./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-6.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_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/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_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/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_f3234c7a-0f9f-4ede-b93f-3fde04191061/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 cec5185ce7c24944b55ad80283733eba2f5aa0d5d2e63517a5d5bc6bcf21ed8e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:48:46,095 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:48:46,177 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:48:46,183 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:48:46,183 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:48:46,216 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:48:46,217 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:48:46,218 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:48:46,218 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:48:46,219 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:48:46,219 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:48:46,220 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:48:46,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:48:46,220 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:48:46,220 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:48:46,221 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:48:46,221 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:48:46,221 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:48:46,221 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:48:46,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:48:46,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:48:46,222 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:48:46,222 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:48:46,222 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:48:46,223 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:48:46,223 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:48:46,223 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:48:46,223 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:48:46,223 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:48:46,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:48:46,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:48:46,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:48:46,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:48:46,224 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:48:46,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:48:46,224 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:48:46,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:48:46,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:48:46,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:48:46,224 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:48:46,224 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:48:46,224 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:48:46,224 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:48:46,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:48:46,225 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:48:46,225 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:48:46,225 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:48:46,225 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:48:46,225 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_f3234c7a-0f9f-4ede-b93f-3fde04191061/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 -> cec5185ce7c24944b55ad80283733eba2f5aa0d5d2e63517a5d5bc6bcf21ed8e [2024-11-23 23:48:46,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:48:46,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:48:46,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:48:46,569 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:48:46,570 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:48:46,571 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-6.i [2024-11-23 23:48:49,544 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/data/53f99fe14/dbc56e487864482c8cd89f5bfb7fa41f/FLAG4b3fadf9b [2024-11-23 23:48:49,900 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:48:49,901 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-6.i [2024-11-23 23:48:49,912 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/data/53f99fe14/dbc56e487864482c8cd89f5bfb7fa41f/FLAG4b3fadf9b [2024-11-23 23:48:49,928 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/data/53f99fe14/dbc56e487864482c8cd89f5bfb7fa41f [2024-11-23 23:48:49,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:48:49,932 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:48:49,933 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:48:49,933 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:48:49,938 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:48:49,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:48:49" (1/1) ... [2024-11-23 23:48:49,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24aaf659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:49, skipping insertion in model container [2024-11-23 23:48:49,940 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:48:49" (1/1) ... [2024-11-23 23:48:49,989 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:48:50,186 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_f3234c7a-0f9f-4ede-b93f-3fde04191061/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-6.i[915,928] [2024-11-23 23:48:50,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:48:50,383 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:48:50,395 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_f3234c7a-0f9f-4ede-b93f-3fde04191061/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-6.i[915,928] [2024-11-23 23:48:50,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:48:50,502 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:48:50,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:50 WrapperNode [2024-11-23 23:48:50,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:48:50,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:48:50,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:48:50,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:48:50,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:50" (1/1) ... [2024-11-23 23:48:50,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:50" (1/1) ... [2024-11-23 23:48:50,609 INFO L138 Inliner]: procedures = 26, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 521 [2024-11-23 23:48:50,609 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:48:50,610 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:48:50,610 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:48:50,610 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:48:50,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:50" (1/1) ... [2024-11-23 23:48:50,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:50" (1/1) ... [2024-11-23 23:48:50,626 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:50" (1/1) ... [2024-11-23 23:48:50,662 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:48:50,663 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:50" (1/1) ... [2024-11-23 23:48:50,663 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:50" (1/1) ... [2024-11-23 23:48:50,697 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:50" (1/1) ... [2024-11-23 23:48:50,705 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:50" (1/1) ... [2024-11-23 23:48:50,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:50" (1/1) ... [2024-11-23 23:48:50,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:50" (1/1) ... [2024-11-23 23:48:50,738 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:50" (1/1) ... [2024-11-23 23:48:50,762 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:48:50,763 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:48:50,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:48:50,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:48:50,770 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:50" (1/1) ... [2024-11-23 23:48:50,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:48:50,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:48:50,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:48:50,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:48:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:48:50,832 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 23:48:50,833 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 23:48:50,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:48:50,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:48:50,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:48:51,006 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:48:51,011 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:48:52,222 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-23 23:48:52,224 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:48:52,246 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:48:52,250 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 23:48:52,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:48:52 BoogieIcfgContainer [2024-11-23 23:48:52,250 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:48:52,252 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:48:52,252 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:48:52,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:48:52,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:48:49" (1/3) ... [2024-11-23 23:48:52,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4952b227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:48:52, skipping insertion in model container [2024-11-23 23:48:52,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:48:50" (2/3) ... [2024-11-23 23:48:52,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4952b227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:48:52, skipping insertion in model container [2024-11-23 23:48:52,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:48:52" (3/3) ... [2024-11-23 23:48:52,264 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-6.i [2024-11-23 23:48:52,281 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:48:52,284 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-6.i that has 2 procedures, 217 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 23:48:52,350 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:48:52,362 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;@5409c9ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:48:52,362 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:48:52,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 217 states, 143 states have (on average 1.5244755244755244) internal successors, (218), 144 states have internal predecessors, (218), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2024-11-23 23:48:52,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-11-23 23:48:52,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:48:52,390 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:48:52,390 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:48:52,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:48:52,396 INFO L85 PathProgramCache]: Analyzing trace with hash -792079429, now seen corresponding path program 1 times [2024-11-23 23:48:52,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:48:52,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738464781] [2024-11-23 23:48:52,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:48:52,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:48:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:48:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2024-11-23 23:48:53,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:48:53,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738464781] [2024-11-23 23:48:53,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738464781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:48:53,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229331876] [2024-11-23 23:48:53,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:48:53,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:48:53,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:48:53,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:48:53,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:48:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:48:53,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 23:48:53,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:48:53,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 9800 trivial. 0 not checked. [2024-11-23 23:48:53,699 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:48:53,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229331876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:48:53,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 23:48:53,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 23:48:53,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952156308] [2024-11-23 23:48:53,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:48:53,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 23:48:53,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:48:53,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 23:48:53,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:48:53,733 INFO L87 Difference]: Start difference. First operand has 217 states, 143 states have (on average 1.5244755244755244) internal successors, (218), 144 states have internal predecessors, (218), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) [2024-11-23 23:48:53,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:48:53,792 INFO L93 Difference]: Finished difference Result 427 states and 785 transitions. [2024-11-23 23:48:53,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 23:48:53,794 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) Word has length 448 [2024-11-23 23:48:53,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:48:53,804 INFO L225 Difference]: With dead ends: 427 [2024-11-23 23:48:53,804 INFO L226 Difference]: Without dead ends: 213 [2024-11-23 23:48:53,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 23:48:53,812 INFO L435 NwaCegarLoop]: 349 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, 349 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:48:53,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:48:53,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-23 23:48:53,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2024-11-23 23:48:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 140 states have (on average 1.4785714285714286) internal successors, (207), 140 states have internal predecessors, (207), 71 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2024-11-23 23:48:53,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 349 transitions. [2024-11-23 23:48:53,908 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 349 transitions. Word has length 448 [2024-11-23 23:48:53,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:48:53,908 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 349 transitions. [2024-11-23 23:48:53,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 2 states have call successors, (71) [2024-11-23 23:48:53,909 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 349 transitions. [2024-11-23 23:48:53,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2024-11-23 23:48:53,931 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:48:53,931 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:48:53,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 23:48:54,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:48:54,133 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:48:54,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:48:54,134 INFO L85 PathProgramCache]: Analyzing trace with hash -614097462, now seen corresponding path program 1 times [2024-11-23 23:48:54,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:48:54,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211365106] [2024-11-23 23:48:54,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:48:54,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:48:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:48:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2024-11-23 23:48:54,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:48:54,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211365106] [2024-11-23 23:48:54,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211365106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:48:54,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:48:54,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:48:54,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898819476] [2024-11-23 23:48:54,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:48:54,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:48:54,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:48:54,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:48:54,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:48:54,894 INFO L87 Difference]: Start difference. First operand 213 states and 349 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-23 23:48:55,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:48:55,053 INFO L93 Difference]: Finished difference Result 529 states and 870 transitions. [2024-11-23 23:48:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:48:55,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 449 [2024-11-23 23:48:55,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:48:55,063 INFO L225 Difference]: With dead ends: 529 [2024-11-23 23:48:55,063 INFO L226 Difference]: Without dead ends: 319 [2024-11-23 23:48:55,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:48:55,068 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 165 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:48:55,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 757 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:48:55,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-23 23:48:55,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 316. [2024-11-23 23:48:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 229 states have (on average 1.519650655021834) internal successors, (348), 230 states have internal predecessors, (348), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 83 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-23 23:48:55,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 516 transitions. [2024-11-23 23:48:55,153 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 516 transitions. Word has length 449 [2024-11-23 23:48:55,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:48:55,154 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 516 transitions. [2024-11-23 23:48:55,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-23 23:48:55,158 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 516 transitions. [2024-11-23 23:48:55,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2024-11-23 23:48:55,172 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:48:55,172 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:48:55,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:48:55,172 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:48:55,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:48:55,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1125511341, now seen corresponding path program 1 times [2024-11-23 23:48:55,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:48:55,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824085389] [2024-11-23 23:48:55,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:48:55,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:48:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:48:55,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2024-11-23 23:48:55,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:48:55,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824085389] [2024-11-23 23:48:55,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824085389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:48:55,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:48:55,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:48:55,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471659210] [2024-11-23 23:48:55,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:48:55,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:48:55,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:48:55,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:48:55,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:48:55,711 INFO L87 Difference]: Start difference. First operand 316 states and 516 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-23 23:48:55,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:48:55,821 INFO L93 Difference]: Finished difference Result 826 states and 1344 transitions. [2024-11-23 23:48:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:48:55,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 451 [2024-11-23 23:48:55,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:48:55,830 INFO L225 Difference]: With dead ends: 826 [2024-11-23 23:48:55,830 INFO L226 Difference]: Without dead ends: 513 [2024-11-23 23:48:55,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:48:55,833 INFO L435 NwaCegarLoop]: 523 mSDtfsCounter, 208 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:48:55,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 848 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:48:55,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-23 23:48:55,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 510. [2024-11-23 23:48:55,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 363 states have (on average 1.4820936639118458) internal successors, (538), 366 states have internal predecessors, (538), 142 states have call successors, (142), 4 states have call predecessors, (142), 4 states have return successors, (142), 139 states have call predecessors, (142), 142 states have call successors, (142) [2024-11-23 23:48:55,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 822 transitions. [2024-11-23 23:48:55,951 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 822 transitions. Word has length 451 [2024-11-23 23:48:55,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:48:55,958 INFO L471 AbstractCegarLoop]: Abstraction has 510 states and 822 transitions. [2024-11-23 23:48:55,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-23 23:48:55,958 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 822 transitions. [2024-11-23 23:48:55,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2024-11-23 23:48:55,991 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:48:55,991 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:48:55,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:48:55,992 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:48:55,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:48:55,992 INFO L85 PathProgramCache]: Analyzing trace with hash 2058517161, now seen corresponding path program 1 times [2024-11-23 23:48:55,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:48:55,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185849205] [2024-11-23 23:48:55,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:48:55,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:48:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:48:56,848 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2024-11-23 23:48:56,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:48:56,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185849205] [2024-11-23 23:48:56,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185849205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:48:56,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:48:56,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:48:56,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728645259] [2024-11-23 23:48:56,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:48:56,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:48:56,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:48:56,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:48:56,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:48:56,852 INFO L87 Difference]: Start difference. First operand 510 states and 822 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-23 23:48:57,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:48:57,322 INFO L93 Difference]: Finished difference Result 1400 states and 2267 transitions. [2024-11-23 23:48:57,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:48:57,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 452 [2024-11-23 23:48:57,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:48:57,331 INFO L225 Difference]: With dead ends: 1400 [2024-11-23 23:48:57,332 INFO L226 Difference]: Without dead ends: 893 [2024-11-23 23:48:57,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:48:57,335 INFO L435 NwaCegarLoop]: 345 mSDtfsCounter, 310 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:48:57,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1028 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:48:57,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2024-11-23 23:48:57,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 827. [2024-11-23 23:48:57,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 607 states have (on average 1.5107084019769357) internal successors, (917), 610 states have internal predecessors, (917), 213 states have call successors, (213), 6 states have call predecessors, (213), 6 states have return successors, (213), 210 states have call predecessors, (213), 213 states have call successors, (213) [2024-11-23 23:48:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1343 transitions. [2024-11-23 23:48:57,480 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1343 transitions. Word has length 452 [2024-11-23 23:48:57,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:48:57,481 INFO L471 AbstractCegarLoop]: Abstraction has 827 states and 1343 transitions. [2024-11-23 23:48:57,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-23 23:48:57,481 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1343 transitions. [2024-11-23 23:48:57,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-23 23:48:57,490 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:48:57,490 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:48:57,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:48:57,491 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:48:57,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:48:57,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1085829748, now seen corresponding path program 1 times [2024-11-23 23:48:57,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:48:57,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585681445] [2024-11-23 23:48:57,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:48:57,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:48:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:48:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2024-11-23 23:48:58,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:48:58,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585681445] [2024-11-23 23:48:58,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585681445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:48:58,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:48:58,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:48:58,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335230591] [2024-11-23 23:48:58,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:48:58,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:48:58,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:48:58,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:48:58,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:48:58,035 INFO L87 Difference]: Start difference. First operand 827 states and 1343 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-23 23:48:58,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:48:58,150 INFO L93 Difference]: Finished difference Result 1985 states and 3219 transitions. [2024-11-23 23:48:58,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:48:58,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 453 [2024-11-23 23:48:58,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:48:58,161 INFO L225 Difference]: With dead ends: 1985 [2024-11-23 23:48:58,162 INFO L226 Difference]: Without dead ends: 1418 [2024-11-23 23:48:58,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:48:58,165 INFO L435 NwaCegarLoop]: 621 mSDtfsCounter, 340 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:48:58,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 960 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:48:58,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2024-11-23 23:48:58,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 875. [2024-11-23 23:48:58,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 655 states have (on average 1.5038167938931297) internal successors, (985), 658 states have internal predecessors, (985), 213 states have call successors, (213), 6 states have call predecessors, (213), 6 states have return successors, (213), 210 states have call predecessors, (213), 213 states have call successors, (213) [2024-11-23 23:48:58,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1411 transitions. [2024-11-23 23:48:58,322 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1411 transitions. Word has length 453 [2024-11-23 23:48:58,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:48:58,323 INFO L471 AbstractCegarLoop]: Abstraction has 875 states and 1411 transitions. [2024-11-23 23:48:58,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-23 23:48:58,323 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1411 transitions. [2024-11-23 23:48:58,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-23 23:48:58,332 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:48:58,332 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:48:58,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:48:58,333 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:48:58,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:48:58,333 INFO L85 PathProgramCache]: Analyzing trace with hash 951816242, now seen corresponding path program 1 times [2024-11-23 23:48:58,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:48:58,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741934243] [2024-11-23 23:48:58,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:48:58,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:48:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:48:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2024-11-23 23:48:59,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:48:59,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741934243] [2024-11-23 23:48:59,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741934243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:48:59,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:48:59,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:48:59,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999227990] [2024-11-23 23:48:59,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:48:59,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:48:59,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:48:59,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:48:59,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:48:59,553 INFO L87 Difference]: Start difference. First operand 875 states and 1411 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-23 23:49:00,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:49:00,255 INFO L93 Difference]: Finished difference Result 2148 states and 3469 transitions. [2024-11-23 23:49:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:49:00,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 453 [2024-11-23 23:49:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:49:00,267 INFO L225 Difference]: With dead ends: 2148 [2024-11-23 23:49:00,267 INFO L226 Difference]: Without dead ends: 1585 [2024-11-23 23:49:00,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:49:00,270 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 197 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:49:00,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 867 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:49:00,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2024-11-23 23:49:00,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1583. [2024-11-23 23:49:00,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1217 states have (on average 1.5094494658997535) internal successors, (1837), 1223 states have internal predecessors, (1837), 355 states have call successors, (355), 10 states have call predecessors, (355), 10 states have return successors, (355), 349 states have call predecessors, (355), 355 states have call successors, (355) [2024-11-23 23:49:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2547 transitions. [2024-11-23 23:49:00,515 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2547 transitions. Word has length 453 [2024-11-23 23:49:00,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:49:00,517 INFO L471 AbstractCegarLoop]: Abstraction has 1583 states and 2547 transitions. [2024-11-23 23:49:00,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-23 23:49:00,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2547 transitions. [2024-11-23 23:49:00,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-23 23:49:00,530 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:49:00,530 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:49:00,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:49:00,531 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:49:00,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:49:00,531 INFO L85 PathProgramCache]: Analyzing trace with hash -737127500, now seen corresponding path program 1 times [2024-11-23 23:49:00,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:49:00,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109267744] [2024-11-23 23:49:00,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:49:00,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:49:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:49:02,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9940 trivial. 0 not checked. [2024-11-23 23:49:02,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:49:02,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109267744] [2024-11-23 23:49:02,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109267744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:49:02,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:49:02,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 23:49:02,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054039573] [2024-11-23 23:49:02,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:49:02,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:49:02,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:49:02,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:49:02,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:49:02,029 INFO L87 Difference]: Start difference. First operand 1583 states and 2547 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-23 23:49:03,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:49:03,181 INFO L93 Difference]: Finished difference Result 7217 states and 11694 transitions. [2024-11-23 23:49:03,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:49:03,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) Word has length 453 [2024-11-23 23:49:03,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:49:03,214 INFO L225 Difference]: With dead ends: 7217 [2024-11-23 23:49:03,214 INFO L226 Difference]: Without dead ends: 5785 [2024-11-23 23:49:03,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-23 23:49:03,221 INFO L435 NwaCegarLoop]: 525 mSDtfsCounter, 938 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:49:03,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 1945 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:49:03,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5785 states. [2024-11-23 23:49:03,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5785 to 2749. [2024-11-23 23:49:03,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 2263 states have (on average 1.5452938577110031) internal successors, (3497), 2277 states have internal predecessors, (3497), 467 states have call successors, (467), 18 states have call predecessors, (467), 18 states have return successors, (467), 453 states have call predecessors, (467), 467 states have call successors, (467) [2024-11-23 23:49:03,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 4431 transitions. [2024-11-23 23:49:03,601 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 4431 transitions. Word has length 453 [2024-11-23 23:49:03,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:49:03,602 INFO L471 AbstractCegarLoop]: Abstraction has 2749 states and 4431 transitions. [2024-11-23 23:49:03,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 1 states have call successors, (71), 1 states have call predecessors, (71), 1 states have return successors, (71), 1 states have call predecessors, (71), 1 states have call successors, (71) [2024-11-23 23:49:03,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 4431 transitions. [2024-11-23 23:49:03,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-23 23:49:03,614 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:49:03,615 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:49:03,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:49:03,615 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:49:03,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:49:03,616 INFO L85 PathProgramCache]: Analyzing trace with hash -313480778, now seen corresponding path program 1 times [2024-11-23 23:49:03,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:49:03,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145752015] [2024-11-23 23:49:03,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:49:03,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:49:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:49:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 33 proven. 177 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2024-11-23 23:49:04,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:49:04,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145752015] [2024-11-23 23:49:04,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145752015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:49:04,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80560965] [2024-11-23 23:49:04,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:49:04,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:49:04,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:49:04,895 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:49:04,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:49:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:49:05,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:49:05,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:49:06,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 3984 proven. 153 refuted. 0 times theorem prover too weak. 5803 trivial. 0 not checked. [2024-11-23 23:49:06,061 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:49:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 57 proven. 153 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2024-11-23 23:49:06,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80560965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:49:06,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:49:06,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-23 23:49:06,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106667329] [2024-11-23 23:49:06,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:49:06,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:49:06,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:49:06,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:49:06,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:49:06,658 INFO L87 Difference]: Start difference. First operand 2749 states and 4431 transitions. Second operand has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 3 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (183), 3 states have call predecessors, (183), 3 states have call successors, (183) [2024-11-23 23:49:09,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:49:09,593 INFO L93 Difference]: Finished difference Result 11210 states and 17598 transitions. [2024-11-23 23:49:09,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-23 23:49:09,594 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 3 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (183), 3 states have call predecessors, (183), 3 states have call successors, (183) Word has length 453 [2024-11-23 23:49:09,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:49:09,643 INFO L225 Difference]: With dead ends: 11210 [2024-11-23 23:49:09,643 INFO L226 Difference]: Without dead ends: 8622 [2024-11-23 23:49:09,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 908 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=457, Invalid=1265, Unknown=0, NotChecked=0, Total=1722 [2024-11-23 23:49:09,654 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 853 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:49:09,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1457 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-23 23:49:09,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8622 states. [2024-11-23 23:49:10,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8622 to 2772. [2024-11-23 23:49:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2772 states, 2175 states have (on average 1.4675862068965517) internal successors, (3192), 2197 states have internal predecessors, (3192), 547 states have call successors, (547), 49 states have call predecessors, (547), 49 states have return successors, (547), 525 states have call predecessors, (547), 547 states have call successors, (547) [2024-11-23 23:49:10,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 4286 transitions. [2024-11-23 23:49:10,129 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 4286 transitions. Word has length 453 [2024-11-23 23:49:10,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:49:10,130 INFO L471 AbstractCegarLoop]: Abstraction has 2772 states and 4286 transitions. [2024-11-23 23:49:10,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.818181818181817) internal successors, (196), 11 states have internal predecessors, (196), 3 states have call successors, (181), 2 states have call predecessors, (181), 4 states have return successors, (183), 3 states have call predecessors, (183), 3 states have call successors, (183) [2024-11-23 23:49:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 4286 transitions. [2024-11-23 23:49:10,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-23 23:49:10,136 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:49:10,136 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:49:10,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:49:10,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-23 23:49:10,341 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:49:10,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:49:10,342 INFO L85 PathProgramCache]: Analyzing trace with hash -43666623, now seen corresponding path program 1 times [2024-11-23 23:49:10,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:49:10,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799910092] [2024-11-23 23:49:10,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:49:10,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:49:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:49:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 186 proven. 24 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2024-11-23 23:49:12,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:49:12,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799910092] [2024-11-23 23:49:12,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799910092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:49:12,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454875870] [2024-11-23 23:49:12,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:49:12,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:49:12,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:49:12,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:49:12,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:49:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:49:12,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-23 23:49:12,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:49:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 2399 proven. 48 refuted. 0 times theorem prover too weak. 7493 trivial. 0 not checked. [2024-11-23 23:49:15,559 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:49:20,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454875870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:49:20,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:49:20,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2024-11-23 23:49:20,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381418074] [2024-11-23 23:49:20,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:49:20,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 23:49:20,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:49:20,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 23:49:20,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-11-23 23:49:20,431 INFO L87 Difference]: Start difference. First operand 2772 states and 4286 transitions. Second operand has 15 states, 15 states have (on average 13.133333333333333) internal successors, (197), 14 states have internal predecessors, (197), 5 states have call successors, (142), 4 states have call predecessors, (142), 6 states have return successors, (142), 5 states have call predecessors, (142), 5 states have call successors, (142) [2024-11-23 23:49:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:49:23,710 INFO L93 Difference]: Finished difference Result 7802 states and 12002 transitions. [2024-11-23 23:49:23,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-23 23:49:23,711 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.133333333333333) internal successors, (197), 14 states have internal predecessors, (197), 5 states have call successors, (142), 4 states have call predecessors, (142), 6 states have return successors, (142), 5 states have call predecessors, (142), 5 states have call successors, (142) Word has length 454 [2024-11-23 23:49:23,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:49:23,740 INFO L225 Difference]: With dead ends: 7802 [2024-11-23 23:49:23,740 INFO L226 Difference]: Without dead ends: 5702 [2024-11-23 23:49:23,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2024-11-23 23:49:23,748 INFO L435 NwaCegarLoop]: 513 mSDtfsCounter, 810 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 3045 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:49:23,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 3045 Invalid, 2533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-23 23:49:23,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5702 states. [2024-11-23 23:49:24,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5702 to 5158. [2024-11-23 23:49:24,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 3977 states have (on average 1.4417902941916017) internal successors, (5734), 4021 states have internal predecessors, (5734), 1075 states have call successors, (1075), 105 states have call predecessors, (1075), 105 states have return successors, (1075), 1031 states have call predecessors, (1075), 1075 states have call successors, (1075) [2024-11-23 23:49:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 7884 transitions. [2024-11-23 23:49:24,540 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 7884 transitions. Word has length 454 [2024-11-23 23:49:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:49:24,542 INFO L471 AbstractCegarLoop]: Abstraction has 5158 states and 7884 transitions. [2024-11-23 23:49:24,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.133333333333333) internal successors, (197), 14 states have internal predecessors, (197), 5 states have call successors, (142), 4 states have call predecessors, (142), 6 states have return successors, (142), 5 states have call predecessors, (142), 5 states have call successors, (142) [2024-11-23 23:49:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 7884 transitions. [2024-11-23 23:49:24,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-23 23:49:24,556 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:49:24,556 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:49:24,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:49:24,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:49:24,760 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:49:24,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:49:24,761 INFO L85 PathProgramCache]: Analyzing trace with hash -70950850, now seen corresponding path program 1 times [2024-11-23 23:49:24,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:49:24,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652986601] [2024-11-23 23:49:24,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:49:24,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:49:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:49:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 105 proven. 105 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2024-11-23 23:49:25,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:49:25,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652986601] [2024-11-23 23:49:25,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652986601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:49:25,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872959650] [2024-11-23 23:49:25,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:49:25,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:49:25,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:49:25,539 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:49:25,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:49:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:49:25,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:49:25,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:49:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 5040 proven. 105 refuted. 0 times theorem prover too weak. 4795 trivial. 0 not checked. [2024-11-23 23:49:26,465 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:49:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 105 proven. 105 refuted. 0 times theorem prover too weak. 9730 trivial. 0 not checked. [2024-11-23 23:49:27,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872959650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:49:27,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:49:27,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-23 23:49:27,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675179329] [2024-11-23 23:49:27,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:49:27,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:49:27,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:49:27,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:49:27,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:49:27,260 INFO L87 Difference]: Start difference. First operand 5158 states and 7884 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 3 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 3 states have call predecessors, (142), 3 states have call successors, (142) [2024-11-23 23:49:28,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:49:28,404 INFO L93 Difference]: Finished difference Result 9863 states and 15001 transitions. [2024-11-23 23:49:28,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:49:28,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 3 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 3 states have call predecessors, (142), 3 states have call successors, (142) Word has length 454 [2024-11-23 23:49:28,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:49:28,433 INFO L225 Difference]: With dead ends: 9863 [2024-11-23 23:49:28,434 INFO L226 Difference]: Without dead ends: 5210 [2024-11-23 23:49:28,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 905 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:49:28,448 INFO L435 NwaCegarLoop]: 263 mSDtfsCounter, 525 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:49:28,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 644 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:49:28,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5210 states. [2024-11-23 23:49:29,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5210 to 5170. [2024-11-23 23:49:29,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5170 states, 3980 states have (on average 1.4354271356783919) internal successors, (5713), 4024 states have internal predecessors, (5713), 1075 states have call successors, (1075), 114 states have call predecessors, (1075), 114 states have return successors, (1075), 1031 states have call predecessors, (1075), 1075 states have call successors, (1075) [2024-11-23 23:49:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5170 states to 5170 states and 7863 transitions. [2024-11-23 23:49:29,159 INFO L78 Accepts]: Start accepts. Automaton has 5170 states and 7863 transitions. Word has length 454 [2024-11-23 23:49:29,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:49:29,160 INFO L471 AbstractCegarLoop]: Abstraction has 5170 states and 7863 transitions. [2024-11-23 23:49:29,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 3 states have call successors, (141), 2 states have call predecessors, (141), 4 states have return successors, (142), 3 states have call predecessors, (142), 3 states have call successors, (142) [2024-11-23 23:49:29,161 INFO L276 IsEmpty]: Start isEmpty. Operand 5170 states and 7863 transitions. [2024-11-23 23:49:29,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-23 23:49:29,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:49:29,167 INFO L218 NwaCegarLoop]: trace histogram [71, 71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:49:29,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:49:29,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:49:29,368 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:49:29,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:49:29,369 INFO L85 PathProgramCache]: Analyzing trace with hash 989708094, now seen corresponding path program 1 times [2024-11-23 23:49:29,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:49:29,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574232160] [2024-11-23 23:49:29,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:49:29,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:49:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:49:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 558 proven. 54 refuted. 0 times theorem prover too weak. 9328 trivial. 0 not checked. [2024-11-23 23:49:32,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:49:32,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574232160] [2024-11-23 23:49:32,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574232160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:49:32,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014023573] [2024-11-23 23:49:32,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:49:32,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:49:32,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:49:32,394 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:49:32,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3234c7a-0f9f-4ede-b93f-3fde04191061/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:49:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:49:32,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-23 23:49:32,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:49:39,146 INFO L134 CoverageAnalysis]: Checked inductivity of 9940 backedges. 6544 proven. 288 refuted. 0 times theorem prover too weak. 3108 trivial. 0 not checked. [2024-11-23 23:49:39,146 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:51:17,777 WARN L286 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 38 DAG size of output: 39 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-23 23:51:30,716 WARN L286 SmtUtils]: Spent 5.27s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 23:51:39,730 WARN L286 SmtUtils]: Spent 5.80s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 23:51:48,682 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 23:51:57,206 WARN L286 SmtUtils]: Spent 8.42s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 23:52:16,443 WARN L286 SmtUtils]: Spent 7.65s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-23 23:53:03,384 WARN L286 SmtUtils]: Spent 30.40s on a formula simplification. DAG size of input: 58 DAG size of output: 56 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-23 23:53:27,583 WARN L286 SmtUtils]: Spent 11.38s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-23 23:53:46,783 WARN L286 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 25 DAG size of output: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 23:54:23,407 WARN L286 SmtUtils]: Spent 35.22s on a formula simplification. DAG size of input: 57 DAG size of output: 52 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-23 23:54:34,202 WARN L286 SmtUtils]: Spent 9.13s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 23:54:42,215 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 23:54:48,262 WARN L286 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 26 DAG size of output: 1 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-23 23:54:59,900 WARN L286 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 23:55:19,576 WARN L286 SmtUtils]: Spent 8.87s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 23:55:54,523 WARN L286 SmtUtils]: Spent 19.59s on a formula simplification. DAG size of input: 56 DAG size of output: 1 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-23 23:56:46,854 WARN L286 SmtUtils]: Spent 52.33s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-23 23:57:27,172 WARN L286 SmtUtils]: Spent 40.31s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-23 23:57:40,151 WARN L286 SmtUtils]: Spent 8.88s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-23 23:57:46,968 WARN L286 SmtUtils]: Spent 6.81s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-23 23:58:01,871 WARN L286 SmtUtils]: Spent 6.86s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 23:58:17,720 WARN L286 SmtUtils]: Spent 10.81s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-23 23:58:24,413 WARN L286 SmtUtils]: Spent 5.35s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-23 23:59:37,689 WARN L286 SmtUtils]: Spent 1.14m on a formula simplification. DAG size of input: 41 DAG size of output: 39 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-23 23:59:45,084 WARN L286 SmtUtils]: Spent 7.39s on a formula simplification. DAG size of input: 26 DAG size of output: 1 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-23 23:59:55,937 WARN L286 SmtUtils]: Spent 10.48s on a formula simplification. DAG size of input: 44 DAG size of output: 41 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-24 00:00:17,991 WARN L286 SmtUtils]: Spent 15.13s on a formula simplification. DAG size of input: 60 DAG size of output: 52 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-24 00:00:26,498 WARN L286 SmtUtils]: Spent 5.16s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 00:00:33,096 WARN L286 SmtUtils]: Spent 6.60s on a formula simplification. DAG size of input: 26 DAG size of output: 1 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-24 00:01:17,806 WARN L286 SmtUtils]: Spent 34.74s on a formula simplification. DAG size of input: 62 DAG size of output: 57 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-24 00:01:31,814 WARN L286 SmtUtils]: Spent 14.00s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-24 00:01:41,934 WARN L286 SmtUtils]: Spent 5.99s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-24 00:02:36,191 WARN L286 SmtUtils]: Spent 43.06s on a formula simplification. DAG size of input: 61 DAG size of output: 58 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne) [2024-11-24 00:02:47,514 WARN L286 SmtUtils]: Spent 11.32s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 188] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne)