./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/aim-100-2-0-unsat-1.c --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_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/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_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/aim-100-2-0-unsat-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/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_ebedd289-bd51-4178-a919-74bf4c94c823/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 789f9022e0356e4a739037a0c2015b201291f4e47288de5fc5a9fb72d6c0a5a8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:35:47,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:35:47,684 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:35:47,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:35:47,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:35:47,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:35:47,715 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:35:47,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:35:47,716 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:35:47,716 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:35:47,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:35:47,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:35:47,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:35:47,717 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:35:47,717 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:35:47,717 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:35:47,718 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:35:47,718 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:35:47,718 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:35:47,718 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:35:47,718 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:35:47,718 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:35:47,719 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:35:47,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:35:47,719 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:35:47,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:35:47,719 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:35:47,719 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:35:47,719 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:35:47,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:35:47,720 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:35:47,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:35:47,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:35:47,720 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:35:47,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:35:47,721 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:35:47,721 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:35:47,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:35:47,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:35:47,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:35:47,721 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:35:47,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:35:47,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:35:47,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:35:47,722 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:35:47,722 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:35:47,722 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:35:47,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:35:47,722 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_ebedd289-bd51-4178-a919-74bf4c94c823/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 -> 789f9022e0356e4a739037a0c2015b201291f4e47288de5fc5a9fb72d6c0a5a8 [2024-11-24 00:35:48,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:35:48,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:35:48,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:35:48,051 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:35:48,051 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:35:48,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/xcsp/aim-100-2-0-unsat-1.c [2024-11-24 00:35:51,046 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/data/4b3c8c91c/d2cae865235642d2b23084cb98cb5867/FLAG871c349b3 [2024-11-24 00:35:51,397 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:35:51,398 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/sv-benchmarks/c/xcsp/aim-100-2-0-unsat-1.c [2024-11-24 00:35:51,414 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/data/4b3c8c91c/d2cae865235642d2b23084cb98cb5867/FLAG871c349b3 [2024-11-24 00:35:51,444 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/data/4b3c8c91c/d2cae865235642d2b23084cb98cb5867 [2024-11-24 00:35:51,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:35:51,449 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:35:51,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:35:51,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:35:51,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:35:51,460 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:35:51" (1/1) ... [2024-11-24 00:35:51,463 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67cfb7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:35:51, skipping insertion in model container [2024-11-24 00:35:51,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:35:51" (1/1) ... [2024-11-24 00:35:51,519 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:35:52,073 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_ebedd289-bd51-4178-a919-74bf4c94c823/sv-benchmarks/c/xcsp/aim-100-2-0-unsat-1.c[21331,21344] [2024-11-24 00:35:52,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:35:52,107 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:35:52,258 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_ebedd289-bd51-4178-a919-74bf4c94c823/sv-benchmarks/c/xcsp/aim-100-2-0-unsat-1.c[21331,21344] [2024-11-24 00:35:52,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:35:52,294 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:35:52,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:35:52 WrapperNode [2024-11-24 00:35:52,295 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:35:52,296 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:35:52,296 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:35:52,296 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:35:52,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:35:52" (1/1) ... [2024-11-24 00:35:52,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:35:52" (1/1) ... [2024-11-24 00:35:52,797 INFO L138 Inliner]: procedures = 13, calls = 403, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 4144 [2024-11-24 00:35:52,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:35:52,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:35:52,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:35:52,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:35:52,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:35:52" (1/1) ... [2024-11-24 00:35:52,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:35:52" (1/1) ... [2024-11-24 00:35:52,879 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:35:52" (1/1) ... [2024-11-24 00:35:52,993 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]. [2024-11-24 00:35:52,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:35:52" (1/1) ... [2024-11-24 00:35:52,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:35:52" (1/1) ... [2024-11-24 00:35:53,177 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:35:52" (1/1) ... [2024-11-24 00:35:53,203 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:35:52" (1/1) ... [2024-11-24 00:35:53,247 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:35:52" (1/1) ... [2024-11-24 00:35:53,306 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:35:52" (1/1) ... [2024-11-24 00:35:53,323 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:35:52" (1/1) ... [2024-11-24 00:35:53,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:35:53,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:35:53,367 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:35:53,367 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:35:53,368 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:35:52" (1/1) ... [2024-11-24 00:35:53,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:35:53,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:35:53,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:35:53,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:35:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:35:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:35:53,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:35:53,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:35:53,444 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-24 00:35:53,445 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-24 00:35:53,895 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:35:53,897 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:36:01,078 INFO L? ?]: Removed 929 outVars from TransFormulas that were not future-live. [2024-11-24 00:36:01,078 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:36:01,150 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:36:01,154 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 00:36:01,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:36:01 BoogieIcfgContainer [2024-11-24 00:36:01,155 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:36:01,157 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:36:01,159 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:36:01,166 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:36:01,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:35:51" (1/3) ... [2024-11-24 00:36:01,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffe1027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:36:01, skipping insertion in model container [2024-11-24 00:36:01,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:35:52" (2/3) ... [2024-11-24 00:36:01,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffe1027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:36:01, skipping insertion in model container [2024-11-24 00:36:01,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:36:01" (3/3) ... [2024-11-24 00:36:01,169 INFO L128 eAbstractionObserver]: Analyzing ICFG aim-100-2-0-unsat-1.c [2024-11-24 00:36:01,189 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:36:01,191 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aim-100-2-0-unsat-1.c that has 2 procedures, 1915 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-24 00:36:01,350 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:36:01,367 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;@687af48f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:36:01,367 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:36:01,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 1915 states, 1516 states have (on average 1.5343007915567282) internal successors, (2326), 1517 states have internal predecessors, (2326), 396 states have call successors, (396), 1 states have call predecessors, (396), 1 states have return successors, (396), 396 states have call predecessors, (396), 396 states have call successors, (396) [2024-11-24 00:36:01,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2684 [2024-11-24 00:36:01,631 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:01,633 INFO L218 NwaCegarLoop]: trace histogram [396, 396, 396, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:36:01,634 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:36:01,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:01,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1390302114, now seen corresponding path program 1 times [2024-11-24 00:36:01,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:01,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040699549] [2024-11-24 00:36:01,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:01,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 828 proven. 6192 refuted. 0 times theorem prover too weak. 305820 trivial. 0 not checked. [2024-11-24 00:36:39,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:36:39,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040699549] [2024-11-24 00:36:39,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040699549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:36:39,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196029806] [2024-11-24 00:36:39,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:39,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:36:39,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:36:39,278 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:36:39,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:36:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:41,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 5198 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-24 00:36:41,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:37:01,079 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 23912 proven. 6456 refuted. 0 times theorem prover too weak. 282472 trivial. 0 not checked. [2024-11-24 00:37:01,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:37:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 2520 proven. 6792 refuted. 0 times theorem prover too weak. 303528 trivial. 0 not checked. [2024-11-24 00:37:23,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196029806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:37:23,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:37:23,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 36 [2024-11-24 00:37:23,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365527219] [2024-11-24 00:37:23,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:37:23,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-24 00:37:23,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:37:23,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-24 00:37:23,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1034, Unknown=0, NotChecked=0, Total=1260 [2024-11-24 00:37:24,006 INFO L87 Difference]: Start difference. First operand has 1915 states, 1516 states have (on average 1.5343007915567282) internal successors, (2326), 1517 states have internal predecessors, (2326), 396 states have call successors, (396), 1 states have call predecessors, (396), 1 states have return successors, (396), 396 states have call predecessors, (396), 396 states have call successors, (396) Second operand has 36 states, 25 states have (on average 76.88) internal successors, (1922), 26 states have internal predecessors, (1922), 32 states have call successors, (1047), 2 states have call predecessors, (1047), 3 states have return successors, (1049), 31 states have call predecessors, (1049), 32 states have call successors, (1049) [2024-11-24 00:37:51,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:37:51,795 INFO L93 Difference]: Finished difference Result 23897 states and 41790 transitions. [2024-11-24 00:37:51,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-24 00:37:51,801 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 25 states have (on average 76.88) internal successors, (1922), 26 states have internal predecessors, (1922), 32 states have call successors, (1047), 2 states have call predecessors, (1047), 3 states have return successors, (1049), 31 states have call predecessors, (1049), 32 states have call successors, (1049) Word has length 2683 [2024-11-24 00:37:51,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:37:51,958 INFO L225 Difference]: With dead ends: 23897 [2024-11-24 00:37:51,958 INFO L226 Difference]: Without dead ends: 21985 [2024-11-24 00:37:51,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5437 GetRequests, 5356 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1938, Invalid=4542, Unknown=0, NotChecked=0, Total=6480 [2024-11-24 00:37:51,999 INFO L435 NwaCegarLoop]: 8357 mSDtfsCounter, 64083 mSDsluCounter, 73690 mSDsCounter, 0 mSdLazyCounter, 14555 mSolverCounterSat, 4593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64097 SdHoareTripleChecker+Valid, 82047 SdHoareTripleChecker+Invalid, 19148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 4593 IncrementalHoareTripleChecker+Valid, 14555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:37:52,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64097 Valid, 82047 Invalid, 19148 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [4593 Valid, 14555 Invalid, 0 Unknown, 0 Unchecked, 18.5s Time] [2024-11-24 00:37:52,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21985 states. [2024-11-24 00:37:54,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21985 to 14860. [2024-11-24 00:37:54,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14860 states, 12860 states have (on average 1.567573872472784) internal successors, (20159), 12860 states have internal predecessors, (20159), 1998 states have call successors, (1998), 1 states have call predecessors, (1998), 1 states have return successors, (1998), 1998 states have call predecessors, (1998), 1998 states have call successors, (1998) [2024-11-24 00:37:54,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14860 states to 14860 states and 24155 transitions. [2024-11-24 00:37:54,468 INFO L78 Accepts]: Start accepts. Automaton has 14860 states and 24155 transitions. Word has length 2683 [2024-11-24 00:37:54,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:37:54,475 INFO L471 AbstractCegarLoop]: Abstraction has 14860 states and 24155 transitions. [2024-11-24 00:37:54,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 25 states have (on average 76.88) internal successors, (1922), 26 states have internal predecessors, (1922), 32 states have call successors, (1047), 2 states have call predecessors, (1047), 3 states have return successors, (1049), 31 states have call predecessors, (1049), 32 states have call successors, (1049) [2024-11-24 00:37:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 14860 states and 24155 transitions. [2024-11-24 00:37:54,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2686 [2024-11-24 00:37:54,848 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:37:54,850 INFO L218 NwaCegarLoop]: trace histogram [396, 396, 396, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:37:54,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:37:55,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:37:55,055 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:37:55,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:37:55,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1272369276, now seen corresponding path program 1 times [2024-11-24 00:37:55,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:37:55,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270234211] [2024-11-24 00:37:55,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:37:55,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:37:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:38:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 648 proven. 1716 refuted. 0 times theorem prover too weak. 310476 trivial. 0 not checked. [2024-11-24 00:38:07,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:38:07,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270234211] [2024-11-24 00:38:07,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270234211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:38:07,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356067274] [2024-11-24 00:38:07,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:38:07,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:38:07,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:38:07,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:38:07,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:38:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:38:08,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 5204 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-24 00:38:08,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:38:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 40500 proven. 1554 refuted. 0 times theorem prover too weak. 270786 trivial. 0 not checked. [2024-11-24 00:38:11,285 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:38:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 648 proven. 1716 refuted. 0 times theorem prover too weak. 310476 trivial. 0 not checked. [2024-11-24 00:38:15,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356067274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:38:15,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:38:15,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-24 00:38:15,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550079840] [2024-11-24 00:38:15,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:38:15,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:38:15,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:38:15,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:38:15,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:38:15,358 INFO L87 Difference]: Start difference. First operand 14860 states and 24155 transitions. Second operand has 12 states, 11 states have (on average 65.45454545454545) internal successors, (720), 11 states have internal predecessors, (720), 5 states have call successors, (423), 2 states have call predecessors, (423), 3 states have return successors, (423), 5 states have call predecessors, (423), 5 states have call successors, (423) [2024-11-24 00:38:22,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:38:22,031 INFO L93 Difference]: Finished difference Result 43941 states and 71420 transitions. [2024-11-24 00:38:22,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:38:22,033 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 65.45454545454545) internal successors, (720), 11 states have internal predecessors, (720), 5 states have call successors, (423), 2 states have call predecessors, (423), 3 states have return successors, (423), 5 states have call predecessors, (423), 5 states have call successors, (423) Word has length 2685 [2024-11-24 00:38:22,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:38:22,161 INFO L225 Difference]: With dead ends: 43941 [2024-11-24 00:38:22,162 INFO L226 Difference]: Without dead ends: 31089 [2024-11-24 00:38:22,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5384 GetRequests, 5368 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:38:22,199 INFO L435 NwaCegarLoop]: 4966 mSDtfsCounter, 7140 mSDsluCounter, 18005 mSDsCounter, 0 mSdLazyCounter, 4423 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7497 SdHoareTripleChecker+Valid, 22971 SdHoareTripleChecker+Invalid, 4439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:38:22,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7497 Valid, 22971 Invalid, 4439 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 4423 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-24 00:38:22,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31089 states. [2024-11-24 00:38:25,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31089 to 30697. [2024-11-24 00:38:25,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30697 states, 26732 states have (on average 1.5681206045189287) internal successors, (41919), 26732 states have internal predecessors, (41919), 3963 states have call successors, (3963), 1 states have call predecessors, (3963), 1 states have return successors, (3963), 3963 states have call predecessors, (3963), 3963 states have call successors, (3963) [2024-11-24 00:38:25,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30697 states to 30697 states and 49845 transitions. [2024-11-24 00:38:25,693 INFO L78 Accepts]: Start accepts. Automaton has 30697 states and 49845 transitions. Word has length 2685 [2024-11-24 00:38:25,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:38:25,700 INFO L471 AbstractCegarLoop]: Abstraction has 30697 states and 49845 transitions. [2024-11-24 00:38:25,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 65.45454545454545) internal successors, (720), 11 states have internal predecessors, (720), 5 states have call successors, (423), 2 states have call predecessors, (423), 3 states have return successors, (423), 5 states have call predecessors, (423), 5 states have call successors, (423) [2024-11-24 00:38:25,704 INFO L276 IsEmpty]: Start isEmpty. Operand 30697 states and 49845 transitions. [2024-11-24 00:38:25,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2686 [2024-11-24 00:38:25,872 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:38:25,873 INFO L218 NwaCegarLoop]: trace histogram [396, 396, 396, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:38:25,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:38:26,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:38:26,074 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:38:26,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:38:26,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1720708600, now seen corresponding path program 1 times [2024-11-24 00:38:26,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:38:26,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667442416] [2024-11-24 00:38:26,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:38:26,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:38:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:38:37,662 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 384 proven. 1980 refuted. 0 times theorem prover too weak. 310476 trivial. 0 not checked. [2024-11-24 00:38:37,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:38:37,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667442416] [2024-11-24 00:38:37,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667442416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:38:37,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814682679] [2024-11-24 00:38:37,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:38:37,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:38:37,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:38:37,665 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:38:37,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:38:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:38:38,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 5204 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-24 00:38:38,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:38:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 149456 proven. 1056 refuted. 0 times theorem prover too weak. 162328 trivial. 0 not checked. [2024-11-24 00:38:40,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:38:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 384 proven. 1980 refuted. 0 times theorem prover too weak. 310476 trivial. 0 not checked. [2024-11-24 00:38:42,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814682679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:38:42,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:38:42,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-24 00:38:42,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335670878] [2024-11-24 00:38:42,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:38:42,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:38:42,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:38:42,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:38:42,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:38:42,948 INFO L87 Difference]: Start difference. First operand 30697 states and 49845 transitions. Second operand has 12 states, 11 states have (on average 65.63636363636364) internal successors, (722), 11 states have internal predecessors, (722), 6 states have call successors, (551), 2 states have call predecessors, (551), 3 states have return successors, (551), 6 states have call predecessors, (551), 6 states have call successors, (551) [2024-11-24 00:38:48,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:38:48,462 INFO L93 Difference]: Finished difference Result 61480 states and 99870 transitions. [2024-11-24 00:38:48,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:38:48,464 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 65.63636363636364) internal successors, (722), 11 states have internal predecessors, (722), 6 states have call successors, (551), 2 states have call predecessors, (551), 3 states have return successors, (551), 6 states have call predecessors, (551), 6 states have call successors, (551) Word has length 2685 [2024-11-24 00:38:48,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:38:48,662 INFO L225 Difference]: With dead ends: 61480 [2024-11-24 00:38:48,662 INFO L226 Difference]: Without dead ends: 49086 [2024-11-24 00:38:48,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5382 GetRequests, 5367 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:38:48,703 INFO L435 NwaCegarLoop]: 4344 mSDtfsCounter, 7221 mSDsluCounter, 18527 mSDsCounter, 0 mSdLazyCounter, 4296 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7592 SdHoareTripleChecker+Valid, 22871 SdHoareTripleChecker+Invalid, 4539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 4296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:38:48,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7592 Valid, 22871 Invalid, 4539 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [243 Valid, 4296 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-24 00:38:48,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49086 states. [2024-11-24 00:38:53,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49086 to 42202. [2024-11-24 00:38:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42202 states, 36802 states have (on average 1.5686375740448888) internal successors, (57729), 36802 states have internal predecessors, (57729), 5398 states have call successors, (5398), 1 states have call predecessors, (5398), 1 states have return successors, (5398), 5398 states have call predecessors, (5398), 5398 states have call successors, (5398) [2024-11-24 00:38:53,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42202 states to 42202 states and 68525 transitions. [2024-11-24 00:38:53,383 INFO L78 Accepts]: Start accepts. Automaton has 42202 states and 68525 transitions. Word has length 2685 [2024-11-24 00:38:53,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:38:53,386 INFO L471 AbstractCegarLoop]: Abstraction has 42202 states and 68525 transitions. [2024-11-24 00:38:53,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 65.63636363636364) internal successors, (722), 11 states have internal predecessors, (722), 6 states have call successors, (551), 2 states have call predecessors, (551), 3 states have return successors, (551), 6 states have call predecessors, (551), 6 states have call successors, (551) [2024-11-24 00:38:53,387 INFO L276 IsEmpty]: Start isEmpty. Operand 42202 states and 68525 transitions. [2024-11-24 00:38:53,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2686 [2024-11-24 00:38:53,612 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:38:53,614 INFO L218 NwaCegarLoop]: trace histogram [396, 396, 396, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:38:53,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:38:53,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:38:53,815 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:38:53,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:38:53,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1900914730, now seen corresponding path program 1 times [2024-11-24 00:38:53,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:38:53,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718437537] [2024-11-24 00:38:53,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:38:53,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:38:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 516 proven. 4188 refuted. 0 times theorem prover too weak. 308136 trivial. 0 not checked. [2024-11-24 00:39:11,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:39:11,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718437537] [2024-11-24 00:39:11,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718437537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:39:11,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414008360] [2024-11-24 00:39:11,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:11,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:11,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:39:11,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:39:11,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:39:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:39:12,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 5204 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-24 00:39:12,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:39:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 106256 proven. 3168 refuted. 0 times theorem prover too weak. 203416 trivial. 0 not checked. [2024-11-24 00:39:17,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:39:24,934 INFO L134 CoverageAnalysis]: Checked inductivity of 312840 backedges. 516 proven. 4188 refuted. 0 times theorem prover too weak. 308136 trivial. 0 not checked. [2024-11-24 00:39:24,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414008360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:39:24,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:39:24,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2024-11-24 00:39:24,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932622582] [2024-11-24 00:39:24,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:39:24,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 00:39:24,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:39:24,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 00:39:24,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:39:24,941 INFO L87 Difference]: Start difference. First operand 42202 states and 68525 transitions. Second operand has 16 states, 13 states have (on average 83.0) internal successors, (1079), 13 states have internal predecessors, (1079), 12 states have call successors, (710), 2 states have call predecessors, (710), 3 states have return successors, (711), 12 states have call predecessors, (711), 12 states have call successors, (711) [2024-11-24 00:39:32,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:39:32,188 INFO L93 Difference]: Finished difference Result 135861 states and 220872 transitions. [2024-11-24 00:39:32,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:39:32,190 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 83.0) internal successors, (1079), 13 states have internal predecessors, (1079), 12 states have call successors, (710), 2 states have call predecessors, (710), 3 states have return successors, (711), 12 states have call predecessors, (711), 12 states have call successors, (711) Word has length 2685 [2024-11-24 00:39:32,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:39:32,762 INFO L225 Difference]: With dead ends: 135861 [2024-11-24 00:39:32,763 INFO L226 Difference]: Without dead ends: 97133 [2024-11-24 00:39:32,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5390 GetRequests, 5369 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:39:32,844 INFO L435 NwaCegarLoop]: 4121 mSDtfsCounter, 11149 mSDsluCounter, 17528 mSDsCounter, 0 mSdLazyCounter, 3696 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11429 SdHoareTripleChecker+Valid, 21649 SdHoareTripleChecker+Invalid, 4162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 3696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:39:32,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11429 Valid, 21649 Invalid, 4162 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [466 Valid, 3696 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-24 00:39:32,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97133 states. [2024-11-24 00:39:42,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97133 to 87380. [2024-11-24 00:39:42,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87380 states, 76352 states have (on average 1.568171102263202) internal successors, (119733), 76352 states have internal predecessors, (119733), 11026 states have call successors, (11026), 1 states have call predecessors, (11026), 1 states have return successors, (11026), 11026 states have call predecessors, (11026), 11026 states have call successors, (11026) [2024-11-24 00:39:42,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87380 states to 87380 states and 141785 transitions. [2024-11-24 00:39:42,422 INFO L78 Accepts]: Start accepts. Automaton has 87380 states and 141785 transitions. Word has length 2685 [2024-11-24 00:39:42,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:39:42,426 INFO L471 AbstractCegarLoop]: Abstraction has 87380 states and 141785 transitions. [2024-11-24 00:39:42,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 83.0) internal successors, (1079), 13 states have internal predecessors, (1079), 12 states have call successors, (710), 2 states have call predecessors, (710), 3 states have return successors, (711), 12 states have call predecessors, (711), 12 states have call successors, (711) [2024-11-24 00:39:42,427 INFO L276 IsEmpty]: Start isEmpty. Operand 87380 states and 141785 transitions. [2024-11-24 00:39:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2687 [2024-11-24 00:39:42,704 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:39:42,705 INFO L218 NwaCegarLoop]: trace histogram [396, 396, 396, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:39:42,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:39:42,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebedd289-bd51-4178-a919-74bf4c94c823/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:39:42,906 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:39:42,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:39:42,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2090678140, now seen corresponding path program 1 times [2024-11-24 00:39:42,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:39:42,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651543260] [2024-11-24 00:39:42,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:39:42,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:39:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat