./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-92.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_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/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_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-92.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/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_df41339e-f0ed-4026-8a86-c179bb71a920/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 d7c6ee6eb0f585efaab30d46a49b7995a5952ad7cab5794b55d5ffb7d0a6deb0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:25:28,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:25:28,229 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:25:28,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:25:28,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:25:28,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:25:28,274 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:25:28,275 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:25:28,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:25:28,275 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:25:28,275 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:25:28,275 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:25:28,276 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:25:28,276 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:25:28,276 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:25:28,276 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:25:28,276 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:25:28,276 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:25:28,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:25:28,277 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:25:28,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:25:28,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:25:28,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:25:28,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:25:28,277 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:25:28,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:25:28,277 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:25:28,277 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:25:28,278 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:25:28,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:25:28,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:25:28,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:25:28,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:25:28,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:25:28,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:25:28,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:25:28,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:25:28,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:25:28,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:25:28,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:25:28,279 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:25:28,279 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:25:28,279 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:25:28,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:25:28,279 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:25:28,279 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:25:28,279 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:25:28,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:25:28,280 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_df41339e-f0ed-4026-8a86-c179bb71a920/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 -> d7c6ee6eb0f585efaab30d46a49b7995a5952ad7cab5794b55d5ffb7d0a6deb0 [2024-11-23 18:25:28,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:25:28,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:25:28,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:25:28,590 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:25:28,590 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:25:28,591 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-92.i [2024-11-23 18:25:31,576 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/data/33f1f569a/98e58104b8bc47fd916b51ae487b8b4c/FLAG3e3a2676e [2024-11-23 18:25:32,011 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:25:32,012 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-92.i [2024-11-23 18:25:32,028 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/data/33f1f569a/98e58104b8bc47fd916b51ae487b8b4c/FLAG3e3a2676e [2024-11-23 18:25:32,146 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/data/33f1f569a/98e58104b8bc47fd916b51ae487b8b4c [2024-11-23 18:25:32,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:25:32,150 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:25:32,151 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:25:32,151 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:25:32,156 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:25:32,157 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:25:32" (1/1) ... [2024-11-23 18:25:32,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ff07ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:32, skipping insertion in model container [2024-11-23 18:25:32,160 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:25:32" (1/1) ... [2024-11-23 18:25:32,197 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:25:32,382 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_df41339e-f0ed-4026-8a86-c179bb71a920/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-92.i[916,929] [2024-11-23 18:25:32,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:25:32,583 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:25:32,596 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_df41339e-f0ed-4026-8a86-c179bb71a920/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-92.i[916,929] [2024-11-23 18:25:32,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:25:32,750 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:25:32,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:32 WrapperNode [2024-11-23 18:25:32,751 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:25:32,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:25:32,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:25:32,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:25:32,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:32" (1/1) ... [2024-11-23 18:25:32,783 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:32" (1/1) ... [2024-11-23 18:25:32,897 INFO L138 Inliner]: procedures = 26, calls = 71, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 504 [2024-11-23 18:25:32,897 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:25:32,898 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:25:32,899 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:25:32,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:25:32,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:32" (1/1) ... [2024-11-23 18:25:32,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:32" (1/1) ... [2024-11-23 18:25:32,923 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:32" (1/1) ... [2024-11-23 18:25:32,966 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 18:25:32,966 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:32" (1/1) ... [2024-11-23 18:25:32,966 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:32" (1/1) ... [2024-11-23 18:25:33,005 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:32" (1/1) ... [2024-11-23 18:25:33,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:32" (1/1) ... [2024-11-23 18:25:33,018 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:32" (1/1) ... [2024-11-23 18:25:33,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:32" (1/1) ... [2024-11-23 18:25:33,038 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:32" (1/1) ... [2024-11-23 18:25:33,056 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:25:33,057 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:25:33,057 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:25:33,057 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:25:33,058 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:32" (1/1) ... [2024-11-23 18:25:33,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:25:33,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:25:33,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:25:33,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:25:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:25:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 18:25:33,130 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 18:25:33,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:25:33,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:25:33,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:25:33,268 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:25:33,270 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:25:34,475 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-11-23 18:25:34,475 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:25:34,498 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:25:34,498 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 18:25:34,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:25:34 BoogieIcfgContainer [2024-11-23 18:25:34,499 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:25:34,501 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:25:34,501 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:25:34,526 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:25:34,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:25:32" (1/3) ... [2024-11-23 18:25:34,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7689c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:25:34, skipping insertion in model container [2024-11-23 18:25:34,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:25:32" (2/3) ... [2024-11-23 18:25:34,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7689c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:25:34, skipping insertion in model container [2024-11-23 18:25:34,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:25:34" (3/3) ... [2024-11-23 18:25:34,529 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-92.i [2024-11-23 18:25:34,544 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:25:34,547 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-92.i that has 2 procedures, 212 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 18:25:34,629 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:25:34,646 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;@1f1c0d62, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:25:34,647 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:25:34,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 151 states have (on average 1.576158940397351) internal successors, (238), 152 states have internal predecessors, (238), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-23 18:25:34,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-11-23 18:25:34,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:25:34,679 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:34,680 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:25:34,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:25:34,688 INFO L85 PathProgramCache]: Analyzing trace with hash 762517885, now seen corresponding path program 1 times [2024-11-23 18:25:34,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:25:34,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781277446] [2024-11-23 18:25:34,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:34,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:25:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2024-11-23 18:25:35,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:25:35,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781277446] [2024-11-23 18:25:35,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781277446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:25:35,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551749791] [2024-11-23 18:25:35,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:35,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:25:35,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:25:35,454 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:25:35,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:25:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:35,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 18:25:35,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:25:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 6498 trivial. 0 not checked. [2024-11-23 18:25:35,983 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:25:35,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551749791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:25:35,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:25:35,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 18:25:35,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732480487] [2024-11-23 18:25:35,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:25:35,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:25:35,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:25:36,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:25:36,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:25:36,022 INFO L87 Difference]: Start difference. First operand has 212 states, 151 states have (on average 1.576158940397351) internal successors, (238), 152 states have internal predecessors, (238), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 2 states have call successors, (58) [2024-11-23 18:25:36,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:25:36,090 INFO L93 Difference]: Finished difference Result 417 states and 760 transitions. [2024-11-23 18:25:36,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:25:36,093 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 2 states have call successors, (58) Word has length 375 [2024-11-23 18:25:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:25:36,108 INFO L225 Difference]: With dead ends: 417 [2024-11-23 18:25:36,108 INFO L226 Difference]: Without dead ends: 208 [2024-11-23 18:25:36,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 376 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 18:25:36,123 INFO L435 NwaCegarLoop]: 347 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, 347 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 18:25:36,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:25:36,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-23 18:25:36,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-11-23 18:25:36,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 148 states have (on average 1.5608108108108107) internal successors, (231), 148 states have internal predecessors, (231), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-23 18:25:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 347 transitions. [2024-11-23 18:25:36,214 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 347 transitions. Word has length 375 [2024-11-23 18:25:36,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:25:36,215 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 347 transitions. [2024-11-23 18:25:36,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 2 states have call successors, (58) [2024-11-23 18:25:36,216 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 347 transitions. [2024-11-23 18:25:36,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-11-23 18:25:36,234 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:25:36,235 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:36,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 18:25:36,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 18:25:36,439 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:25:36,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:25:36,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1403999639, now seen corresponding path program 1 times [2024-11-23 18:25:36,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:25:36,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433249323] [2024-11-23 18:25:36,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:36,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:25:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:37,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2024-11-23 18:25:37,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:25:37,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433249323] [2024-11-23 18:25:37,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433249323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:25:37,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:25:37,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:25:37,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758231410] [2024-11-23 18:25:37,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:25:37,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:25:37,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:25:37,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:25:37,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:25:37,012 INFO L87 Difference]: Start difference. First operand 208 states and 347 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:25:37,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:25:37,136 INFO L93 Difference]: Finished difference Result 552 states and 924 transitions. [2024-11-23 18:25:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:25:37,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 375 [2024-11-23 18:25:37,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:25:37,142 INFO L225 Difference]: With dead ends: 552 [2024-11-23 18:25:37,142 INFO L226 Difference]: Without dead ends: 347 [2024-11-23 18:25:37,144 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 18:25:37,145 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 243 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:25:37,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 680 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:25:37,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-23 18:25:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 344. [2024-11-23 18:25:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 253 states have (on average 1.5612648221343874) internal successors, (395), 254 states have internal predecessors, (395), 88 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 87 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-23 18:25:37,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 571 transitions. [2024-11-23 18:25:37,225 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 571 transitions. Word has length 375 [2024-11-23 18:25:37,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:25:37,227 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 571 transitions. [2024-11-23 18:25:37,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:25:37,228 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 571 transitions. [2024-11-23 18:25:37,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-11-23 18:25:37,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:25:37,236 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:37,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:25:37,236 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:25:37,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:25:37,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1341921513, now seen corresponding path program 1 times [2024-11-23 18:25:37,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:25:37,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339716839] [2024-11-23 18:25:37,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:37,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:25:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2024-11-23 18:25:37,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:25:37,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339716839] [2024-11-23 18:25:37,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339716839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:25:37,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:25:37,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:25:37,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837151598] [2024-11-23 18:25:37,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:25:37,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:25:37,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:25:37,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:25:37,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:25:37,730 INFO L87 Difference]: Start difference. First operand 344 states and 571 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:25:37,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:25:37,879 INFO L93 Difference]: Finished difference Result 693 states and 1146 transitions. [2024-11-23 18:25:37,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:25:37,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 375 [2024-11-23 18:25:37,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:25:37,886 INFO L225 Difference]: With dead ends: 693 [2024-11-23 18:25:37,886 INFO L226 Difference]: Without dead ends: 352 [2024-11-23 18:25:37,887 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 18:25:37,888 INFO L435 NwaCegarLoop]: 420 mSDtfsCounter, 221 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:25:37,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 737 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:25:37,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-23 18:25:37,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 270. [2024-11-23 18:25:37,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 209 states have (on average 1.5645933014354068) internal successors, (327), 209 states have internal predecessors, (327), 58 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-23 18:25:37,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 443 transitions. [2024-11-23 18:25:37,930 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 443 transitions. Word has length 375 [2024-11-23 18:25:37,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:25:37,932 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 443 transitions. [2024-11-23 18:25:37,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:25:37,932 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 443 transitions. [2024-11-23 18:25:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-11-23 18:25:37,937 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:25:37,937 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:37,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:25:37,938 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:25:37,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:25:37,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1978975809, now seen corresponding path program 1 times [2024-11-23 18:25:37,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:25:37,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745635140] [2024-11-23 18:25:37,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:37,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:25:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2024-11-23 18:25:38,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:25:38,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745635140] [2024-11-23 18:25:38,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745635140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:25:38,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:25:38,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:25:38,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807855952] [2024-11-23 18:25:38,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:25:38,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:25:38,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:25:38,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:25:38,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:25:38,497 INFO L87 Difference]: Start difference. First operand 270 states and 443 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:25:39,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:25:39,464 INFO L93 Difference]: Finished difference Result 995 states and 1618 transitions. [2024-11-23 18:25:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:25:39,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 375 [2024-11-23 18:25:39,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:25:39,471 INFO L225 Difference]: With dead ends: 995 [2024-11-23 18:25:39,471 INFO L226 Difference]: Without dead ends: 728 [2024-11-23 18:25:39,472 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 18:25:39,473 INFO L435 NwaCegarLoop]: 439 mSDtfsCounter, 610 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 18:25:39,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 893 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 18:25:39,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2024-11-23 18:25:39,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 424. [2024-11-23 18:25:39,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 321 states have (on average 1.5514018691588785) internal successors, (498), 322 states have internal predecessors, (498), 98 states have call successors, (98), 4 states have call predecessors, (98), 4 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-23 18:25:39,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 694 transitions. [2024-11-23 18:25:39,527 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 694 transitions. Word has length 375 [2024-11-23 18:25:39,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:25:39,528 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 694 transitions. [2024-11-23 18:25:39,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:25:39,528 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 694 transitions. [2024-11-23 18:25:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-11-23 18:25:39,531 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:25:39,532 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:39,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 18:25:39,532 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:25:39,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:25:39,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2074572434, now seen corresponding path program 1 times [2024-11-23 18:25:39,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:25:39,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229467159] [2024-11-23 18:25:39,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:39,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:25:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:39,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2024-11-23 18:25:39,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:25:39,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229467159] [2024-11-23 18:25:39,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229467159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:25:39,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:25:39,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 18:25:39,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560589769] [2024-11-23 18:25:39,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:25:39,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 18:25:39,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:25:39,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 18:25:39,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 18:25:39,934 INFO L87 Difference]: Start difference. First operand 424 states and 694 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:25:40,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:25:40,008 INFO L93 Difference]: Finished difference Result 846 states and 1385 transitions. [2024-11-23 18:25:40,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:25:40,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 376 [2024-11-23 18:25:40,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:25:40,015 INFO L225 Difference]: With dead ends: 846 [2024-11-23 18:25:40,015 INFO L226 Difference]: Without dead ends: 425 [2024-11-23 18:25:40,016 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 18:25:40,017 INFO L435 NwaCegarLoop]: 452 mSDtfsCounter, 199 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:25:40,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 785 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:25:40,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-23 18:25:40,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 422. [2024-11-23 18:25:40,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 319 states have (on average 1.54858934169279) internal successors, (494), 320 states have internal predecessors, (494), 98 states have call successors, (98), 4 states have call predecessors, (98), 4 states have return successors, (98), 97 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-23 18:25:40,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 690 transitions. [2024-11-23 18:25:40,076 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 690 transitions. Word has length 376 [2024-11-23 18:25:40,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:25:40,077 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 690 transitions. [2024-11-23 18:25:40,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:25:40,080 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 690 transitions. [2024-11-23 18:25:40,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-11-23 18:25:40,084 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:25:40,085 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:40,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 18:25:40,085 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:25:40,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:25:40,086 INFO L85 PathProgramCache]: Analyzing trace with hash -425080673, now seen corresponding path program 1 times [2024-11-23 18:25:40,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:25:40,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82373525] [2024-11-23 18:25:40,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:40,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:25:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:41,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2024-11-23 18:25:41,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:25:41,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82373525] [2024-11-23 18:25:41,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82373525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:25:41,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:25:41,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 18:25:41,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914543106] [2024-11-23 18:25:41,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:25:41,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 18:25:41,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:25:41,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 18:25:41,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 18:25:41,165 INFO L87 Difference]: Start difference. First operand 422 states and 690 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:25:41,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:25:41,811 INFO L93 Difference]: Finished difference Result 1288 states and 2101 transitions. [2024-11-23 18:25:41,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:25:41,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 376 [2024-11-23 18:25:41,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:25:41,819 INFO L225 Difference]: With dead ends: 1288 [2024-11-23 18:25:41,820 INFO L226 Difference]: Without dead ends: 869 [2024-11-23 18:25:41,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:25:41,824 INFO L435 NwaCegarLoop]: 355 mSDtfsCounter, 389 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 18:25:41,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 1254 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 18:25:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2024-11-23 18:25:41,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 841. [2024-11-23 18:25:41,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 636 states have (on average 1.550314465408805) internal successors, (986), 638 states have internal predecessors, (986), 196 states have call successors, (196), 8 states have call predecessors, (196), 8 states have return successors, (196), 194 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-23 18:25:41,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1378 transitions. [2024-11-23 18:25:41,965 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1378 transitions. Word has length 376 [2024-11-23 18:25:41,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:25:41,967 INFO L471 AbstractCegarLoop]: Abstraction has 841 states and 1378 transitions. [2024-11-23 18:25:41,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:25:41,968 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1378 transitions. [2024-11-23 18:25:41,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-23 18:25:41,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:25:41,973 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:41,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:25:41,974 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:25:41,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:25:41,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1035159793, now seen corresponding path program 1 times [2024-11-23 18:25:41,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:25:41,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373285023] [2024-11-23 18:25:41,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:41,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:25:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:43,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2024-11-23 18:25:43,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:25:43,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373285023] [2024-11-23 18:25:43,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373285023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:25:43,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:25:43,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:25:43,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916779096] [2024-11-23 18:25:43,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:25:43,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:25:43,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:25:43,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:25:43,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:25:43,949 INFO L87 Difference]: Start difference. First operand 841 states and 1378 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:25:44,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:25:44,949 INFO L93 Difference]: Finished difference Result 2051 states and 3359 transitions. [2024-11-23 18:25:44,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:25:44,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 377 [2024-11-23 18:25:44,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:25:44,958 INFO L225 Difference]: With dead ends: 2051 [2024-11-23 18:25:44,959 INFO L226 Difference]: Without dead ends: 1213 [2024-11-23 18:25:44,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:25:44,962 INFO L435 NwaCegarLoop]: 329 mSDtfsCounter, 358 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 18:25:44,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1386 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 18:25:44,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2024-11-23 18:25:45,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1179. [2024-11-23 18:25:45,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 914 states have (on average 1.5634573304157549) internal successors, (1429), 916 states have internal predecessors, (1429), 254 states have call successors, (254), 10 states have call predecessors, (254), 10 states have return successors, (254), 252 states have call predecessors, (254), 254 states have call successors, (254) [2024-11-23 18:25:45,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1937 transitions. [2024-11-23 18:25:45,180 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1937 transitions. Word has length 377 [2024-11-23 18:25:45,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:25:45,181 INFO L471 AbstractCegarLoop]: Abstraction has 1179 states and 1937 transitions. [2024-11-23 18:25:45,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:25:45,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1937 transitions. [2024-11-23 18:25:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-11-23 18:25:45,186 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:25:45,187 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:45,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 18:25:45,187 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:25:45,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:25:45,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2102675660, now seen corresponding path program 1 times [2024-11-23 18:25:45,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:25:45,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668971509] [2024-11-23 18:25:45,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:45,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:25:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:45,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 120 proven. 51 refuted. 0 times theorem prover too weak. 6441 trivial. 0 not checked. [2024-11-23 18:25:45,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:25:45,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668971509] [2024-11-23 18:25:45,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668971509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:25:45,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410647366] [2024-11-23 18:25:45,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:45,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:25:45,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:25:45,827 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:25:45,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 18:25:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:46,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 18:25:46,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:25:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 2857 proven. 51 refuted. 0 times theorem prover too weak. 3704 trivial. 0 not checked. [2024-11-23 18:25:46,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:25:47,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 120 proven. 51 refuted. 0 times theorem prover too weak. 6441 trivial. 0 not checked. [2024-11-23 18:25:47,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410647366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:25:47,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:25:47,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-23 18:25:47,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579573546] [2024-11-23 18:25:47,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:25:47,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 18:25:47,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:25:47,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 18:25:47,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:25:47,070 INFO L87 Difference]: Start difference. First operand 1179 states and 1937 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 3 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) [2024-11-23 18:25:47,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:25:47,731 INFO L93 Difference]: Finished difference Result 1736 states and 2838 transitions. [2024-11-23 18:25:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:25:47,732 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 3 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) Word has length 379 [2024-11-23 18:25:47,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:25:47,739 INFO L225 Difference]: With dead ends: 1736 [2024-11-23 18:25:47,739 INFO L226 Difference]: Without dead ends: 821 [2024-11-23 18:25:47,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 755 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:25:47,744 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 632 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 18:25:47,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 711 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 18:25:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-23 18:25:47,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 809. [2024-11-23 18:25:47,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 625 states have (on average 1.5488) internal successors, (968), 625 states have internal predecessors, (968), 174 states have call successors, (174), 9 states have call predecessors, (174), 9 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-23 18:25:47,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1316 transitions. [2024-11-23 18:25:47,844 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1316 transitions. Word has length 379 [2024-11-23 18:25:47,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:25:47,846 INFO L471 AbstractCegarLoop]: Abstraction has 809 states and 1316 transitions. [2024-11-23 18:25:47,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 3 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) [2024-11-23 18:25:47,846 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1316 transitions. [2024-11-23 18:25:47,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-11-23 18:25:47,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:25:47,850 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:47,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 18:25:48,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:25:48,051 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:25:48,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:25:48,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2037812527, now seen corresponding path program 1 times [2024-11-23 18:25:48,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:25:48,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026764726] [2024-11-23 18:25:48,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:48,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:25:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2024-11-23 18:25:48,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:25:48,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026764726] [2024-11-23 18:25:48,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026764726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:25:48,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:25:48,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:25:48,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108381544] [2024-11-23 18:25:48,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:25:48,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:25:48,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:25:48,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:25:48,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:25:48,534 INFO L87 Difference]: Start difference. First operand 809 states and 1316 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:25:49,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:25:49,885 INFO L93 Difference]: Finished difference Result 3173 states and 5170 transitions. [2024-11-23 18:25:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 18:25:49,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 379 [2024-11-23 18:25:49,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:25:49,902 INFO L225 Difference]: With dead ends: 3173 [2024-11-23 18:25:49,902 INFO L226 Difference]: Without dead ends: 2555 [2024-11-23 18:25:49,905 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 18:25:49,906 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 915 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:25:49,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1467 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 18:25:49,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2024-11-23 18:25:50,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 2513. [2024-11-23 18:25:50,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2513 states, 1963 states have (on average 1.553234844625573) internal successors, (3049), 1963 states have internal predecessors, (3049), 522 states have call successors, (522), 27 states have call predecessors, (522), 27 states have return successors, (522), 522 states have call predecessors, (522), 522 states have call successors, (522) [2024-11-23 18:25:50,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2513 states to 2513 states and 4093 transitions. [2024-11-23 18:25:50,188 INFO L78 Accepts]: Start accepts. Automaton has 2513 states and 4093 transitions. Word has length 379 [2024-11-23 18:25:50,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:25:50,189 INFO L471 AbstractCegarLoop]: Abstraction has 2513 states and 4093 transitions. [2024-11-23 18:25:50,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:25:50,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2513 states and 4093 transitions. [2024-11-23 18:25:50,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2024-11-23 18:25:50,193 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:25:50,193 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:25:50,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 18:25:50,194 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:25:50,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:25:50,195 INFO L85 PathProgramCache]: Analyzing trace with hash -666005229, now seen corresponding path program 1 times [2024-11-23 18:25:50,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:25:50,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074094750] [2024-11-23 18:25:50,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:50,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:25:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 210 proven. 126 refuted. 0 times theorem prover too weak. 6276 trivial. 0 not checked. [2024-11-23 18:25:55,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:25:55,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074094750] [2024-11-23 18:25:55,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074094750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:25:55,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931356012] [2024-11-23 18:25:55,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:25:55,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:25:55,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:25:55,281 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:25:55,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 18:25:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:25:55,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 18:25:55,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:25:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 4223 proven. 138 refuted. 0 times theorem prover too weak. 2251 trivial. 0 not checked. [2024-11-23 18:25:56,618 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:25:57,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 120 proven. 51 refuted. 0 times theorem prover too weak. 6441 trivial. 0 not checked. [2024-11-23 18:25:57,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931356012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 18:25:57,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 18:25:57,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 21 [2024-11-23 18:25:57,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366676321] [2024-11-23 18:25:57,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 18:25:57,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-23 18:25:57,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:25:57,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-23 18:25:57,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-11-23 18:25:57,632 INFO L87 Difference]: Start difference. First operand 2513 states and 4093 transitions. Second operand has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 5 states have call successors, (118), 3 states have call predecessors, (118), 6 states have return successors, (119), 5 states have call predecessors, (119), 5 states have call successors, (119) [2024-11-23 18:26:03,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:26:03,863 INFO L93 Difference]: Finished difference Result 8344 states and 13351 transitions. [2024-11-23 18:26:03,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-23 18:26:03,864 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 5 states have call successors, (118), 3 states have call predecessors, (118), 6 states have return successors, (119), 5 states have call predecessors, (119), 5 states have call successors, (119) Word has length 379 [2024-11-23 18:26:03,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:26:03,902 INFO L225 Difference]: With dead ends: 8344 [2024-11-23 18:26:03,902 INFO L226 Difference]: Without dead ends: 6002 [2024-11-23 18:26:03,911 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1249, Invalid=3721, Unknown=0, NotChecked=0, Total=4970 [2024-11-23 18:26:03,913 INFO L435 NwaCegarLoop]: 391 mSDtfsCounter, 4352 mSDsluCounter, 2049 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 1422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4354 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 4137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1422 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:26:03,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4354 Valid, 2440 Invalid, 4137 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1422 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-23 18:26:03,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2024-11-23 18:26:04,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 2681. [2024-11-23 18:26:04,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2681 states, 2095 states have (on average 1.5121718377088305) internal successors, (3168), 2095 states have internal predecessors, (3168), 522 states have call successors, (522), 63 states have call predecessors, (522), 63 states have return successors, (522), 522 states have call predecessors, (522), 522 states have call successors, (522) [2024-11-23 18:26:04,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2681 states to 2681 states and 4212 transitions. [2024-11-23 18:26:04,418 INFO L78 Accepts]: Start accepts. Automaton has 2681 states and 4212 transitions. Word has length 379 [2024-11-23 18:26:04,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:26:04,420 INFO L471 AbstractCegarLoop]: Abstraction has 2681 states and 4212 transitions. [2024-11-23 18:26:04,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.9523809523809526) internal successors, (167), 21 states have internal predecessors, (167), 5 states have call successors, (118), 3 states have call predecessors, (118), 6 states have return successors, (119), 5 states have call predecessors, (119), 5 states have call successors, (119) [2024-11-23 18:26:04,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2681 states and 4212 transitions. [2024-11-23 18:26:04,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-23 18:26:04,424 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:26:04,424 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:04,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 18:26:04,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 18:26:04,625 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:26:04,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:26:04,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1295002135, now seen corresponding path program 1 times [2024-11-23 18:26:04,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:26:04,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602451672] [2024-11-23 18:26:04,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:26:04,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:26:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:26:04,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2024-11-23 18:26:04,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:26:04,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602451672] [2024-11-23 18:26:04,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602451672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:26:04,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:26:04,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 18:26:04,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592765014] [2024-11-23 18:26:04,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:26:04,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 18:26:04,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:26:04,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 18:26:04,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:26:04,897 INFO L87 Difference]: Start difference. First operand 2681 states and 4212 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:26:05,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:26:05,320 INFO L93 Difference]: Finished difference Result 6788 states and 10798 transitions. [2024-11-23 18:26:05,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 18:26:05,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 381 [2024-11-23 18:26:05,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:26:05,346 INFO L225 Difference]: With dead ends: 6788 [2024-11-23 18:26:05,346 INFO L226 Difference]: Without dead ends: 4544 [2024-11-23 18:26:05,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 18:26:05,355 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 233 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 18:26:05,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1033 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 18:26:05,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4544 states. [2024-11-23 18:26:05,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4544 to 4534. [2024-11-23 18:26:05,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 3763 states have (on average 1.560722827531225) internal successors, (5873), 3771 states have internal predecessors, (5873), 698 states have call successors, (698), 72 states have call predecessors, (698), 72 states have return successors, (698), 690 states have call predecessors, (698), 698 states have call successors, (698) [2024-11-23 18:26:05,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 7269 transitions. [2024-11-23 18:26:05,975 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 7269 transitions. Word has length 381 [2024-11-23 18:26:05,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:26:05,976 INFO L471 AbstractCegarLoop]: Abstraction has 4534 states and 7269 transitions. [2024-11-23 18:26:05,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:26:05,976 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 7269 transitions. [2024-11-23 18:26:05,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-23 18:26:05,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:26:05,980 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:05,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 18:26:05,981 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:26:05,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:26:05,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1954533657, now seen corresponding path program 1 times [2024-11-23 18:26:05,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:26:05,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948268349] [2024-11-23 18:26:05,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:26:05,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:26:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:26:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2024-11-23 18:26:06,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:26:06,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948268349] [2024-11-23 18:26:06,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948268349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:26:06,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:26:06,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 18:26:06,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714923879] [2024-11-23 18:26:06,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:26:06,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 18:26:06,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:26:06,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 18:26:06,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 18:26:06,786 INFO L87 Difference]: Start difference. First operand 4534 states and 7269 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:26:07,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:26:07,898 INFO L93 Difference]: Finished difference Result 8276 states and 13237 transitions. [2024-11-23 18:26:07,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 18:26:07,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 381 [2024-11-23 18:26:07,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:26:07,927 INFO L225 Difference]: With dead ends: 8276 [2024-11-23 18:26:07,927 INFO L226 Difference]: Without dead ends: 4512 [2024-11-23 18:26:07,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:26:07,937 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 827 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:26:07,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1012 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 18:26:07,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2024-11-23 18:26:08,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 4510. [2024-11-23 18:26:08,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 3739 states have (on average 1.5514843541053758) internal successors, (5801), 3747 states have internal predecessors, (5801), 698 states have call successors, (698), 72 states have call predecessors, (698), 72 states have return successors, (698), 690 states have call predecessors, (698), 698 states have call successors, (698) [2024-11-23 18:26:08,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 7197 transitions. [2024-11-23 18:26:08,462 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 7197 transitions. Word has length 381 [2024-11-23 18:26:08,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:26:08,463 INFO L471 AbstractCegarLoop]: Abstraction has 4510 states and 7197 transitions. [2024-11-23 18:26:08,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) [2024-11-23 18:26:08,463 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 7197 transitions. [2024-11-23 18:26:08,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-23 18:26:08,467 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:26:08,467 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:08,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 18:26:08,468 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:26:08,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:26:08,468 INFO L85 PathProgramCache]: Analyzing trace with hash 729497428, now seen corresponding path program 1 times [2024-11-23 18:26:08,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:26:08,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486122796] [2024-11-23 18:26:08,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:26:08,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:26:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 18:26:08,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063094972] [2024-11-23 18:26:08,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:26:08,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:26:08,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:26:08,726 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:26:08,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 18:26:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:26:09,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-23 18:26:09,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:26:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 4559 proven. 126 refuted. 0 times theorem prover too weak. 1927 trivial. 0 not checked. [2024-11-23 18:26:13,362 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:26:15,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:26:15,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486122796] [2024-11-23 18:26:15,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 18:26:15,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063094972] [2024-11-23 18:26:15,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063094972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:26:15,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:26:15,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2024-11-23 18:26:15,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927008564] [2024-11-23 18:26:15,960 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-23 18:26:15,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 18:26:15,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:26:15,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 18:26:15,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2024-11-23 18:26:15,962 INFO L87 Difference]: Start difference. First operand 4510 states and 7197 transitions. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 18 states have internal predecessors, (109), 4 states have call successors, (58), 4 states have call predecessors, (58), 6 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2024-11-23 18:27:43,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-23 18:27:49,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-23 18:28:04,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-23 18:28:31,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-23 18:28:59,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:28:59,720 INFO L93 Difference]: Finished difference Result 15688 states and 25019 transitions. [2024-11-23 18:28:59,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-23 18:28:59,721 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 18 states have internal predecessors, (109), 4 states have call successors, (58), 4 states have call predecessors, (58), 6 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) Word has length 381 [2024-11-23 18:28:59,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:28:59,813 INFO L225 Difference]: With dead ends: 15688 [2024-11-23 18:28:59,814 INFO L226 Difference]: Without dead ends: 13834 [2024-11-23 18:28:59,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2897 ImplicationChecksByTransitivity, 82.5s TimeCoverageRelationStatistics Valid=2182, Invalid=7520, Unknown=0, NotChecked=0, Total=9702 [2024-11-23 18:28:59,824 INFO L435 NwaCegarLoop]: 396 mSDtfsCounter, 3829 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 2718 mSolverCounterSat, 1528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3905 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 4246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1528 IncrementalHoareTripleChecker+Valid, 2718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.6s IncrementalHoareTripleChecker+Time [2024-11-23 18:28:59,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3905 Valid, 2143 Invalid, 4246 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1528 Valid, 2718 Invalid, 0 Unknown, 0 Unchecked, 81.6s Time] [2024-11-23 18:28:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13834 states. [2024-11-23 18:29:01,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13834 to 10724. [2024-11-23 18:29:01,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10724 states, 9069 states have (on average 1.5799977946851913) internal successors, (14329), 9109 states have internal predecessors, (14329), 1522 states have call successors, (1522), 132 states have call predecessors, (1522), 132 states have return successors, (1522), 1482 states have call predecessors, (1522), 1522 states have call successors, (1522) [2024-11-23 18:29:01,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10724 states to 10724 states and 17373 transitions. [2024-11-23 18:29:01,871 INFO L78 Accepts]: Start accepts. Automaton has 10724 states and 17373 transitions. Word has length 381 [2024-11-23 18:29:01,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:29:01,872 INFO L471 AbstractCegarLoop]: Abstraction has 10724 states and 17373 transitions. [2024-11-23 18:29:01,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 18 states have internal predecessors, (109), 4 states have call successors, (58), 4 states have call predecessors, (58), 6 states have return successors, (58), 4 states have call predecessors, (58), 4 states have call successors, (58) [2024-11-23 18:29:01,873 INFO L276 IsEmpty]: Start isEmpty. Operand 10724 states and 17373 transitions. [2024-11-23 18:29:01,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-23 18:29:01,889 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:29:01,889 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:29:01,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 18:29:02,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 18:29:02,093 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:29:02,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:29:02,099 INFO L85 PathProgramCache]: Analyzing trace with hash 748088862, now seen corresponding path program 1 times [2024-11-23 18:29:02,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:29:02,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944799392] [2024-11-23 18:29:02,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:29:02,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:29:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 18:29:03,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528593639] [2024-11-23 18:29:03,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:29:03,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:29:03,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:29:03,069 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:29:03,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 18:29:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:29:03,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 18:29:03,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:29:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3351 proven. 90 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2024-11-23 18:29:07,142 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:29:12,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2024-11-23 18:29:12,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:29:12,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944799392] [2024-11-23 18:29:12,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 18:29:12,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528593639] [2024-11-23 18:29:12,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528593639] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 18:29:12,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:29:12,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 26 [2024-11-23 18:29:12,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490513409] [2024-11-23 18:29:12,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:29:12,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 18:29:12,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:29:12,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 18:29:12,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2024-11-23 18:29:12,774 INFO L87 Difference]: Start difference. First operand 10724 states and 17373 transitions. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 2 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2024-11-23 18:30:22,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:30:22,394 INFO L93 Difference]: Finished difference Result 132826 states and 214744 transitions. [2024-11-23 18:30:22,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-23 18:30:22,395 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 2 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 382 [2024-11-23 18:30:22,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:30:22,962 INFO L225 Difference]: With dead ends: 132826 [2024-11-23 18:30:22,962 INFO L226 Difference]: Without dead ends: 123620 [2024-11-23 18:30:23,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 787 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=1116, Invalid=4434, Unknown=0, NotChecked=0, Total=5550 [2024-11-23 18:30:23,014 INFO L435 NwaCegarLoop]: 325 mSDtfsCounter, 10435 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 4128 mSolverCounterSat, 4039 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10435 SdHoareTripleChecker+Valid, 3512 SdHoareTripleChecker+Invalid, 8167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4039 IncrementalHoareTripleChecker+Valid, 4128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2024-11-23 18:30:23,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10435 Valid, 3512 Invalid, 8167 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4039 Valid, 4128 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time] [2024-11-23 18:30:23,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123620 states. [2024-11-23 18:30:34,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123620 to 40353. [2024-11-23 18:30:34,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40353 states, 33938 states have (on average 1.5817962166303259) internal successors, (53683), 34118 states have internal predecessors, (53683), 5926 states have call successors, (5926), 488 states have call predecessors, (5926), 488 states have return successors, (5926), 5746 states have call predecessors, (5926), 5926 states have call successors, (5926) [2024-11-23 18:30:34,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40353 states to 40353 states and 65535 transitions. [2024-11-23 18:30:34,298 INFO L78 Accepts]: Start accepts. Automaton has 40353 states and 65535 transitions. Word has length 382 [2024-11-23 18:30:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:30:34,300 INFO L471 AbstractCegarLoop]: Abstraction has 40353 states and 65535 transitions. [2024-11-23 18:30:34,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 2 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2024-11-23 18:30:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 40353 states and 65535 transitions. [2024-11-23 18:30:34,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-23 18:30:34,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:30:34,316 INFO L218 NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:30:34,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 18:30:34,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 18:30:34,517 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:30:34,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:30:34,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1451280595, now seen corresponding path program 1 times [2024-11-23 18:30:34,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:30:34,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654636851] [2024-11-23 18:30:34,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:34,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:30:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-23 18:30:34,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14531777] [2024-11-23 18:30:34,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:30:34,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:30:34,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:30:34,835 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:30:34,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df41339e-f0ed-4026-8a86-c179bb71a920/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 18:30:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:30:35,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-23 18:30:35,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:30:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6612 backedges. 3497 proven. 171 refuted. 0 times theorem prover too weak. 2944 trivial. 0 not checked. [2024-11-23 18:30:41,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 18:30:47,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:30:47,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654636851] [2024-11-23 18:30:47,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-23 18:30:47,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14531777] [2024-11-23 18:30:47,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14531777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:30:47,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:30:47,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-11-23 18:30:47,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475980062] [2024-11-23 18:30:47,542 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-23 18:30:47,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 18:30:47,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:30:47,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 18:30:47,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=948, Unknown=0, NotChecked=0, Total=1190 [2024-11-23 18:30:47,544 INFO L87 Difference]: Start difference. First operand 40353 states and 65535 transitions. Second operand has 20 states, 20 states have (on average 5.35) internal successors, (107), 19 states have internal predecessors, (107), 3 states have call successors, (58), 3 states have call predecessors, (58), 5 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2024-11-23 18:30:56,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]