 INFO L225 Difference]: With dead ends: 173 [2024-11-24 00:53:39,624 INFO L226 Difference]: Without dead ends: 88 [2024-11-24 00:53:39,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:53:39,626 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:39,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:53:39,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-24 00:53:39,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-24 00:53:39,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 70 states have internal predecessors, (90), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-24 00:53:39,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 122 transitions. [2024-11-24 00:53:39,639 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 122 transitions. Word has length 117 [2024-11-24 00:53:39,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:39,641 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 122 transitions. [2024-11-24 00:53:39,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:53:39,641 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 122 transitions. [2024-11-24 00:53:39,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-24 00:53:39,643 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:39,643 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:39,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:53:39,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:39,848 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:39,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:39,849 INFO L85 PathProgramCache]: Analyzing trace with hash -124307358, now seen corresponding path program 1 times [2024-11-24 00:53:39,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:39,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490931698] [2024-11-24 00:53:39,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:39,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-24 00:53:40,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:40,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490931698] [2024-11-24 00:53:40,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490931698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:40,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429868478] [2024-11-24 00:53:40,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:40,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:40,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:40,245 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:40,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:53:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:40,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:53:40,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:53:40,543 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:53:40,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429868478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:40,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:53:40,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-24 00:53:40,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142293958] [2024-11-24 00:53:40,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:40,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:53:40,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:40,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:53:40,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:53:40,545 INFO L87 Difference]: Start difference. First operand 88 states and 122 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:53:40,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:40,639 INFO L93 Difference]: Finished difference Result 176 states and 245 transitions. [2024-11-24 00:53:40,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:53:40,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 119 [2024-11-24 00:53:40,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:40,642 INFO L225 Difference]: With dead ends: 176 [2024-11-24 00:53:40,642 INFO L226 Difference]: Without dead ends: 91 [2024-11-24 00:53:40,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:53:40,648 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:40,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 461 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:53:40,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-24 00:53:40,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-24 00:53:40,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.273972602739726) internal successors, (93), 73 states have internal predecessors, (93), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-24 00:53:40,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2024-11-24 00:53:40,671 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 119 [2024-11-24 00:53:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:40,674 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2024-11-24 00:53:40,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:53:40,675 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2024-11-24 00:53:40,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-24 00:53:40,677 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:40,677 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:40,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:53:40,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:40,881 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:40,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:40,882 INFO L85 PathProgramCache]: Analyzing trace with hash -233055546, now seen corresponding path program 1 times [2024-11-24 00:53:40,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:40,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192562531] [2024-11-24 00:53:40,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:40,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:53:43,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:43,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192562531] [2024-11-24 00:53:43,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192562531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:43,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:43,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:53:43,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222649906] [2024-11-24 00:53:43,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:43,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:53:43,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:43,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:53:43,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:53:43,218 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:53:43,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:43,614 INFO L93 Difference]: Finished difference Result 133 states and 177 transitions. [2024-11-24 00:53:43,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:53:43,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 121 [2024-11-24 00:53:43,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:43,617 INFO L225 Difference]: With dead ends: 133 [2024-11-24 00:53:43,617 INFO L226 Difference]: Without dead ends: 131 [2024-11-24 00:53:43,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:53:43,618 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 36 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:43,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 767 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:53:43,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-24 00:53:43,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2024-11-24 00:53:43,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 98 states have (on average 1.2755102040816326) internal successors, (125), 98 states have internal predecessors, (125), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-24 00:53:43,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 157 transitions. [2024-11-24 00:53:43,635 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 157 transitions. Word has length 121 [2024-11-24 00:53:43,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:43,636 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 157 transitions. [2024-11-24 00:53:43,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:53:43,641 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 157 transitions. [2024-11-24 00:53:43,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-24 00:53:43,643 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:43,643 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:43,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:53:43,648 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:43,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:43,648 INFO L85 PathProgramCache]: Analyzing trace with hash 44675301, now seen corresponding path program 1 times [2024-11-24 00:53:43,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:43,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895970297] [2024-11-24 00:53:43,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:43,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-24 00:53:46,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:46,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895970297] [2024-11-24 00:53:46,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895970297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:46,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295183204] [2024-11-24 00:53:46,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:46,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:46,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:46,775 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:46,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:53:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:47,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-24 00:53:47,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:47,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-24 00:53:47,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-24 00:53:48,100 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:53:48,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2024-11-24 00:53:49,036 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:53:49,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 38 [2024-11-24 00:53:49,533 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:53:49,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 40 [2024-11-24 00:53:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 144 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-24 00:53:49,719 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:53:51,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-24 00:53:51,835 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 156 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-24 00:53:51,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295183204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:53:51,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:53:51,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 25] total 50 [2024-11-24 00:53:51,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564945953] [2024-11-24 00:53:51,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:53:51,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-24 00:53:51,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:51,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-24 00:53:51,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=2043, Unknown=0, NotChecked=0, Total=2450 [2024-11-24 00:53:51,841 INFO L87 Difference]: Start difference. First operand 116 states and 157 transitions. Second operand has 50 states, 40 states have (on average 3.5) internal successors, (140), 45 states have internal predecessors, (140), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) [2024-11-24 00:53:54,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:54,331 INFO L93 Difference]: Finished difference Result 191 states and 241 transitions. [2024-11-24 00:53:54,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-24 00:53:54,332 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 40 states have (on average 3.5) internal successors, (140), 45 states have internal predecessors, (140), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) Word has length 122 [2024-11-24 00:53:54,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:54,335 INFO L225 Difference]: With dead ends: 191 [2024-11-24 00:53:54,335 INFO L226 Difference]: Without dead ends: 189 [2024-11-24 00:53:54,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 214 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=818, Invalid=3472, Unknown=0, NotChecked=0, Total=4290 [2024-11-24 00:53:54,341 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 644 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:54,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 2093 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-24 00:53:54,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-24 00:53:54,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 132. [2024-11-24 00:53:54,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 110 states have (on average 1.2454545454545454) internal successors, (137), 110 states have internal predecessors, (137), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-24 00:53:54,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 169 transitions. [2024-11-24 00:53:54,375 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 169 transitions. Word has length 122 [2024-11-24 00:53:54,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:54,376 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 169 transitions. [2024-11-24 00:53:54,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 40 states have (on average 3.5) internal successors, (140), 45 states have internal predecessors, (140), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) [2024-11-24 00:53:54,377 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 169 transitions. [2024-11-24 00:53:54,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-24 00:53:54,383 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:54,383 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:54,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:53:54,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:54,584 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:54,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:54,585 INFO L85 PathProgramCache]: Analyzing trace with hash 972179707, now seen corresponding path program 1 times [2024-11-24 00:53:54,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:54,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916618060] [2024-11-24 00:53:54,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:54,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-24 00:53:57,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:57,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916618060] [2024-11-24 00:53:57,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916618060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:57,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116462540] [2024-11-24 00:53:57,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:57,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:57,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:57,270 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:57,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:53:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:57,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-24 00:53:57,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:57,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-24 00:53:58,501 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:53:58,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2024-11-24 00:53:59,293 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:53:59,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 38 [2024-11-24 00:53:59,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:53:59,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 36 [2024-11-24 00:53:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 144 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-24 00:53:59,880 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:54:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 156 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-24 00:54:01,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116462540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:54:01,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:54:01,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26, 26] total 52 [2024-11-24 00:54:01,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133663918] [2024-11-24 00:54:01,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:54:01,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-24 00:54:01,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:01,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-24 00:54:01,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=2244, Unknown=0, NotChecked=0, Total=2652 [2024-11-24 00:54:01,621 INFO L87 Difference]: Start difference. First operand 132 states and 169 transitions. Second operand has 52 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 47 states have internal predecessors, (143), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) [2024-11-24 00:54:04,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:04,489 INFO L93 Difference]: Finished difference Result 213 states and 264 transitions. [2024-11-24 00:54:04,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-24 00:54:04,490 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 47 states have internal predecessors, (143), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) Word has length 123 [2024-11-24 00:54:04,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:04,492 INFO L225 Difference]: With dead ends: 213 [2024-11-24 00:54:04,492 INFO L226 Difference]: Without dead ends: 211 [2024-11-24 00:54:04,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 216 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1027, Invalid=5135, Unknown=0, NotChecked=0, Total=6162 [2024-11-24 00:54:04,497 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 534 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:04,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 1776 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 00:54:04,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-24 00:54:04,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 134. [2024-11-24 00:54:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 112 states have (on average 1.25) internal successors, (140), 112 states have internal predecessors, (140), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-24 00:54:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 172 transitions. [2024-11-24 00:54:04,516 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 172 transitions. Word has length 123 [2024-11-24 00:54:04,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:04,516 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 172 transitions. [2024-11-24 00:54:04,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 47 states have internal predecessors, (143), 13 states have call successors, (47), 5 states have call predecessors, (47), 10 states have return successors, (47), 8 states have call predecessors, (47), 13 states have call successors, (47) [2024-11-24 00:54:04,517 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 172 transitions. [2024-11-24 00:54:04,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-24 00:54:04,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:04,519 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:04,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:54:04,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:04,724 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:04,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:04,724 INFO L85 PathProgramCache]: Analyzing trace with hash -959553979, now seen corresponding path program 1 times [2024-11-24 00:54:04,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:04,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052905515] [2024-11-24 00:54:04,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:04,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:04,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:04,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052905515] [2024-11-24 00:54:04,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052905515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:04,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:04,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:54:04,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597592104] [2024-11-24 00:54:04,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:04,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:54:04,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:04,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:54:04,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:54:04,909 INFO L87 Difference]: Start difference. First operand 134 states and 172 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:54:05,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:05,036 INFO L93 Difference]: Finished difference Result 347 states and 436 transitions. [2024-11-24 00:54:05,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:54:05,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 124 [2024-11-24 00:54:05,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:05,039 INFO L225 Difference]: With dead ends: 347 [2024-11-24 00:54:05,039 INFO L226 Difference]: Without dead ends: 216 [2024-11-24 00:54:05,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:54:05,045 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 54 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:05,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 510 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:54:05,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-24 00:54:05,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2024-11-24 00:54:05,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 180 states have (on average 1.2166666666666666) internal successors, (219), 181 states have internal predecessors, (219), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-24 00:54:05,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 263 transitions. [2024-11-24 00:54:05,084 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 263 transitions. Word has length 124 [2024-11-24 00:54:05,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:05,089 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 263 transitions. [2024-11-24 00:54:05,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:54:05,089 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 263 transitions. [2024-11-24 00:54:05,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-24 00:54:05,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:05,091 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:05,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:54:05,091 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:05,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:05,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1108535968, now seen corresponding path program 1 times [2024-11-24 00:54:05,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:05,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324389724] [2024-11-24 00:54:05,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:05,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:05,518 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-24 00:54:05,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:05,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324389724] [2024-11-24 00:54:05,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324389724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:05,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000570053] [2024-11-24 00:54:05,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:05,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:05,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:05,521 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:05,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:54:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:05,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 00:54:05,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:06,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2024-11-24 00:54:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-24 00:54:06,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:54:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-24 00:54:06,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000570053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:54:06,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:54:06,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-24 00:54:06,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106970388] [2024-11-24 00:54:06,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:54:06,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:54:06,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:06,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:54:06,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:54:06,325 INFO L87 Difference]: Start difference. First operand 213 states and 263 transitions. Second operand has 11 states, 8 states have (on average 7.25) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-24 00:54:06,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:06,849 INFO L93 Difference]: Finished difference Result 433 states and 532 transitions. [2024-11-24 00:54:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:54:06,850 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 7.25) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) Word has length 124 [2024-11-24 00:54:06,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:06,855 INFO L225 Difference]: With dead ends: 433 [2024-11-24 00:54:06,856 INFO L226 Difference]: Without dead ends: 223 [2024-11-24 00:54:06,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:54:06,858 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 194 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:06,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 454 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:54:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-24 00:54:06,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 159. [2024-11-24 00:54:06,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 136 states have (on average 1.2205882352941178) internal successors, (166), 136 states have internal predecessors, (166), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-24 00:54:06,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 198 transitions. [2024-11-24 00:54:06,887 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 198 transitions. Word has length 124 [2024-11-24 00:54:06,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:06,887 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 198 transitions. [2024-11-24 00:54:06,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 7.25) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-24 00:54:06,888 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 198 transitions. [2024-11-24 00:54:06,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-24 00:54:06,889 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:06,889 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:06,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:54:07,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:07,094 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:07,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:07,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1994128982, now seen corresponding path program 1 times [2024-11-24 00:54:07,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:07,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903505461] [2024-11-24 00:54:07,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:07,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-24 00:54:07,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:07,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903505461] [2024-11-24 00:54:07,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903505461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:07,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424403745] [2024-11-24 00:54:07,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:07,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:07,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:07,683 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:07,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:54:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:07,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 00:54:07,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:08,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:54:08,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2024-11-24 00:54:08,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:54:08,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 26 [2024-11-24 00:54:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 225 proven. 30 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-24 00:54:08,324 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:54:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-24 00:54:08,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424403745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:54:08,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:54:08,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 12 [2024-11-24 00:54:08,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839017047] [2024-11-24 00:54:08,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:54:08,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:54:08,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:08,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:54:08,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:54:08,683 INFO L87 Difference]: Start difference. First operand 159 states and 198 transitions. Second operand has 12 states, 9 states have (on average 8.0) internal successors, (72), 12 states have internal predecessors, (72), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-24 00:54:09,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:09,150 INFO L93 Difference]: Finished difference Result 367 states and 455 transitions. [2024-11-24 00:54:09,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:54:09,155 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 8.0) internal successors, (72), 12 states have internal predecessors, (72), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) Word has length 125 [2024-11-24 00:54:09,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:09,157 INFO L225 Difference]: With dead ends: 367 [2024-11-24 00:54:09,157 INFO L226 Difference]: Without dead ends: 211 [2024-11-24 00:54:09,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2024-11-24 00:54:09,161 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 115 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:09,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 461 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:54:09,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-24 00:54:09,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 159. [2024-11-24 00:54:09,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 136 states have (on average 1.213235294117647) internal successors, (165), 136 states have internal predecessors, (165), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-24 00:54:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 197 transitions. [2024-11-24 00:54:09,192 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 197 transitions. Word has length 125 [2024-11-24 00:54:09,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:09,193 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 197 transitions. [2024-11-24 00:54:09,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 8.0) internal successors, (72), 12 states have internal predecessors, (72), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-24 00:54:09,193 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 197 transitions. [2024-11-24 00:54:09,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-24 00:54:09,195 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:09,195 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:09,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:54:09,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:09,401 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:09,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:09,402 INFO L85 PathProgramCache]: Analyzing trace with hash 220271354, now seen corresponding path program 1 times [2024-11-24 00:54:09,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:09,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896548519] [2024-11-24 00:54:09,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:09,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 00:54:09,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841284195] [2024-11-24 00:54:09,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:09,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:09,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:09,533 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:09,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:54:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:09,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-24 00:54:09,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:10,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-24 00:54:10,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-24 00:54:10,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-24 00:54:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:10,314 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:54:10,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:10,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896548519] [2024-11-24 00:54:10,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 00:54:10,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841284195] [2024-11-24 00:54:10,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841284195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:10,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:10,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:54:10,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352080654] [2024-11-24 00:54:10,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:10,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:54:10,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:10,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:54:10,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:54:10,319 INFO L87 Difference]: Start difference. First operand 159 states and 197 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:54:10,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:10,498 INFO L93 Difference]: Finished difference Result 417 states and 513 transitions. [2024-11-24 00:54:10,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:54:10,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 126 [2024-11-24 00:54:10,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:10,503 INFO L225 Difference]: With dead ends: 417 [2024-11-24 00:54:10,503 INFO L226 Difference]: Without dead ends: 261 [2024-11-24 00:54:10,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:54:10,504 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 48 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:10,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 279 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:54:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-24 00:54:10,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 249. [2024-11-24 00:54:10,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 204 states have (on average 1.1715686274509804) internal successors, (239), 204 states have internal predecessors, (239), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-24 00:54:10,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 303 transitions. [2024-11-24 00:54:10,551 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 303 transitions. Word has length 126 [2024-11-24 00:54:10,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:10,552 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 303 transitions. [2024-11-24 00:54:10,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:54:10,553 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 303 transitions. [2024-11-24 00:54:10,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-24 00:54:10,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:10,554 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:10,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:54:10,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 00:54:10,759 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:10,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:10,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2052560144, now seen corresponding path program 1 times [2024-11-24 00:54:10,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:10,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585286086] [2024-11-24 00:54:10,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:10,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 00:54:10,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387898218] [2024-11-24 00:54:10,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:10,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:10,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:10,847 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:10,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:54:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:11,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 00:54:11,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:11,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-24 00:54:11,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-24 00:54:11,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-24 00:54:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:11,451 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:54:11,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:11,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585286086] [2024-11-24 00:54:11,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 00:54:11,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387898218] [2024-11-24 00:54:11,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387898218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:11,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:11,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:54:11,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323629894] [2024-11-24 00:54:11,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:11,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:54:11,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:11,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:54:11,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:54:11,455 INFO L87 Difference]: Start difference. First operand 249 states and 303 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:54:11,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:11,638 INFO L93 Difference]: Finished difference Result 493 states and 603 transitions. [2024-11-24 00:54:11,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:54:11,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 127 [2024-11-24 00:54:11,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:11,644 INFO L225 Difference]: With dead ends: 493 [2024-11-24 00:54:11,644 INFO L226 Difference]: Without dead ends: 247 [2024-11-24 00:54:11,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:54:11,646 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 22 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:11,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 277 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:54:11,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-24 00:54:11,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 240. [2024-11-24 00:54:11,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 195 states have (on average 1.1641025641025642) internal successors, (227), 195 states have internal predecessors, (227), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-24 00:54:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 291 transitions. [2024-11-24 00:54:11,700 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 291 transitions. Word has length 127 [2024-11-24 00:54:11,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:11,700 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 291 transitions. [2024-11-24 00:54:11,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:54:11,701 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 291 transitions. [2024-11-24 00:54:11,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:11,702 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:11,702 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:11,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 00:54:11,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:11,907 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:11,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:11,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1660078417, now seen corresponding path program 1 times [2024-11-24 00:54:11,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:11,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330105972] [2024-11-24 00:54:11,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:11,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:12,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:12,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330105972] [2024-11-24 00:54:12,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330105972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:12,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:12,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:54:12,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2893789] [2024-11-24 00:54:12,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:12,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:54:12,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:12,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:54:12,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:54:12,667 INFO L87 Difference]: Start difference. First operand 240 states and 291 transitions. Second operand has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:12,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:12,913 INFO L93 Difference]: Finished difference Result 398 states and 489 transitions. [2024-11-24 00:54:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:54:12,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-24 00:54:12,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:12,916 INFO L225 Difference]: With dead ends: 398 [2024-11-24 00:54:12,916 INFO L226 Difference]: Without dead ends: 242 [2024-11-24 00:54:12,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:54:12,919 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 0 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:12,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 552 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:54:12,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-24 00:54:12,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2024-11-24 00:54:12,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 197 states have (on average 1.16751269035533) internal successors, (230), 197 states have internal predecessors, (230), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-24 00:54:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 294 transitions. [2024-11-24 00:54:12,966 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 294 transitions. Word has length 129 [2024-11-24 00:54:12,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:12,970 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 294 transitions. [2024-11-24 00:54:12,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.4) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:12,970 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 294 transitions. [2024-11-24 00:54:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:12,972 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:12,972 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:12,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:54:12,976 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:12,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:12,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1794091923, now seen corresponding path program 1 times [2024-11-24 00:54:12,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:12,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057773877] [2024-11-24 00:54:12,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:12,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:14,288 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:14,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:14,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057773877] [2024-11-24 00:54:14,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057773877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:14,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:14,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:54:14,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668639684] [2024-11-24 00:54:14,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:14,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:54:14,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:14,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:54:14,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:54:14,292 INFO L87 Difference]: Start difference. First operand 242 states and 294 transitions. Second operand has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:15,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:15,278 INFO L93 Difference]: Finished difference Result 518 states and 635 transitions. [2024-11-24 00:54:15,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:54:15,279 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-24 00:54:15,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:15,282 INFO L225 Difference]: With dead ends: 518 [2024-11-24 00:54:15,282 INFO L226 Difference]: Without dead ends: 360 [2024-11-24 00:54:15,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:54:15,284 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 77 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:15,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1055 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 00:54:15,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-24 00:54:15,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 357. [2024-11-24 00:54:15,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 296 states have (on average 1.1824324324324325) internal successors, (350), 297 states have internal predecessors, (350), 42 states have call successors, (42), 18 states have call predecessors, (42), 18 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-24 00:54:15,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 434 transitions. [2024-11-24 00:54:15,367 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 434 transitions. Word has length 129 [2024-11-24 00:54:15,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:15,368 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 434 transitions. [2024-11-24 00:54:15,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:15,368 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 434 transitions. [2024-11-24 00:54:15,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:15,370 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:15,371 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:15,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:54:15,371 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:15,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:15,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1945556348, now seen corresponding path program 1 times [2024-11-24 00:54:15,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:15,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519103569] [2024-11-24 00:54:15,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:15,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:16,454 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:16,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:16,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519103569] [2024-11-24 00:54:16,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519103569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:16,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:16,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:54:16,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301238238] [2024-11-24 00:54:16,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:16,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:54:16,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:16,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:54:16,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:54:16,460 INFO L87 Difference]: Start difference. First operand 357 states and 434 transitions. Second operand has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:17,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:17,172 INFO L93 Difference]: Finished difference Result 791 states and 961 transitions. [2024-11-24 00:54:17,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:54:17,173 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-24 00:54:17,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:17,178 INFO L225 Difference]: With dead ends: 791 [2024-11-24 00:54:17,178 INFO L226 Difference]: Without dead ends: 518 [2024-11-24 00:54:17,179 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:54:17,183 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 81 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:17,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 623 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:54:17,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-24 00:54:17,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 402. [2024-11-24 00:54:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 325 states have (on average 1.1630769230769231) internal successors, (378), 327 states have internal predecessors, (378), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 00:54:17,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 482 transitions. [2024-11-24 00:54:17,249 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 482 transitions. Word has length 129 [2024-11-24 00:54:17,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:17,249 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 482 transitions. [2024-11-24 00:54:17,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 482 transitions. [2024-11-24 00:54:17,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:17,252 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:17,252 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:17,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:54:17,253 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:17,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:17,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1535926485, now seen corresponding path program 1 times [2024-11-24 00:54:17,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:17,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970314087] [2024-11-24 00:54:17,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:17,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:18,053 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:18,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:18,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970314087] [2024-11-24 00:54:18,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970314087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:18,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:18,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:54:18,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781877391] [2024-11-24 00:54:18,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:18,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:54:18,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:18,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:54:18,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:54:18,056 INFO L87 Difference]: Start difference. First operand 402 states and 482 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:54:18,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:18,567 INFO L93 Difference]: Finished difference Result 825 states and 995 transitions. [2024-11-24 00:54:18,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:54:18,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2024-11-24 00:54:18,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:18,572 INFO L225 Difference]: With dead ends: 825 [2024-11-24 00:54:18,572 INFO L226 Difference]: Without dead ends: 552 [2024-11-24 00:54:18,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:54:18,576 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 65 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:18,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 563 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:54:18,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-11-24 00:54:18,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 402. [2024-11-24 00:54:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 325 states have (on average 1.156923076923077) internal successors, (376), 327 states have internal predecessors, (376), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 00:54:18,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 480 transitions. [2024-11-24 00:54:18,658 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 480 transitions. Word has length 129 [2024-11-24 00:54:18,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:18,660 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 480 transitions. [2024-11-24 00:54:18,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:54:18,661 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 480 transitions. [2024-11-24 00:54:18,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:18,664 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:18,664 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:18,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:54:18,665 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:18,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:18,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1928953495, now seen corresponding path program 1 times [2024-11-24 00:54:18,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:18,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320119727] [2024-11-24 00:54:18,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:18,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:19,778 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:19,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:19,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320119727] [2024-11-24 00:54:19,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320119727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:19,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:19,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:54:19,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326179816] [2024-11-24 00:54:19,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:19,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:54:19,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:19,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:54:19,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:54:19,780 INFO L87 Difference]: Start difference. First operand 402 states and 480 transitions. Second operand has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:20,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:20,650 INFO L93 Difference]: Finished difference Result 786 states and 945 transitions. [2024-11-24 00:54:20,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:54:20,650 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-24 00:54:20,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:20,654 INFO L225 Difference]: With dead ends: 786 [2024-11-24 00:54:20,654 INFO L226 Difference]: Without dead ends: 513 [2024-11-24 00:54:20,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:54:20,656 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 72 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:20,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1061 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:54:20,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-24 00:54:20,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 428. [2024-11-24 00:54:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 351 states have (on average 1.1595441595441596) internal successors, (407), 353 states have internal predecessors, (407), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 00:54:20,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 511 transitions. [2024-11-24 00:54:20,737 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 511 transitions. Word has length 129 [2024-11-24 00:54:20,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:20,738 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 511 transitions. [2024-11-24 00:54:20,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:20,738 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 511 transitions. [2024-11-24 00:54:20,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:20,740 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:20,740 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:20,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 00:54:20,740 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:20,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:20,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1687390910, now seen corresponding path program 1 times [2024-11-24 00:54:20,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:20,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57042585] [2024-11-24 00:54:20,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:20,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:21,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:21,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57042585] [2024-11-24 00:54:21,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57042585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:21,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:21,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:54:21,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873082136] [2024-11-24 00:54:21,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:21,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:54:21,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:21,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:54:21,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:54:21,474 INFO L87 Difference]: Start difference. First operand 428 states and 511 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:54:22,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:22,020 INFO L93 Difference]: Finished difference Result 795 states and 953 transitions. [2024-11-24 00:54:22,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:54:22,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2024-11-24 00:54:22,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:22,026 INFO L225 Difference]: With dead ends: 795 [2024-11-24 00:54:22,027 INFO L226 Difference]: Without dead ends: 496 [2024-11-24 00:54:22,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:54:22,029 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 64 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:22,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 565 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:54:22,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2024-11-24 00:54:22,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 428. [2024-11-24 00:54:22,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 351 states have (on average 1.1538461538461537) internal successors, (405), 353 states have internal predecessors, (405), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 00:54:22,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 509 transitions. [2024-11-24 00:54:22,103 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 509 transitions. Word has length 129 [2024-11-24 00:54:22,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:22,104 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 509 transitions. [2024-11-24 00:54:22,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:54:22,105 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 509 transitions. [2024-11-24 00:54:22,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:22,107 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:22,108 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:22,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 00:54:22,108 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:22,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:22,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2080417920, now seen corresponding path program 1 times [2024-11-24 00:54:22,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:22,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55002294] [2024-11-24 00:54:22,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:22,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:23,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:23,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55002294] [2024-11-24 00:54:23,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55002294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:23,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:23,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 00:54:23,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109133114] [2024-11-24 00:54:23,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:23,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 00:54:23,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:23,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 00:54:23,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:54:23,898 INFO L87 Difference]: Start difference. First operand 428 states and 509 transitions. Second operand has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:25,208 INFO L93 Difference]: Finished difference Result 949 states and 1136 transitions. [2024-11-24 00:54:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 00:54:25,209 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-24 00:54:25,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:25,213 INFO L225 Difference]: With dead ends: 949 [2024-11-24 00:54:25,213 INFO L226 Difference]: Without dead ends: 650 [2024-11-24 00:54:25,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2024-11-24 00:54:25,215 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 84 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:25,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1821 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 00:54:25,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2024-11-24 00:54:25,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 467. [2024-11-24 00:54:25,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 390 states have (on average 1.176923076923077) internal successors, (459), 392 states have internal predecessors, (459), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 00:54:25,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 563 transitions. [2024-11-24 00:54:25,292 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 563 transitions. Word has length 129 [2024-11-24 00:54:25,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:25,293 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 563 transitions. [2024-11-24 00:54:25,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:25,294 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 563 transitions. [2024-11-24 00:54:25,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:25,296 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:25,296 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:25,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 00:54:25,297 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:25,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:25,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1300069932, now seen corresponding path program 1 times [2024-11-24 00:54:25,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:25,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801367452] [2024-11-24 00:54:25,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:25,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:25,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:25,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801367452] [2024-11-24 00:54:25,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801367452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:25,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:25,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:54:25,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603461446] [2024-11-24 00:54:25,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:25,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:54:25,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:25,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:54:25,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:54:25,894 INFO L87 Difference]: Start difference. First operand 467 states and 563 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:54:26,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:26,318 INFO L93 Difference]: Finished difference Result 903 states and 1091 transitions. [2024-11-24 00:54:26,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:54:26,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2024-11-24 00:54:26,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:26,324 INFO L225 Difference]: With dead ends: 903 [2024-11-24 00:54:26,324 INFO L226 Difference]: Without dead ends: 565 [2024-11-24 00:54:26,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:54:26,326 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 89 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:26,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 488 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:54:26,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-24 00:54:26,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 467. [2024-11-24 00:54:26,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 390 states have (on average 1.1743589743589744) internal successors, (458), 392 states have internal predecessors, (458), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 00:54:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 562 transitions. [2024-11-24 00:54:26,400 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 562 transitions. Word has length 129 [2024-11-24 00:54:26,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:26,401 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 562 transitions. [2024-11-24 00:54:26,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:54:26,401 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 562 transitions. [2024-11-24 00:54:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:26,403 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:26,403 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:26,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 00:54:26,403 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:26,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:26,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1434083438, now seen corresponding path program 1 times [2024-11-24 00:54:26,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:26,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784759641] [2024-11-24 00:54:26,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:26,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:28,704 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:28,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:28,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784759641] [2024-11-24 00:54:28,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784759641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:28,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:28,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-24 00:54:28,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655898263] [2024-11-24 00:54:28,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:28,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 00:54:28,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:28,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 00:54:28,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:54:28,707 INFO L87 Difference]: Start difference. First operand 467 states and 562 transitions. Second operand has 18 states, 16 states have (on average 3.25) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:30,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:30,205 INFO L93 Difference]: Finished difference Result 1033 states and 1248 transitions. [2024-11-24 00:54:30,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 00:54:30,206 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.25) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-24 00:54:30,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:30,210 INFO L225 Difference]: With dead ends: 1033 [2024-11-24 00:54:30,210 INFO L226 Difference]: Without dead ends: 695 [2024-11-24 00:54:30,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:54:30,211 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 86 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:30,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 2155 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 00:54:30,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2024-11-24 00:54:30,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 504. [2024-11-24 00:54:30,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 427 states have (on average 1.1943793911007026) internal successors, (510), 429 states have internal predecessors, (510), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 00:54:30,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 614 transitions. [2024-11-24 00:54:30,278 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 614 transitions. Word has length 129 [2024-11-24 00:54:30,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:30,279 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 614 transitions. [2024-11-24 00:54:30,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.25) internal successors, (52), 18 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:30,279 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 614 transitions. [2024-11-24 00:54:30,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:30,281 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:30,281 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:30,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 00:54:30,282 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:30,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:30,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1585547863, now seen corresponding path program 1 times [2024-11-24 00:54:30,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:30,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765042469] [2024-11-24 00:54:30,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:30,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:31,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:31,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765042469] [2024-11-24 00:54:31,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765042469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:31,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:31,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:54:31,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523331432] [2024-11-24 00:54:31,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:31,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:54:31,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:31,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:54:31,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:54:31,328 INFO L87 Difference]: Start difference. First operand 504 states and 614 transitions. Second operand has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:32,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:32,098 INFO L93 Difference]: Finished difference Result 961 states and 1175 transitions. [2024-11-24 00:54:32,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:54:32,099 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-24 00:54:32,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:32,104 INFO L225 Difference]: With dead ends: 961 [2024-11-24 00:54:32,105 INFO L226 Difference]: Without dead ends: 586 [2024-11-24 00:54:32,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:54:32,107 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 72 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:32,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 913 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:54:32,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2024-11-24 00:54:32,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 506. [2024-11-24 00:54:32,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 429 states have (on average 1.1934731934731935) internal successors, (512), 431 states have internal predecessors, (512), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 00:54:32,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 616 transitions. [2024-11-24 00:54:32,186 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 616 transitions. Word has length 129 [2024-11-24 00:54:32,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:32,186 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 616 transitions. [2024-11-24 00:54:32,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:32,187 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 616 transitions. [2024-11-24 00:54:32,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:32,190 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:32,191 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:32,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 00:54:32,192 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:32,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:32,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1722118031, now seen corresponding path program 1 times [2024-11-24 00:54:32,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:32,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044434675] [2024-11-24 00:54:32,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:32,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:33,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:33,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044434675] [2024-11-24 00:54:33,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044434675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:33,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:33,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-24 00:54:33,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164135020] [2024-11-24 00:54:33,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:33,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:54:33,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:33,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:54:33,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:54:33,972 INFO L87 Difference]: Start difference. First operand 506 states and 616 transitions. Second operand has 13 states, 9 states have (on average 5.777777777777778) internal successors, (52), 13 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-24 00:54:35,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:35,414 INFO L93 Difference]: Finished difference Result 1091 states and 1330 transitions. [2024-11-24 00:54:35,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:54:35,415 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 5.777777777777778) internal successors, (52), 13 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) Word has length 129 [2024-11-24 00:54:35,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:35,419 INFO L225 Difference]: With dead ends: 1091 [2024-11-24 00:54:35,419 INFO L226 Difference]: Without dead ends: 714 [2024-11-24 00:54:35,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:54:35,423 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 173 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:35,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1164 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 00:54:35,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2024-11-24 00:54:35,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 710. [2024-11-24 00:54:35,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 599 states have (on average 1.1769616026711185) internal successors, (705), 603 states have internal predecessors, (705), 74 states have call successors, (74), 36 states have call predecessors, (74), 36 states have return successors, (74), 70 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-24 00:54:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 853 transitions. [2024-11-24 00:54:35,560 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 853 transitions. Word has length 129 [2024-11-24 00:54:35,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:35,560 INFO L471 AbstractCegarLoop]: Abstraction has 710 states and 853 transitions. [2024-11-24 00:54:35,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 5.777777777777778) internal successors, (52), 13 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-24 00:54:35,561 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 853 transitions. [2024-11-24 00:54:35,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:35,563 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:35,563 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:35,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 00:54:35,563 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:35,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:35,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1873582456, now seen corresponding path program 1 times [2024-11-24 00:54:35,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:35,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458360205] [2024-11-24 00:54:35,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:35,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:36,888 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:36,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:36,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458360205] [2024-11-24 00:54:36,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458360205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:36,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:36,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-24 00:54:36,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785721605] [2024-11-24 00:54:36,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:36,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 00:54:36,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:36,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 00:54:36,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:54:36,893 INFO L87 Difference]: Start difference. First operand 710 states and 853 transitions. Second operand has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:38,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:38,288 INFO L93 Difference]: Finished difference Result 1402 states and 1685 transitions. [2024-11-24 00:54:38,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 00:54:38,289 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-24 00:54:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:38,293 INFO L225 Difference]: With dead ends: 1402 [2024-11-24 00:54:38,294 INFO L226 Difference]: Without dead ends: 821 [2024-11-24 00:54:38,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2024-11-24 00:54:38,296 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 88 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:38,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 2073 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 00:54:38,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-24 00:54:38,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 800. [2024-11-24 00:54:38,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 670 states have (on average 1.1701492537313434) internal successors, (784), 675 states have internal predecessors, (784), 86 states have call successors, (86), 43 states have call predecessors, (86), 43 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-24 00:54:38,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 956 transitions. [2024-11-24 00:54:38,501 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 956 transitions. Word has length 129 [2024-11-24 00:54:38,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:38,502 INFO L471 AbstractCegarLoop]: Abstraction has 800 states and 956 transitions. [2024-11-24 00:54:38,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:38,503 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 956 transitions. [2024-11-24 00:54:38,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:38,504 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:38,505 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:38,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 00:54:38,505 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:38,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:38,506 INFO L85 PathProgramCache]: Analyzing trace with hash 2028357830, now seen corresponding path program 1 times [2024-11-24 00:54:38,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:38,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865531623] [2024-11-24 00:54:38,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:38,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:39,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:39,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865531623] [2024-11-24 00:54:39,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865531623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:39,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:39,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:54:39,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179497809] [2024-11-24 00:54:39,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:39,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:54:39,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:39,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:54:39,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:54:39,662 INFO L87 Difference]: Start difference. First operand 800 states and 956 transitions. Second operand has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:40,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:40,287 INFO L93 Difference]: Finished difference Result 1608 states and 1919 transitions. [2024-11-24 00:54:40,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:54:40,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-24 00:54:40,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:40,293 INFO L225 Difference]: With dead ends: 1608 [2024-11-24 00:54:40,293 INFO L226 Difference]: Without dead ends: 931 [2024-11-24 00:54:40,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:54:40,296 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 78 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:40,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 868 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:54:40,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2024-11-24 00:54:40,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 610. [2024-11-24 00:54:40,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 514 states have (on average 1.1556420233463034) internal successors, (594), 517 states have internal predecessors, (594), 64 states have call successors, (64), 31 states have call predecessors, (64), 31 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-24 00:54:40,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 722 transitions. [2024-11-24 00:54:40,433 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 722 transitions. Word has length 129 [2024-11-24 00:54:40,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:40,434 INFO L471 AbstractCegarLoop]: Abstraction has 610 states and 722 transitions. [2024-11-24 00:54:40,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.666666666666666) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:40,435 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 722 transitions. [2024-11-24 00:54:40,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:40,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:40,437 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:40,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 00:54:40,438 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:40,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:40,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1856979603, now seen corresponding path program 1 times [2024-11-24 00:54:40,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:40,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806900435] [2024-11-24 00:54:40,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:40,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:41,570 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:41,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:41,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806900435] [2024-11-24 00:54:41,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806900435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:41,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:41,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 00:54:41,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767929209] [2024-11-24 00:54:41,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:41,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:54:41,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:41,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:54:41,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:54:41,573 INFO L87 Difference]: Start difference. First operand 610 states and 722 transitions. Second operand has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:42,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:42,717 INFO L93 Difference]: Finished difference Result 1090 states and 1296 transitions. [2024-11-24 00:54:42,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:54:42,718 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2024-11-24 00:54:42,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:42,723 INFO L225 Difference]: With dead ends: 1090 [2024-11-24 00:54:42,723 INFO L226 Difference]: Without dead ends: 607 [2024-11-24 00:54:42,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:54:42,725 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 77 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:42,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1199 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-24 00:54:42,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-11-24 00:54:42,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 604. [2024-11-24 00:54:42,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 508 states have (on average 1.1496062992125984) internal successors, (584), 511 states have internal predecessors, (584), 64 states have call successors, (64), 31 states have call predecessors, (64), 31 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-24 00:54:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 712 transitions. [2024-11-24 00:54:42,882 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 712 transitions. Word has length 129 [2024-11-24 00:54:42,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:42,882 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 712 transitions. [2024-11-24 00:54:42,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.5) internal successors, (52), 10 states have internal predecessors, (52), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-24 00:54:42,883 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 712 transitions. [2024-11-24 00:54:42,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:42,884 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:42,884 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:42,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 00:54:42,885 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:42,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:42,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2007595962, now seen corresponding path program 1 times [2024-11-24 00:54:42,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:42,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057397466] [2024-11-24 00:54:42,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:42,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:43,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:43,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057397466] [2024-11-24 00:54:43,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057397466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:43,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:43,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:54:43,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612770368] [2024-11-24 00:54:43,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:43,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:54:43,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:43,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:54:43,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:54:43,161 INFO L87 Difference]: Start difference. First operand 604 states and 712 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:54:43,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:43,605 INFO L93 Difference]: Finished difference Result 1121 states and 1322 transitions. [2024-11-24 00:54:43,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:54:43,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 129 [2024-11-24 00:54:43,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:43,610 INFO L225 Difference]: With dead ends: 1121 [2024-11-24 00:54:43,610 INFO L226 Difference]: Without dead ends: 646 [2024-11-24 00:54:43,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:54:43,612 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 90 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:43,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 579 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:54:43,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2024-11-24 00:54:43,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 565. [2024-11-24 00:54:43,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 469 states have (on average 1.1449893390191899) internal successors, (537), 472 states have internal predecessors, (537), 64 states have call successors, (64), 31 states have call predecessors, (64), 31 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-24 00:54:43,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 665 transitions. [2024-11-24 00:54:43,753 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 665 transitions. Word has length 129 [2024-11-24 00:54:43,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:43,754 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 665 transitions. [2024-11-24 00:54:43,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:54:43,755 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 665 transitions. [2024-11-24 00:54:43,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:43,756 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:43,756 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:43,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 00:54:43,757 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:43,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:43,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1227247974, now seen corresponding path program 1 times [2024-11-24 00:54:43,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:43,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496100215] [2024-11-24 00:54:43,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:43,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:46,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:46,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496100215] [2024-11-24 00:54:46,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496100215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:46,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:46,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-24 00:54:46,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846494936] [2024-11-24 00:54:46,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:46,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 00:54:46,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:46,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 00:54:46,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2024-11-24 00:54:46,303 INFO L87 Difference]: Start difference. First operand 565 states and 665 transitions. Second operand has 20 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 20 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-24 00:54:48,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:48,510 INFO L93 Difference]: Finished difference Result 1120 states and 1317 transitions. [2024-11-24 00:54:48,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-24 00:54:48,510 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 20 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-24 00:54:48,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:48,514 INFO L225 Difference]: With dead ends: 1120 [2024-11-24 00:54:48,514 INFO L226 Difference]: Without dead ends: 684 [2024-11-24 00:54:48,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2024-11-24 00:54:48,516 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 91 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:48,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 2484 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 00:54:48,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2024-11-24 00:54:48,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 581. [2024-11-24 00:54:48,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 485 states have (on average 1.1443298969072164) internal successors, (555), 488 states have internal predecessors, (555), 64 states have call successors, (64), 31 states have call predecessors, (64), 31 states have return successors, (64), 61 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-24 00:54:48,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 683 transitions. [2024-11-24 00:54:48,649 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 683 transitions. Word has length 129 [2024-11-24 00:54:48,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:48,650 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 683 transitions. [2024-11-24 00:54:48,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 20 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-24 00:54:48,650 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 683 transitions. [2024-11-24 00:54:48,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:48,652 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:48,652 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:48,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-24 00:54:48,652 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:48,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:48,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1620274984, now seen corresponding path program 1 times [2024-11-24 00:54:48,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:48,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378136684] [2024-11-24 00:54:48,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:48,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:49,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:49,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378136684] [2024-11-24 00:54:49,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378136684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:49,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:49,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 00:54:49,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756925913] [2024-11-24 00:54:49,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:49,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 00:54:49,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:49,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 00:54:49,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:54:49,781 INFO L87 Difference]: Start difference. First operand 581 states and 683 transitions. Second operand has 14 states, 10 states have (on average 5.2) internal successors, (52), 14 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-24 00:54:50,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:50,910 INFO L93 Difference]: Finished difference Result 1125 states and 1323 transitions. [2024-11-24 00:54:50,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 00:54:50,910 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 5.2) internal successors, (52), 14 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) Word has length 129 [2024-11-24 00:54:50,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:50,914 INFO L225 Difference]: With dead ends: 1125 [2024-11-24 00:54:50,914 INFO L226 Difference]: Without dead ends: 665 [2024-11-24 00:54:50,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-24 00:54:50,918 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 128 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:50,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 1390 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:54:50,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2024-11-24 00:54:51,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 571. [2024-11-24 00:54:51,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 472 states have (on average 1.1271186440677967) internal successors, (532), 475 states have internal predecessors, (532), 66 states have call successors, (66), 32 states have call predecessors, (66), 32 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-24 00:54:51,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 664 transitions. [2024-11-24 00:54:51,047 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 664 transitions. Word has length 129 [2024-11-24 00:54:51,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:51,048 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 664 transitions. [2024-11-24 00:54:51,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 5.2) internal successors, (52), 14 states have internal predecessors, (52), 5 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-24 00:54:51,048 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 664 transitions. [2024-11-24 00:54:51,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:51,050 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:51,050 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:51,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-24 00:54:51,050 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:51,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:51,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1378712399, now seen corresponding path program 1 times [2024-11-24 00:54:51,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:51,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790849205] [2024-11-24 00:54:51,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:51,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:51,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:51,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790849205] [2024-11-24 00:54:51,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790849205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:51,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:51,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 00:54:51,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486761354] [2024-11-24 00:54:51,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:51,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:54:51,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:51,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:54:51,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:54:51,893 INFO L87 Difference]: Start difference. First operand 571 states and 664 transitions. Second operand has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-24 00:54:52,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:52,653 INFO L93 Difference]: Finished difference Result 1085 states and 1263 transitions. [2024-11-24 00:54:52,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:54:52,653 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) Word has length 129 [2024-11-24 00:54:52,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:52,657 INFO L225 Difference]: With dead ends: 1085 [2024-11-24 00:54:52,657 INFO L226 Difference]: Without dead ends: 651 [2024-11-24 00:54:52,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:54:52,663 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 79 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:52,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 924 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:54:52,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2024-11-24 00:54:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 567. [2024-11-24 00:54:52,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 468 states have (on average 1.1196581196581197) internal successors, (524), 471 states have internal predecessors, (524), 66 states have call successors, (66), 32 states have call predecessors, (66), 32 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-24 00:54:52,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 656 transitions. [2024-11-24 00:54:52,833 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 656 transitions. Word has length 129 [2024-11-24 00:54:52,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:52,833 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 656 transitions. [2024-11-24 00:54:52,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.5) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-24 00:54:52,834 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 656 transitions. [2024-11-24 00:54:52,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:54:52,836 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:52,837 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:52,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-24 00:54:52,837 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:52,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:52,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1361261480, now seen corresponding path program 1 times [2024-11-24 00:54:52,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:52,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120366412] [2024-11-24 00:54:52,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:52,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:53,259 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:53,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:53,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120366412] [2024-11-24 00:54:53,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120366412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:53,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:53,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:54:53,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675612356] [2024-11-24 00:54:53,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:53,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:54:53,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:53,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:54:53,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:54:53,261 INFO L87 Difference]: Start difference. First operand 567 states and 656 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:54:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:53,618 INFO L93 Difference]: Finished difference Result 960 states and 1112 transitions. [2024-11-24 00:54:53,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:54:53,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 129 [2024-11-24 00:54:53,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:53,622 INFO L225 Difference]: With dead ends: 960 [2024-11-24 00:54:53,622 INFO L226 Difference]: Without dead ends: 530 [2024-11-24 00:54:53,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:54:53,624 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 86 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:53,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 708 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:54:53,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-24 00:54:53,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 528. [2024-11-24 00:54:53,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 429 states have (on average 1.1118881118881119) internal successors, (477), 432 states have internal predecessors, (477), 66 states have call successors, (66), 32 states have call predecessors, (66), 32 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-24 00:54:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 609 transitions. [2024-11-24 00:54:53,780 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 609 transitions. Word has length 129 [2024-11-24 00:54:53,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:53,780 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 609 transitions. [2024-11-24 00:54:53,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:54:53,781 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 609 transitions. [2024-11-24 00:54:53,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-24 00:54:53,782 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:53,782 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:53,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-24 00:54:53,783 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:53,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:53,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1388191522, now seen corresponding path program 1 times [2024-11-24 00:54:53,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:53,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354628943] [2024-11-24 00:54:53,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:53,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:53,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:53,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354628943] [2024-11-24 00:54:53,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354628943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:53,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:53,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:54:53,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125394495] [2024-11-24 00:54:53,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:53,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:54:53,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:53,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:54:53,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:54:53,928 INFO L87 Difference]: Start difference. First operand 528 states and 609 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:54:54,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:54,145 INFO L93 Difference]: Finished difference Result 921 states and 1064 transitions. [2024-11-24 00:54:54,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:54:54,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 131 [2024-11-24 00:54:54,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:54,148 INFO L225 Difference]: With dead ends: 921 [2024-11-24 00:54:54,148 INFO L226 Difference]: Without dead ends: 530 [2024-11-24 00:54:54,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:54:54,149 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 66 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:54,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 465 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:54:54,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-24 00:54:54,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 528. [2024-11-24 00:54:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 429 states have (on average 1.0932400932400932) internal successors, (469), 432 states have internal predecessors, (469), 66 states have call successors, (66), 32 states have call predecessors, (66), 32 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-24 00:54:54,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 601 transitions. [2024-11-24 00:54:54,290 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 601 transitions. Word has length 131 [2024-11-24 00:54:54,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:54,291 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 601 transitions. [2024-11-24 00:54:54,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:54:54,291 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 601 transitions. [2024-11-24 00:54:54,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-24 00:54:54,293 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:54,293 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:54,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-24 00:54:54,293 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:54,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:54,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1501672288, now seen corresponding path program 1 times [2024-11-24 00:54:54,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:54,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064506289] [2024-11-24 00:54:54,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:54,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 12 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-24 00:54:55,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:55,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064506289] [2024-11-24 00:54:55,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064506289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:55,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485739021] [2024-11-24 00:54:55,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:55,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:55,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:55,125 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:55,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:54:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:55,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-24 00:54:55,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:55,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-24 00:54:55,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-24 00:54:55,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:54:55,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2024-11-24 00:54:56,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:54:56,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2024-11-24 00:54:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 231 proven. 12 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2024-11-24 00:54:56,124 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:54:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 72 proven. 15 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-11-24 00:54:56,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485739021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:54:56,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:54:56,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 23 [2024-11-24 00:54:56,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332494463] [2024-11-24 00:54:56,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:54:56,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-24 00:54:56,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:56,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-24 00:54:56,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2024-11-24 00:54:56,879 INFO L87 Difference]: Start difference. First operand 528 states and 601 transitions. Second operand has 23 states, 19 states have (on average 6.631578947368421) internal successors, (126), 23 states have internal predecessors, (126), 8 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (22), 4 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-24 00:54:57,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:57,876 INFO L93 Difference]: Finished difference Result 925 states and 1046 transitions. [2024-11-24 00:54:57,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 00:54:57,877 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 6.631578947368421) internal successors, (126), 23 states have internal predecessors, (126), 8 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (22), 4 states have call predecessors, (22), 8 states have call successors, (22) Word has length 136 [2024-11-24 00:54:57,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:57,881 INFO L225 Difference]: With dead ends: 925 [2024-11-24 00:54:57,881 INFO L226 Difference]: Without dead ends: 534 [2024-11-24 00:54:57,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 258 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=219, Invalid=837, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 00:54:57,886 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 240 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:57,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 544 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:54:57,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-24 00:54:58,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 422. [2024-11-24 00:54:58,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 341 states have (on average 1.0879765395894427) internal successors, (371), 343 states have internal predecessors, (371), 52 states have call successors, (52), 28 states have call predecessors, (52), 28 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 00:54:58,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 475 transitions. [2024-11-24 00:54:58,016 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 475 transitions. Word has length 136 [2024-11-24 00:54:58,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:58,017 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 475 transitions. [2024-11-24 00:54:58,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 6.631578947368421) internal successors, (126), 23 states have internal predecessors, (126), 8 states have call successors, (22), 3 states have call predecessors, (22), 7 states have return successors, (22), 4 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-24 00:54:58,017 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 475 transitions. [2024-11-24 00:54:58,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-24 00:54:58,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:58,019 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:58,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 00:54:58,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:58,224 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:58,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:58,225 INFO L85 PathProgramCache]: Analyzing trace with hash -916891456, now seen corresponding path program 1 times [2024-11-24 00:54:58,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:58,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079545740] [2024-11-24 00:54:58,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:58,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 00:54:58,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856078514] [2024-11-24 00:54:58,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:58,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:58,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:58,411 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:58,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:54:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:58,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-24 00:54:59,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:59,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-24 00:54:59,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 00:54:59,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 00:54:59,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 00:54:59,316 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:54:59,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 26 [2024-11-24 00:54:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:54:59,352 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:54:59,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:59,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079545740] [2024-11-24 00:54:59,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 00:54:59,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856078514] [2024-11-24 00:54:59,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856078514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:59,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:59,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:54:59,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911486571] [2024-11-24 00:54:59,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:59,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:54:59,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:59,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:54:59,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:54:59,356 INFO L87 Difference]: Start difference. First operand 422 states and 475 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:54:59,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:59,895 INFO L93 Difference]: Finished difference Result 1033 states and 1155 transitions. [2024-11-24 00:54:59,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:54:59,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 136 [2024-11-24 00:54:59,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:59,901 INFO L225 Difference]: With dead ends: 1033 [2024-11-24 00:54:59,901 INFO L226 Difference]: Without dead ends: 659 [2024-11-24 00:54:59,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:54:59,903 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 59 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:59,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 543 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:54:59,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-11-24 00:55:00,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 479. [2024-11-24 00:55:00,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 398 states have (on average 1.0678391959798994) internal successors, (425), 400 states have internal predecessors, (425), 52 states have call successors, (52), 28 states have call predecessors, (52), 28 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 00:55:00,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 529 transitions. [2024-11-24 00:55:00,018 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 529 transitions. Word has length 136 [2024-11-24 00:55:00,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:00,019 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 529 transitions. [2024-11-24 00:55:00,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:55:00,019 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 529 transitions. [2024-11-24 00:55:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-24 00:55:00,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:00,021 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:00,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 00:55:00,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-24 00:55:00,225 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:00,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:00,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1279013824, now seen corresponding path program 1 times [2024-11-24 00:55:00,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:00,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157845454] [2024-11-24 00:55:00,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:00,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 00:55:00,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669093368] [2024-11-24 00:55:00,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:00,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:00,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:00,338 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:00,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:55:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:01,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-24 00:55:01,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:01,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-24 00:55:01,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 00:55:01,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 00:55:01,078 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:55:01,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-24 00:55:01,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:55:01,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 37 [2024-11-24 00:55:01,735 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:55:01,735 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:55:01,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:01,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157845454] [2024-11-24 00:55:01,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 00:55:01,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669093368] [2024-11-24 00:55:01,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669093368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:01,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:01,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:55:01,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165055212] [2024-11-24 00:55:01,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:01,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:55:01,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:01,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:55:01,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:55:01,737 INFO L87 Difference]: Start difference. First operand 479 states and 529 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:55:02,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:02,980 INFO L93 Difference]: Finished difference Result 937 states and 1034 transitions. [2024-11-24 00:55:02,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:55:02,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 137 [2024-11-24 00:55:02,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:02,985 INFO L225 Difference]: With dead ends: 937 [2024-11-24 00:55:02,985 INFO L226 Difference]: Without dead ends: 613 [2024-11-24 00:55:02,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:55:02,986 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 115 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:02,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 893 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:55:02,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-24 00:55:03,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 485. [2024-11-24 00:55:03,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 404 states have (on average 1.066831683168317) internal successors, (431), 406 states have internal predecessors, (431), 52 states have call successors, (52), 28 states have call predecessors, (52), 28 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 00:55:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 535 transitions. [2024-11-24 00:55:03,122 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 535 transitions. Word has length 137 [2024-11-24 00:55:03,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:03,122 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 535 transitions. [2024-11-24 00:55:03,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:55:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 535 transitions. [2024-11-24 00:55:03,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-24 00:55:03,124 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:03,125 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:03,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 00:55:03,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-24 00:55:03,326 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:03,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:03,327 INFO L85 PathProgramCache]: Analyzing trace with hash -466731722, now seen corresponding path program 1 times [2024-11-24 00:55:03,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:03,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402084091] [2024-11-24 00:55:03,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:03,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 78 proven. 6 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2024-11-24 00:55:04,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:04,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402084091] [2024-11-24 00:55:04,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402084091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:04,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029937046] [2024-11-24 00:55:04,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:04,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:04,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:04,342 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:04,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:55:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:04,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 00:55:04,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:04,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-24 00:55:04,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 59 [2024-11-24 00:55:05,429 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:55:05,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 73 [2024-11-24 00:55:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 149 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-24 00:55:05,861 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:55:07,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:55:07,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 1 [2024-11-24 00:55:07,279 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2024-11-24 00:55:07,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029937046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:55:07,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:55:07,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 25 [2024-11-24 00:55:07,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115220572] [2024-11-24 00:55:07,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:55:07,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-24 00:55:07,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:07,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-24 00:55:07,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:55:07,282 INFO L87 Difference]: Start difference. First operand 485 states and 535 transitions. Second operand has 25 states, 19 states have (on average 6.105263157894737) internal successors, (116), 24 states have internal predecessors, (116), 9 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (21), 4 states have call predecessors, (21), 9 states have call successors, (21) [2024-11-24 00:55:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:08,996 INFO L93 Difference]: Finished difference Result 796 states and 876 transitions. [2024-11-24 00:55:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 00:55:08,997 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 6.105263157894737) internal successors, (116), 24 states have internal predecessors, (116), 9 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (21), 4 states have call predecessors, (21), 9 states have call successors, (21) Word has length 137 [2024-11-24 00:55:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:08,999 INFO L225 Difference]: With dead ends: 796 [2024-11-24 00:55:08,999 INFO L226 Difference]: Without dead ends: 466 [2024-11-24 00:55:09,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 263 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=220, Invalid=902, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 00:55:09,001 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 179 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:09,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 627 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 00:55:09,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-11-24 00:55:09,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 450. [2024-11-24 00:55:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 367 states have (on average 1.0626702997275204) internal successors, (390), 369 states have internal predecessors, (390), 52 states have call successors, (52), 30 states have call predecessors, (52), 30 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-24 00:55:09,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 494 transitions. [2024-11-24 00:55:09,119 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 494 transitions. Word has length 137 [2024-11-24 00:55:09,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:09,120 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 494 transitions. [2024-11-24 00:55:09,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 6.105263157894737) internal successors, (116), 24 states have internal predecessors, (116), 9 states have call successors, (21), 3 states have call predecessors, (21), 6 states have return successors, (21), 4 states have call predecessors, (21), 9 states have call successors, (21) [2024-11-24 00:55:09,120 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 494 transitions. [2024-11-24 00:55:09,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-24 00:55:09,122 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:09,122 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:09,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 00:55:09,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:09,323 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:09,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:09,323 INFO L85 PathProgramCache]: Analyzing trace with hash -792964280, now seen corresponding path program 1 times [2024-11-24 00:55:09,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:09,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949137775] [2024-11-24 00:55:09,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:09,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 00:55:09,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712659013] [2024-11-24 00:55:09,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:09,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:09,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:09,410 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:09,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 00:55:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:09,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-24 00:55:09,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:09,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-24 00:55:09,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 00:55:09,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 00:55:09,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 00:55:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:55:10,250 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:55:10,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:10,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949137775] [2024-11-24 00:55:10,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 00:55:10,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712659013] [2024-11-24 00:55:10,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712659013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:10,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:10,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:55:10,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111399184] [2024-11-24 00:55:10,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:10,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:55:10,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:10,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:55:10,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:55:10,253 INFO L87 Difference]: Start difference. First operand 450 states and 494 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:55:11,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:11,088 INFO L93 Difference]: Finished difference Result 989 states and 1080 transitions. [2024-11-24 00:55:11,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:55:11,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 137 [2024-11-24 00:55:11,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:11,093 INFO L225 Difference]: With dead ends: 989 [2024-11-24 00:55:11,093 INFO L226 Difference]: Without dead ends: 542 [2024-11-24 00:55:11,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:55:11,095 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 46 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:11,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 346 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:55:11,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-24 00:55:11,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 335. [2024-11-24 00:55:11,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 282 states have (on average 1.0602836879432624) internal successors, (299), 282 states have internal predecessors, (299), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-24 00:55:11,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 363 transitions. [2024-11-24 00:55:11,242 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 363 transitions. Word has length 137 [2024-11-24 00:55:11,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:11,243 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 363 transitions. [2024-11-24 00:55:11,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:55:11,243 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 363 transitions. [2024-11-24 00:55:11,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-24 00:55:11,244 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:11,244 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:11,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-24 00:55:11,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:11,446 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:11,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:11,447 INFO L85 PathProgramCache]: Analyzing trace with hash 935866485, now seen corresponding path program 1 times [2024-11-24 00:55:11,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:11,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098229291] [2024-11-24 00:55:11,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 00:55:11,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297713325] [2024-11-24 00:55:11,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:11,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:11,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:11,596 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:11,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 00:55:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:12,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-24 00:55:12,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:12,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-24 00:55:12,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 00:55:12,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 00:55:12,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 00:55:12,620 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:55:12,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 28 [2024-11-24 00:55:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2024-11-24 00:55:12,671 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:55:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:55:13,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:13,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098229291] [2024-11-24 00:55:13,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 00:55:13,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297713325] [2024-11-24 00:55:13,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297713325] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:13,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:55:13,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2024-11-24 00:55:13,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064580140] [2024-11-24 00:55:13,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:13,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:55:13,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:13,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:55:13,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:55:13,069 INFO L87 Difference]: Start difference. First operand 335 states and 363 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:55:13,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:13,610 INFO L93 Difference]: Finished difference Result 617 states and 670 transitions. [2024-11-24 00:55:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:55:13,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 138 [2024-11-24 00:55:13,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:13,614 INFO L225 Difference]: With dead ends: 617 [2024-11-24 00:55:13,614 INFO L226 Difference]: Without dead ends: 393 [2024-11-24 00:55:13,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 264 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:55:13,615 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 123 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:13,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 470 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:55:13,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2024-11-24 00:55:13,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 335. [2024-11-24 00:55:13,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 282 states have (on average 1.0567375886524824) internal successors, (298), 282 states have internal predecessors, (298), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-24 00:55:13,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 362 transitions. [2024-11-24 00:55:13,720 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 362 transitions. Word has length 138 [2024-11-24 00:55:13,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:13,720 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 362 transitions. [2024-11-24 00:55:13,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:55:13,721 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 362 transitions. [2024-11-24 00:55:13,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-24 00:55:13,722 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:13,722 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:13,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-24 00:55:13,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-24 00:55:13,923 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:13,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:13,923 INFO L85 PathProgramCache]: Analyzing trace with hash 271925311, now seen corresponding path program 1 times [2024-11-24 00:55:13,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:13,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103739844] [2024-11-24 00:55:13,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:13,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 00:55:14,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588689890] [2024-11-24 00:55:14,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:14,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:14,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:14,056 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:14,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 00:55:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:14,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-24 00:55:14,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:14,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-24 00:55:14,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 00:55:14,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 00:55:14,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 00:55:14,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-24 00:55:14,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 28 [2024-11-24 00:55:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:55:14,640 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:55:14,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:14,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103739844] [2024-11-24 00:55:14,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 00:55:14,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588689890] [2024-11-24 00:55:14,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588689890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:14,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:14,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:55:14,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396205333] [2024-11-24 00:55:14,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:14,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:55:14,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:14,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:55:14,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:55:14,642 INFO L87 Difference]: Start difference. First operand 335 states and 362 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:55:15,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:15,074 INFO L93 Difference]: Finished difference Result 661 states and 715 transitions. [2024-11-24 00:55:15,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:55:15,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 138 [2024-11-24 00:55:15,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:15,076 INFO L225 Difference]: With dead ends: 661 [2024-11-24 00:55:15,076 INFO L226 Difference]: Without dead ends: 437 [2024-11-24 00:55:15,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:55:15,077 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 50 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:15,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 457 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:55:15,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-11-24 00:55:15,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 335. [2024-11-24 00:55:15,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 282 states have (on average 1.053191489361702) internal successors, (297), 282 states have internal predecessors, (297), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-24 00:55:15,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 361 transitions. [2024-11-24 00:55:15,166 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 361 transitions. Word has length 138 [2024-11-24 00:55:15,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:15,166 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 361 transitions. [2024-11-24 00:55:15,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:55:15,166 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 361 transitions. [2024-11-24 00:55:15,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-24 00:55:15,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:15,168 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:15,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-24 00:55:15,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8af4988-46d5-4a3b-8c75-197b949232f5/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:15,369 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:15,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:15,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1134112650, now seen corresponding path program 1 times [2024-11-24 00:55:15,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:15,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297856902] [2024-11-24 00:55:15,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:15,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:55:16,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:16,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297856902] [2024-11-24 00:55:16,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297856902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:16,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:16,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 00:55:16,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243653040] [2024-11-24 00:55:16,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:16,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 00:55:16,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:16,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 00:55:16,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:55:16,808 INFO L87 Difference]: Start difference. First operand 335 states and 361 transitions. Second operand has 14 states, 13 states have (on average 5.0) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:55:17,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:17,536 INFO L93 Difference]: Finished difference Result 400 states and 427 transitions. [2024-11-24 00:55:17,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:55:17,537 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2024-11-24 00:55:17,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:17,538 INFO L225 Difference]: With dead ends: 400 [2024-11-24 00:55:17,538 INFO L226 Difference]: Without dead ends: 398 [2024-11-24 00:55:17,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-11-24 00:55:17,539 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 31 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:17,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1445 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:55:17,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-24 00:55:17,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 379. [2024-11-24 00:55:17,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 326 states have (on average 1.049079754601227) internal successors, (342), 326 states have internal predecessors, (342), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-24 00:55:17,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 406 transitions. [2024-11-24 00:55:17,640 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 406 transitions. Word has length 142 [2024-11-24 00:55:17,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:17,640 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 406 transitions. [2024-11-24 00:55:17,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 14 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:55:17,640 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 406 transitions. [2024-11-24 00:55:17,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-24 00:55:17,641 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:17,641 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:17,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-24 00:55:17,642 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:17,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:17,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1814171020, now seen corresponding path program 1 times [2024-11-24 00:55:17,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:17,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506552746] [2024-11-24 00:55:17,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:17,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:55:18,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:18,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506552746] [2024-11-24 00:55:18,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506552746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:18,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:18,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:55:18,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652838540] [2024-11-24 00:55:18,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:18,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:55:18,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:18,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:55:18,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:55:18,192 INFO L87 Difference]: Start difference. First operand 379 states and 406 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:55:18,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:18,453 INFO L93 Difference]: Finished difference Result 681 states and 727 transitions. [2024-11-24 00:55:18,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:55:18,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2024-11-24 00:55:18,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:18,457 INFO L225 Difference]: With dead ends: 681 [2024-11-24 00:55:18,457 INFO L226 Difference]: Without dead ends: 413 [2024-11-24 00:55:18,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:55:18,458 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 45 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:18,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 439 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:55:18,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-11-24 00:55:18,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 379. [2024-11-24 00:55:18,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 326 states have (on average 1.0460122699386503) internal successors, (341), 326 states have internal predecessors, (341), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-24 00:55:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 405 transitions. [2024-11-24 00:55:18,592 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 405 transitions. Word has length 142 [2024-11-24 00:55:18,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:18,592 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 405 transitions. [2024-11-24 00:55:18,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:55:18,593 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 405 transitions. [2024-11-24 00:55:18,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-24 00:55:18,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:18,594 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:18,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-24 00:55:18,595 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:18,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:18,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1156744904, now seen corresponding path program 1 times [2024-11-24 00:55:18,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:18,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285990068] [2024-11-24 00:55:18,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:18,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:55:19,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:19,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285990068] [2024-11-24 00:55:19,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285990068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:19,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:19,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:55:19,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754161812] [2024-11-24 00:55:19,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:19,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:55:19,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:19,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:55:19,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:55:19,101 INFO L87 Difference]: Start difference. First operand 379 states and 405 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:55:19,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:19,354 INFO L93 Difference]: Finished difference Result 662 states and 706 transitions. [2024-11-24 00:55:19,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:55:19,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2024-11-24 00:55:19,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:19,356 INFO L225 Difference]: With dead ends: 662 [2024-11-24 00:55:19,356 INFO L226 Difference]: Without dead ends: 394 [2024-11-24 00:55:19,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:55:19,357 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 25 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:19,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 565 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:55:19,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-24 00:55:19,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 379. [2024-11-24 00:55:19,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 326 states have (on average 1.0429447852760736) internal successors, (340), 326 states have internal predecessors, (340), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-24 00:55:19,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 404 transitions. [2024-11-24 00:55:19,438 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 404 transitions. Word has length 142 [2024-11-24 00:55:19,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:19,438 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 404 transitions. [2024-11-24 00:55:19,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-24 00:55:19,439 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 404 transitions. [2024-11-24 00:55:19,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-24 00:55:19,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:19,440 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:19,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-24 00:55:19,440 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:19,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:19,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1836803274, now seen corresponding path program 1 times [2024-11-24 00:55:19,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:19,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160813940] [2024-11-24 00:55:19,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:19,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-24 00:55:20,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:20,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160813940] [2024-11-24 00:55:20,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160813940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:20,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:20,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-24 00:55:20,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112265386] [2024-11-24 00:55:20,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:20,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:55:20,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:20,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:55:20,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:55:20,113 INFO L87 Difference]: Start difference. First operand 379 states and 404 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:55:20,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:20,710 INFO L93 Difference]: Finished difference Result 492 states and 534 transitions. [2024-11-24 00:55:20,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:55:20,711 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 142 [2024-11-24 00:55:20,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:20,712 INFO L225 Difference]: With dead ends: 492 [2024-11-24 00:55:20,712 INFO L226 Difference]: Without dead ends: 0 [2024-11-24 00:55:20,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2024-11-24 00:55:20,713 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 82 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:20,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 1924 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:55:20,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-24 00:55:20,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-24 00:55:20,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:55:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-24 00:55:20,716 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 142 [2024-11-24 00:55:20,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:20,716 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-24 00:55:20,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-24 00:55:20,716 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-24 00:55:20,717 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-24 00:55:20,720 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-24 00:55:20,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-24 00:55:20,725 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:20,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.