./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB --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 a658ccdf0d0915d51dea10c76d93ada0eecf8bcabd46d64b900dde1c23dedf98 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:26:49,069 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:26:49,155 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:26:49,174 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:26:49,174 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:26:49,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:26:49,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:26:49,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:26:49,228 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:26:49,229 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:26:49,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:26:49,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:26:49,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:26:49,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:26:49,231 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:26:49,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:26:49,231 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:26:49,231 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:26:49,231 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:26:49,231 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:26:49,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:26:49,232 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:26:49,232 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:26:49,232 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:26:49,232 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:26:49,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:26:49,232 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:26:49,232 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:26:49,232 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:26:49,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:26:49,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:26:49,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:26:49,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:26:49,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:26:49,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:26:49,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:26:49,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:26:49,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:26:49,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:26:49,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:26:49,234 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:26:49,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:26:49,235 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:26:49,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:26:49,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:26:49,235 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:26:49,235 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:26:49,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:26:49,236 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_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB 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 -> a658ccdf0d0915d51dea10c76d93ada0eecf8bcabd46d64b900dde1c23dedf98 [2024-11-27 23:26:49,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:26:49,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:26:49,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:26:49,631 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:26:49,632 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:26:49,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label09.c [2024-11-27 23:26:52,969 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/data/eb46c3d89/a3d7bd77306b405a9049830e000affb9/FLAGc4b6c722f [2024-11-27 23:26:53,700 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:26:53,701 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label09.c [2024-11-27 23:26:53,743 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/data/eb46c3d89/a3d7bd77306b405a9049830e000affb9/FLAGc4b6c722f [2024-11-27 23:26:53,770 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/data/eb46c3d89/a3d7bd77306b405a9049830e000affb9 [2024-11-27 23:26:53,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:26:53,775 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:26:53,779 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:26:53,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:26:53,789 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:26:53,792 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:26:53" (1/1) ... [2024-11-27 23:26:53,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c9372e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:53, skipping insertion in model container [2024-11-27 23:26:53,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:26:53" (1/1) ... [2024-11-27 23:26:53,950 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:26:54,398 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_4eea9797-a766-4486-9f87-043af1c3699d/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label09.c[8616,8629] [2024-11-27 23:26:54,493 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_4eea9797-a766-4486-9f87-043af1c3699d/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label09.c[16364,16377] [2024-11-27 23:26:55,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:26:55,647 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:26:55,700 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_4eea9797-a766-4486-9f87-043af1c3699d/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label09.c[8616,8629] [2024-11-27 23:26:55,729 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_4eea9797-a766-4486-9f87-043af1c3699d/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label09.c[16364,16377] [2024-11-27 23:26:56,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:26:56,359 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:26:56,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:56 WrapperNode [2024-11-27 23:26:56,361 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:26:56,362 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:26:56,363 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:26:56,363 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:26:56,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:56" (1/1) ... [2024-11-27 23:26:56,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:56" (1/1) ... [2024-11-27 23:26:56,965 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5037 [2024-11-27 23:26:56,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:26:56,966 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:26:56,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:26:56,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:26:56,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:56" (1/1) ... [2024-11-27 23:26:56,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:56" (1/1) ... [2024-11-27 23:26:57,190 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:56" (1/1) ... [2024-11-27 23:26:57,449 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]. [2024-11-27 23:26:57,450 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:56" (1/1) ... [2024-11-27 23:26:57,450 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:56" (1/1) ... [2024-11-27 23:26:57,610 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:56" (1/1) ... [2024-11-27 23:26:57,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:56" (1/1) ... [2024-11-27 23:26:57,681 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:56" (1/1) ... [2024-11-27 23:26:57,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:56" (1/1) ... [2024-11-27 23:26:57,795 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:56" (1/1) ... [2024-11-27 23:26:57,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:26:57,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:26:57,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:26:57,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:26:57,927 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:56" (1/1) ... [2024-11-27 23:26:57,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:26:57,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:26:57,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:26:58,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:26:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:26:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:26:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:26:58,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:26:58,286 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:26:58,288 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:27:05,876 INFO L? ?]: Removed 737 outVars from TransFormulas that were not future-live. [2024-11-27 23:27:05,877 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:27:05,912 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:27:05,912 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-27 23:27:05,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:27:05 BoogieIcfgContainer [2024-11-27 23:27:05,913 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:27:05,916 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:27:05,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:27:05,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:27:05,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:26:53" (1/3) ... [2024-11-27 23:27:05,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c54919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:27:05, skipping insertion in model container [2024-11-27 23:27:05,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:26:56" (2/3) ... [2024-11-27 23:27:05,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c54919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:27:05, skipping insertion in model container [2024-11-27 23:27:05,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:27:05" (3/3) ... [2024-11-27 23:27:05,929 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label09.c [2024-11-27 23:27:05,954 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:27:05,958 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label09.c that has 1 procedures, 886 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-27 23:27:06,054 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:27:06,070 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;@3c4cb40f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:27:06,070 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-27 23:27:06,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:06,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-27 23:27:06,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:06,092 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:06,092 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:06,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:06,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1782369673, now seen corresponding path program 1 times [2024-11-27 23:27:06,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:06,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110449280] [2024-11-27 23:27:06,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:06,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:06,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:06,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110449280] [2024-11-27 23:27:06,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110449280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:06,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:06,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:27:06,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617666589] [2024-11-27 23:27:06,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:06,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:27:06,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:06,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:27:06,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:27:06,575 INFO L87 Difference]: Start difference. First operand has 886 states, 883 states have (on average 1.9048697621744055) internal successors, (1682), 885 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:06,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:06,734 INFO L93 Difference]: Finished difference Result 1743 states and 3310 transitions. [2024-11-27 23:27:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:27:06,737 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-27 23:27:06,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:06,764 INFO L225 Difference]: With dead ends: 1743 [2024-11-27 23:27:06,764 INFO L226 Difference]: Without dead ends: 820 [2024-11-27 23:27:06,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:27:06,782 INFO L435 NwaCegarLoop]: 1616 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, 1616 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 [2024-11-27 23:27:06,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:06,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2024-11-27 23:27:06,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2024-11-27 23:27:06,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 818 states have (on average 1.8936430317848412) internal successors, (1549), 819 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:06,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1549 transitions. [2024-11-27 23:27:06,926 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1549 transitions. Word has length 23 [2024-11-27 23:27:06,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:06,930 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1549 transitions. [2024-11-27 23:27:06,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:06,931 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1549 transitions. [2024-11-27 23:27:06,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-27 23:27:06,932 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:06,932 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:06,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:27:06,932 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:06,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:06,933 INFO L85 PathProgramCache]: Analyzing trace with hash 194021771, now seen corresponding path program 1 times [2024-11-27 23:27:06,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:06,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416887473] [2024-11-27 23:27:06,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:06,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:07,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:07,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:07,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416887473] [2024-11-27 23:27:07,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416887473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:07,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:07,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:27:07,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446453688] [2024-11-27 23:27:07,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:07,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:27:07,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:07,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:27:07,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:07,306 INFO L87 Difference]: Start difference. First operand 820 states and 1549 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:07,514 INFO L93 Difference]: Finished difference Result 898 states and 1669 transitions. [2024-11-27 23:27:07,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:07,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-27 23:27:07,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:07,521 INFO L225 Difference]: With dead ends: 898 [2024-11-27 23:27:07,522 INFO L226 Difference]: Without dead ends: 857 [2024-11-27 23:27:07,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:07,527 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 57 mSDsluCounter, 4606 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 6151 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:07,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 6151 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:07,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2024-11-27 23:27:07,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 820. [2024-11-27 23:27:07,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 818 states have (on average 1.8655256723716382) internal successors, (1526), 819 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:07,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1526 transitions. [2024-11-27 23:27:07,572 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1526 transitions. Word has length 23 [2024-11-27 23:27:07,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:07,572 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1526 transitions. [2024-11-27 23:27:07,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:07,573 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1526 transitions. [2024-11-27 23:27:07,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-27 23:27:07,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:07,576 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:07,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:27:07,577 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:07,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:07,578 INFO L85 PathProgramCache]: Analyzing trace with hash 651515760, now seen corresponding path program 1 times [2024-11-27 23:27:07,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:07,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742480835] [2024-11-27 23:27:07,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:07,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:07,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:07,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742480835] [2024-11-27 23:27:07,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742480835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:07,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:07,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:27:07,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142847129] [2024-11-27 23:27:07,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:07,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:07,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:07,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:07,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:07,927 INFO L87 Difference]: Start difference. First operand 820 states and 1526 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:08,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:08,256 INFO L93 Difference]: Finished difference Result 1116 states and 1990 transitions. [2024-11-27 23:27:08,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:27:08,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-27 23:27:08,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:08,264 INFO L225 Difference]: With dead ends: 1116 [2024-11-27 23:27:08,264 INFO L226 Difference]: Without dead ends: 1079 [2024-11-27 23:27:08,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:08,268 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 6223 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6223 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:08,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6223 Valid, 2326 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:27:08,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2024-11-27 23:27:08,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 855. [2024-11-27 23:27:08,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 853 states have (on average 1.8534583821805393) internal successors, (1581), 854 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:08,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1581 transitions. [2024-11-27 23:27:08,311 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1581 transitions. Word has length 45 [2024-11-27 23:27:08,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:08,312 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1581 transitions. [2024-11-27 23:27:08,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:08,313 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1581 transitions. [2024-11-27 23:27:08,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-27 23:27:08,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:08,318 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:08,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:27:08,319 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:08,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:08,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1920688320, now seen corresponding path program 1 times [2024-11-27 23:27:08,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:08,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279611479] [2024-11-27 23:27:08,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:08,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:08,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:08,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279611479] [2024-11-27 23:27:08,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279611479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:08,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:08,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:08,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490495571] [2024-11-27 23:27:08,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:08,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:08,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:08,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:08,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:08,546 INFO L87 Difference]: Start difference. First operand 855 states and 1581 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:08,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:08,600 INFO L93 Difference]: Finished difference Result 988 states and 1788 transitions. [2024-11-27 23:27:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:08,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-27 23:27:08,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:08,608 INFO L225 Difference]: With dead ends: 988 [2024-11-27 23:27:08,609 INFO L226 Difference]: Without dead ends: 916 [2024-11-27 23:27:08,609 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 [2024-11-27 23:27:08,610 INFO L435 NwaCegarLoop]: 1524 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:08,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:08,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-27 23:27:08,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2024-11-27 23:27:08,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.832236842105263) internal successors, (1671), 913 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:08,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1671 transitions. [2024-11-27 23:27:08,652 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1671 transitions. Word has length 47 [2024-11-27 23:27:08,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:08,652 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1671 transitions. [2024-11-27 23:27:08,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:08,653 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1671 transitions. [2024-11-27 23:27:08,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-27 23:27:08,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:08,656 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:08,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:27:08,658 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:08,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:08,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1987181832, now seen corresponding path program 1 times [2024-11-27 23:27:08,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:08,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295300187] [2024-11-27 23:27:08,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:08,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:09,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:09,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295300187] [2024-11-27 23:27:09,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295300187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:09,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:09,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:27:09,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238866834] [2024-11-27 23:27:09,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:09,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:09,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:09,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:09,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:09,218 INFO L87 Difference]: Start difference. First operand 914 states and 1671 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:09,538 INFO L93 Difference]: Finished difference Result 1047 states and 1875 transitions. [2024-11-27 23:27:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:09,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-27 23:27:09,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:09,548 INFO L225 Difference]: With dead ends: 1047 [2024-11-27 23:27:09,552 INFO L226 Difference]: Without dead ends: 916 [2024-11-27 23:27:09,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:27:09,555 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 5924 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5924 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:09,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5924 Valid, 1682 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:09,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-27 23:27:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 914. [2024-11-27 23:27:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 912 states have (on average 1.8300438596491229) internal successors, (1669), 913 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1669 transitions. [2024-11-27 23:27:09,619 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1669 transitions. Word has length 47 [2024-11-27 23:27:09,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:09,620 INFO L471 AbstractCegarLoop]: Abstraction has 914 states and 1669 transitions. [2024-11-27 23:27:09,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:09,620 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1669 transitions. [2024-11-27 23:27:09,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-27 23:27:09,622 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:09,622 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:09,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:27:09,622 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:09,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:09,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1058371496, now seen corresponding path program 1 times [2024-11-27 23:27:09,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:09,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099239276] [2024-11-27 23:27:09,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:09,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:09,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:09,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099239276] [2024-11-27 23:27:09,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099239276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:09,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:09,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:27:09,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307337111] [2024-11-27 23:27:09,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:09,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:27:09,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:09,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:27:09,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:09,984 INFO L87 Difference]: Start difference. First operand 914 states and 1669 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:10,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:10,081 INFO L93 Difference]: Finished difference Result 922 states and 1678 transitions. [2024-11-27 23:27:10,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:10,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-27 23:27:10,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:10,091 INFO L225 Difference]: With dead ends: 922 [2024-11-27 23:27:10,091 INFO L226 Difference]: Without dead ends: 920 [2024-11-27 23:27:10,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:10,093 INFO L435 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 4560 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6083 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:10,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6083 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:10,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-27 23:27:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 920. [2024-11-27 23:27:10,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 918 states have (on average 1.8235294117647058) internal successors, (1674), 919 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1674 transitions. [2024-11-27 23:27:10,136 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1674 transitions. Word has length 48 [2024-11-27 23:27:10,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:10,139 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1674 transitions. [2024-11-27 23:27:10,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:10,139 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1674 transitions. [2024-11-27 23:27:10,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-27 23:27:10,140 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:10,140 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:10,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:27:10,140 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:10,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:10,141 INFO L85 PathProgramCache]: Analyzing trace with hash -912919064, now seen corresponding path program 1 times [2024-11-27 23:27:10,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:10,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483975611] [2024-11-27 23:27:10,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:10,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:10,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:10,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483975611] [2024-11-27 23:27:10,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483975611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:10,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:10,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:10,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902078566] [2024-11-27 23:27:10,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:10,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:10,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:10,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:10,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:10,277 INFO L87 Difference]: Start difference. First operand 920 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:10,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:10,335 INFO L93 Difference]: Finished difference Result 1071 states and 1900 transitions. [2024-11-27 23:27:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:10,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-27 23:27:10,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:10,342 INFO L225 Difference]: With dead ends: 1071 [2024-11-27 23:27:10,342 INFO L226 Difference]: Without dead ends: 993 [2024-11-27 23:27:10,343 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 [2024-11-27 23:27:10,344 INFO L435 NwaCegarLoop]: 1568 mSDtfsCounter, 1486 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:10,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:10,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2024-11-27 23:27:10,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 991. [2024-11-27 23:27:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 989 states have (on average 1.7977755308392316) internal successors, (1778), 990 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:10,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1778 transitions. [2024-11-27 23:27:10,382 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1778 transitions. Word has length 49 [2024-11-27 23:27:10,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:10,382 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1778 transitions. [2024-11-27 23:27:10,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:10,383 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1778 transitions. [2024-11-27 23:27:10,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-27 23:27:10,384 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:10,384 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:10,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:27:10,385 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:10,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:10,385 INFO L85 PathProgramCache]: Analyzing trace with hash 325342952, now seen corresponding path program 1 times [2024-11-27 23:27:10,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:10,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411824710] [2024-11-27 23:27:10,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:10,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:10,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:10,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:10,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411824710] [2024-11-27 23:27:10,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411824710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:10,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:10,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:10,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679308088] [2024-11-27 23:27:10,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:10,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:10,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:10,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:10,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:10,514 INFO L87 Difference]: Start difference. First operand 991 states and 1778 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:10,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:10,566 INFO L93 Difference]: Finished difference Result 1377 states and 2350 transitions. [2024-11-27 23:27:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:10,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-27 23:27:10,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:10,573 INFO L225 Difference]: With dead ends: 1377 [2024-11-27 23:27:10,573 INFO L226 Difference]: Without dead ends: 1172 [2024-11-27 23:27:10,574 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 [2024-11-27 23:27:10,575 INFO L435 NwaCegarLoop]: 1570 mSDtfsCounter, 1484 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:10,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1633 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:10,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2024-11-27 23:27:10,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1170. [2024-11-27 23:27:10,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1168 states have (on average 1.7431506849315068) internal successors, (2036), 1169 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:10,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 2036 transitions. [2024-11-27 23:27:10,621 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 2036 transitions. Word has length 49 [2024-11-27 23:27:10,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:10,621 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 2036 transitions. [2024-11-27 23:27:10,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:10,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 2036 transitions. [2024-11-27 23:27:10,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-27 23:27:10,622 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:10,623 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:10,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:27:10,623 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:10,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:10,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1890125848, now seen corresponding path program 1 times [2024-11-27 23:27:10,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:10,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696780429] [2024-11-27 23:27:10,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:10,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:10,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:10,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696780429] [2024-11-27 23:27:10,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696780429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:10,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:10,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:10,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487471669] [2024-11-27 23:27:10,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:10,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:10,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:10,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:10,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:10,722 INFO L87 Difference]: Start difference. First operand 1170 states and 2036 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:10,797 INFO L93 Difference]: Finished difference Result 1890 states and 3082 transitions. [2024-11-27 23:27:10,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:10,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-27 23:27:10,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:10,807 INFO L225 Difference]: With dead ends: 1890 [2024-11-27 23:27:10,807 INFO L226 Difference]: Without dead ends: 1506 [2024-11-27 23:27:10,809 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 [2024-11-27 23:27:10,810 INFO L435 NwaCegarLoop]: 1568 mSDtfsCounter, 1482 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:10,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1635 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:10,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-27 23:27:10,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1504. [2024-11-27 23:27:10,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1502 states have (on average 1.66711051930759) internal successors, (2504), 1503 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:10,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 2504 transitions. [2024-11-27 23:27:10,872 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 2504 transitions. Word has length 49 [2024-11-27 23:27:10,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:10,873 INFO L471 AbstractCegarLoop]: Abstraction has 1504 states and 2504 transitions. [2024-11-27 23:27:10,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:10,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 2504 transitions. [2024-11-27 23:27:10,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-27 23:27:10,875 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:10,875 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:10,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:27:10,875 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:10,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:10,876 INFO L85 PathProgramCache]: Analyzing trace with hash -109192984, now seen corresponding path program 1 times [2024-11-27 23:27:10,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:10,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487922015] [2024-11-27 23:27:10,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:10,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:10,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:10,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:10,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487922015] [2024-11-27 23:27:10,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487922015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:10,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:10,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:10,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299291298] [2024-11-27 23:27:10,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:10,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:10,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:10,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:10,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:10,974 INFO L87 Difference]: Start difference. First operand 1504 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:11,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:11,094 INFO L93 Difference]: Finished difference Result 2844 states and 4402 transitions. [2024-11-27 23:27:11,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:11,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-27 23:27:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:11,105 INFO L225 Difference]: With dead ends: 2844 [2024-11-27 23:27:11,105 INFO L226 Difference]: Without dead ends: 2126 [2024-11-27 23:27:11,107 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 [2024-11-27 23:27:11,108 INFO L435 NwaCegarLoop]: 1566 mSDtfsCounter, 1480 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:11,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1637 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:11,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2024-11-27 23:27:11,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 2124. [2024-11-27 23:27:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 2122 states have (on average 1.5758718190386427) internal successors, (3344), 2123 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3344 transitions. [2024-11-27 23:27:11,194 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3344 transitions. Word has length 49 [2024-11-27 23:27:11,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:11,196 INFO L471 AbstractCegarLoop]: Abstraction has 2124 states and 3344 transitions. [2024-11-27 23:27:11,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:11,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3344 transitions. [2024-11-27 23:27:11,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-27 23:27:11,198 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:11,198 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:11,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:27:11,198 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:11,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:11,199 INFO L85 PathProgramCache]: Analyzing trace with hash -280922677, now seen corresponding path program 1 times [2024-11-27 23:27:11,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:11,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926522581] [2024-11-27 23:27:11,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:11,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 23:27:11,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:11,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926522581] [2024-11-27 23:27:11,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926522581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:11,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:11,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:27:11,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068225498] [2024-11-27 23:27:11,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:11,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:11,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:11,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:11,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:11,433 INFO L87 Difference]: Start difference. First operand 2124 states and 3344 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:11,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:11,768 INFO L93 Difference]: Finished difference Result 7398 states and 10717 transitions. [2024-11-27 23:27:11,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:11,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-27 23:27:11,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:11,797 INFO L225 Difference]: With dead ends: 7398 [2024-11-27 23:27:11,797 INFO L226 Difference]: Without dead ends: 6436 [2024-11-27 23:27:11,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:27:11,802 INFO L435 NwaCegarLoop]: 1579 mSDtfsCounter, 4650 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4650 SdHoareTripleChecker+Valid, 3398 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:11,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4650 Valid, 3398 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:11,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6436 states. [2024-11-27 23:27:11,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6436 to 3276. [2024-11-27 23:27:11,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3276 states, 3274 states have (on average 1.5076359193646915) internal successors, (4936), 3275 states have internal predecessors, (4936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:11,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 4936 transitions. [2024-11-27 23:27:11,981 INFO L78 Accepts]: Start accepts. Automaton has 3276 states and 4936 transitions. Word has length 67 [2024-11-27 23:27:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:11,981 INFO L471 AbstractCegarLoop]: Abstraction has 3276 states and 4936 transitions. [2024-11-27 23:27:11,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3276 states and 4936 transitions. [2024-11-27 23:27:11,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-27 23:27:11,990 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:11,990 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:11,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:27:11,990 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:11,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:11,991 INFO L85 PathProgramCache]: Analyzing trace with hash 957339339, now seen corresponding path program 1 times [2024-11-27 23:27:11,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:11,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617601918] [2024-11-27 23:27:11,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:11,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:12,224 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 23:27:12,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:12,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617601918] [2024-11-27 23:27:12,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617601918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:12,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:12,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:27:12,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263704193] [2024-11-27 23:27:12,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:12,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:12,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:12,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:12,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:12,227 INFO L87 Difference]: Start difference. First operand 3276 states and 4936 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:12,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:12,649 INFO L93 Difference]: Finished difference Result 8734 states and 12573 transitions. [2024-11-27 23:27:12,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:12,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-27 23:27:12,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:12,680 INFO L225 Difference]: With dead ends: 8734 [2024-11-27 23:27:12,681 INFO L226 Difference]: Without dead ends: 7396 [2024-11-27 23:27:12,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:27:12,684 INFO L435 NwaCegarLoop]: 1578 mSDtfsCounter, 4652 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4652 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:12,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4652 Valid, 3373 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:12,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7396 states. [2024-11-27 23:27:12,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7396 to 5092. [2024-11-27 23:27:12,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5092 states, 5090 states have (on average 1.461689587426326) internal successors, (7440), 5091 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:12,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 7440 transitions. [2024-11-27 23:27:12,939 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 7440 transitions. Word has length 67 [2024-11-27 23:27:12,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:12,940 INFO L471 AbstractCegarLoop]: Abstraction has 5092 states and 7440 transitions. [2024-11-27 23:27:12,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:12,940 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 7440 transitions. [2024-11-27 23:27:12,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-27 23:27:12,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:12,943 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:12,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:27:12,943 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:12,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:12,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1258129461, now seen corresponding path program 1 times [2024-11-27 23:27:12,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:12,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653202076] [2024-11-27 23:27:12,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:12,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 23:27:13,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:13,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653202076] [2024-11-27 23:27:13,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653202076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:13,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:13,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:27:13,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095027892] [2024-11-27 23:27:13,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:13,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:13,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:13,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:13,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:13,143 INFO L87 Difference]: Start difference. First operand 5092 states and 7440 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:13,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:13,520 INFO L93 Difference]: Finished difference Result 10070 states and 14421 transitions. [2024-11-27 23:27:13,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:13,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-27 23:27:13,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:13,545 INFO L225 Difference]: With dead ends: 10070 [2024-11-27 23:27:13,546 INFO L226 Difference]: Without dead ends: 8732 [2024-11-27 23:27:13,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:27:13,551 INFO L435 NwaCegarLoop]: 1576 mSDtfsCounter, 4677 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 3343 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:13,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4677 Valid, 3343 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:13,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8732 states. [2024-11-27 23:27:14,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8732 to 6428. [2024-11-27 23:27:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6428 states, 6426 states have (on average 1.4453781512605042) internal successors, (9288), 6427 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:14,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6428 states to 6428 states and 9288 transitions. [2024-11-27 23:27:14,067 INFO L78 Accepts]: Start accepts. Automaton has 6428 states and 9288 transitions. Word has length 67 [2024-11-27 23:27:14,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:14,071 INFO L471 AbstractCegarLoop]: Abstraction has 6428 states and 9288 transitions. [2024-11-27 23:27:14,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:14,072 INFO L276 IsEmpty]: Start isEmpty. Operand 6428 states and 9288 transitions. [2024-11-27 23:27:14,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-27 23:27:14,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:14,078 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:14,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:27:14,078 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:14,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:14,079 INFO L85 PathProgramCache]: Analyzing trace with hash 522803403, now seen corresponding path program 1 times [2024-11-27 23:27:14,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:14,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638434780] [2024-11-27 23:27:14,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:14,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:14,396 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:27:14,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:14,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638434780] [2024-11-27 23:27:14,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638434780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:14,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:14,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:27:14,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579189748] [2024-11-27 23:27:14,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:14,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:14,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:14,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:14,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:14,399 INFO L87 Difference]: Start difference. First operand 6428 states and 9288 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:14,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:14,770 INFO L93 Difference]: Finished difference Result 11406 states and 16269 transitions. [2024-11-27 23:27:14,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:14,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-27 23:27:14,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:14,799 INFO L225 Difference]: With dead ends: 11406 [2024-11-27 23:27:14,799 INFO L226 Difference]: Without dead ends: 10068 [2024-11-27 23:27:14,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:27:14,805 INFO L435 NwaCegarLoop]: 1575 mSDtfsCounter, 4664 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4664 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:14,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4664 Valid, 3376 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:14,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10068 states. [2024-11-27 23:27:15,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10068 to 7764. [2024-11-27 23:27:15,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7764 states, 7762 states have (on average 1.434681783045607) internal successors, (11136), 7763 states have internal predecessors, (11136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:15,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7764 states to 7764 states and 11136 transitions. [2024-11-27 23:27:15,181 INFO L78 Accepts]: Start accepts. Automaton has 7764 states and 11136 transitions. Word has length 67 [2024-11-27 23:27:15,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:15,182 INFO L471 AbstractCegarLoop]: Abstraction has 7764 states and 11136 transitions. [2024-11-27 23:27:15,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:15,183 INFO L276 IsEmpty]: Start isEmpty. Operand 7764 states and 11136 transitions. [2024-11-27 23:27:15,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-27 23:27:15,185 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:15,185 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:15,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 23:27:15,186 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:15,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:15,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1663844881, now seen corresponding path program 1 times [2024-11-27 23:27:15,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:15,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734994441] [2024-11-27 23:27:15,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:15,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:15,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:15,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734994441] [2024-11-27 23:27:15,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734994441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:15,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:15,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:27:15,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573998589] [2024-11-27 23:27:15,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:15,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:15,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:15,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:15,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:15,283 INFO L87 Difference]: Start difference. First operand 7764 states and 11136 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:21,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:21,369 INFO L93 Difference]: Finished difference Result 9268 states and 14009 transitions. [2024-11-27 23:27:21,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:21,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-27 23:27:21,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:21,389 INFO L225 Difference]: With dead ends: 9268 [2024-11-27 23:27:21,389 INFO L226 Difference]: Without dead ends: 8515 [2024-11-27 23:27:21,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:21,393 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 821 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:21,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 562 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-27 23:27:21,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8515 states. [2024-11-27 23:27:21,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8515 to 8515. [2024-11-27 23:27:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8515 states, 8513 states have (on average 1.4231175848701985) internal successors, (12115), 8514 states have internal predecessors, (12115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:21,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8515 states to 8515 states and 12115 transitions. [2024-11-27 23:27:21,997 INFO L78 Accepts]: Start accepts. Automaton has 8515 states and 12115 transitions. Word has length 67 [2024-11-27 23:27:21,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:21,997 INFO L471 AbstractCegarLoop]: Abstraction has 8515 states and 12115 transitions. [2024-11-27 23:27:21,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 2 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:21,997 INFO L276 IsEmpty]: Start isEmpty. Operand 8515 states and 12115 transitions. [2024-11-27 23:27:22,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-27 23:27:22,005 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:22,005 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:22,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:27:22,009 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:22,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:22,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1681723190, now seen corresponding path program 1 times [2024-11-27 23:27:22,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:22,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283104289] [2024-11-27 23:27:22,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:22,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:22,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:22,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283104289] [2024-11-27 23:27:22,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283104289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:22,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:22,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:22,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912657252] [2024-11-27 23:27:22,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:22,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:22,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:22,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:22,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:22,289 INFO L87 Difference]: Start difference. First operand 8515 states and 12115 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:22,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:22,481 INFO L93 Difference]: Finished difference Result 15495 states and 21781 transitions. [2024-11-27 23:27:22,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:22,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-27 23:27:22,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:22,506 INFO L225 Difference]: With dead ends: 15495 [2024-11-27 23:27:22,506 INFO L226 Difference]: Without dead ends: 8517 [2024-11-27 23:27:22,515 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 [2024-11-27 23:27:22,517 INFO L435 NwaCegarLoop]: 1553 mSDtfsCounter, 37 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:22,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3067 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:22,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8517 states. [2024-11-27 23:27:22,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8517 to 8515. [2024-11-27 23:27:22,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8515 states, 8513 states have (on average 1.4085516269235288) internal successors, (11991), 8514 states have internal predecessors, (11991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:22,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8515 states to 8515 states and 11991 transitions. [2024-11-27 23:27:22,909 INFO L78 Accepts]: Start accepts. Automaton has 8515 states and 11991 transitions. Word has length 68 [2024-11-27 23:27:22,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:22,909 INFO L471 AbstractCegarLoop]: Abstraction has 8515 states and 11991 transitions. [2024-11-27 23:27:22,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:22,910 INFO L276 IsEmpty]: Start isEmpty. Operand 8515 states and 11991 transitions. [2024-11-27 23:27:22,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 23:27:22,911 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:22,911 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:22,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:27:22,912 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:22,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:22,914 INFO L85 PathProgramCache]: Analyzing trace with hash -469102173, now seen corresponding path program 1 times [2024-11-27 23:27:22,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:22,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747971756] [2024-11-27 23:27:22,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:22,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:23,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:23,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747971756] [2024-11-27 23:27:23,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747971756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:23,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:23,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:23,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467361591] [2024-11-27 23:27:23,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:23,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:23,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:23,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:23,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:23,077 INFO L87 Difference]: Start difference. First operand 8515 states and 11991 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:23,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:23,184 INFO L93 Difference]: Finished difference Result 11177 states and 15664 transitions. [2024-11-27 23:27:23,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:23,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-27 23:27:23,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:23,196 INFO L225 Difference]: With dead ends: 11177 [2024-11-27 23:27:23,196 INFO L226 Difference]: Without dead ends: 4199 [2024-11-27 23:27:23,203 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 [2024-11-27 23:27:23,204 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 31 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:23,204 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:23,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2024-11-27 23:27:23,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 4190. [2024-11-27 23:27:23,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4188 states have (on average 1.4493791786055397) internal successors, (6070), 4189 states have internal predecessors, (6070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:23,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 6070 transitions. [2024-11-27 23:27:23,337 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 6070 transitions. Word has length 69 [2024-11-27 23:27:23,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:23,338 INFO L471 AbstractCegarLoop]: Abstraction has 4190 states and 6070 transitions. [2024-11-27 23:27:23,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:23,338 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 6070 transitions. [2024-11-27 23:27:23,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-27 23:27:23,339 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:23,340 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:23,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:27:23,341 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:23,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:23,345 INFO L85 PathProgramCache]: Analyzing trace with hash 422947784, now seen corresponding path program 1 times [2024-11-27 23:27:23,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:23,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355136067] [2024-11-27 23:27:23,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:23,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:23,536 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:23,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:23,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355136067] [2024-11-27 23:27:23,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355136067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:23,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:23,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:23,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643353654] [2024-11-27 23:27:23,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:23,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:23,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:23,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:23,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:23,537 INFO L87 Difference]: Start difference. First operand 4190 states and 6070 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:23,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:23,601 INFO L93 Difference]: Finished difference Result 5514 states and 7876 transitions. [2024-11-27 23:27:23,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:23,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-27 23:27:23,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:23,610 INFO L225 Difference]: With dead ends: 5514 [2024-11-27 23:27:23,610 INFO L226 Difference]: Without dead ends: 2872 [2024-11-27 23:27:23,613 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 [2024-11-27 23:27:23,614 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 33 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:23,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:23,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2024-11-27 23:27:23,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 2870. [2024-11-27 23:27:23,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2868 states have (on average 1.4797768479776847) internal successors, (4244), 2869 states have internal predecessors, (4244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:23,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 4244 transitions. [2024-11-27 23:27:23,700 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 4244 transitions. Word has length 70 [2024-11-27 23:27:23,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:23,700 INFO L471 AbstractCegarLoop]: Abstraction has 2870 states and 4244 transitions. [2024-11-27 23:27:23,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:23,701 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 4244 transitions. [2024-11-27 23:27:23,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-27 23:27:23,702 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:23,702 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:23,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 23:27:23,703 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:23,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:23,704 INFO L85 PathProgramCache]: Analyzing trace with hash 975382234, now seen corresponding path program 1 times [2024-11-27 23:27:23,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:23,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073842194] [2024-11-27 23:27:23,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:23,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:23,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:23,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073842194] [2024-11-27 23:27:23,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073842194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:23,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:23,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:23,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399470271] [2024-11-27 23:27:23,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:23,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:23,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:23,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:23,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:23,868 INFO L87 Difference]: Start difference. First operand 2870 states and 4244 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:23,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:23,915 INFO L93 Difference]: Finished difference Result 3534 states and 5137 transitions. [2024-11-27 23:27:23,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:23,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-27 23:27:23,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:23,922 INFO L225 Difference]: With dead ends: 3534 [2024-11-27 23:27:23,922 INFO L226 Difference]: Without dead ends: 2212 [2024-11-27 23:27:23,924 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 [2024-11-27 23:27:23,925 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 30 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:23,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:23,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2024-11-27 23:27:23,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 2210. [2024-11-27 23:27:23,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 2208 states have (on average 1.513586956521739) internal successors, (3342), 2209 states have internal predecessors, (3342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 3342 transitions. [2024-11-27 23:27:23,980 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 3342 transitions. Word has length 72 [2024-11-27 23:27:23,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:23,981 INFO L471 AbstractCegarLoop]: Abstraction has 2210 states and 3342 transitions. [2024-11-27 23:27:23,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 3342 transitions. [2024-11-27 23:27:23,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-27 23:27:23,984 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:23,985 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:23,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 23:27:23,985 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:23,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:23,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1652203628, now seen corresponding path program 1 times [2024-11-27 23:27:23,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:23,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850128928] [2024-11-27 23:27:23,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:23,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:26,692 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:26,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:26,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850128928] [2024-11-27 23:27:26,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850128928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:26,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19088258] [2024-11-27 23:27:26,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:26,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:26,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:26,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:26,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:27:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:26,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 23:27:26,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:27,291 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:28,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19088258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:28,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:28,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2024-11-27 23:27:28,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919223935] [2024-11-27 23:27:28,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:28,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-27 23:27:28,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:28,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-27 23:27:28,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:27:28,026 INFO L87 Difference]: Start difference. First operand 2210 states and 3342 transitions. Second operand has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:36,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:36,268 INFO L93 Difference]: Finished difference Result 8126 states and 11018 transitions. [2024-11-27 23:27:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-27 23:27:36,269 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-27 23:27:36,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:36,288 INFO L225 Difference]: With dead ends: 8126 [2024-11-27 23:27:36,288 INFO L226 Difference]: Without dead ends: 7390 [2024-11-27 23:27:36,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4084 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1738, Invalid=9392, Unknown=0, NotChecked=0, Total=11130 [2024-11-27 23:27:36,294 INFO L435 NwaCegarLoop]: 1515 mSDtfsCounter, 16817 mSDsluCounter, 7977 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16817 SdHoareTripleChecker+Valid, 9492 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:36,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16817 Valid, 9492 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-27 23:27:36,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7390 states. [2024-11-27 23:27:36,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7390 to 6652. [2024-11-27 23:27:36,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6652 states, 6650 states have (on average 1.3562406015037594) internal successors, (9019), 6651 states have internal predecessors, (9019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6652 states to 6652 states and 9019 transitions. [2024-11-27 23:27:36,633 INFO L78 Accepts]: Start accepts. Automaton has 6652 states and 9019 transitions. Word has length 74 [2024-11-27 23:27:36,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:36,633 INFO L471 AbstractCegarLoop]: Abstraction has 6652 states and 9019 transitions. [2024-11-27 23:27:36,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.5) internal successors, (209), 22 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:36,634 INFO L276 IsEmpty]: Start isEmpty. Operand 6652 states and 9019 transitions. [2024-11-27 23:27:36,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-27 23:27:36,635 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:36,636 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:36,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:27:36,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:36,839 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:36,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:36,840 INFO L85 PathProgramCache]: Analyzing trace with hash 619603757, now seen corresponding path program 1 times [2024-11-27 23:27:36,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:36,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793270505] [2024-11-27 23:27:36,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:36,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:38,951 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:38,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:38,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793270505] [2024-11-27 23:27:38,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793270505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:38,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386559755] [2024-11-27 23:27:38,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:38,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:38,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:38,955 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:38,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:27:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:39,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 23:27:39,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:39,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:40,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386559755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:40,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:40,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2024-11-27 23:27:40,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651096619] [2024-11-27 23:27:40,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:40,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 23:27:40,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:40,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 23:27:40,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2024-11-27 23:27:40,971 INFO L87 Difference]: Start difference. First operand 6652 states and 9019 transitions. Second operand has 29 states, 29 states have (on average 6.655172413793103) internal successors, (193), 28 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:42,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:42,749 INFO L93 Difference]: Finished difference Result 26752 states and 34983 transitions. [2024-11-27 23:27:42,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-27 23:27:42,750 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.655172413793103) internal successors, (193), 28 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-27 23:27:42,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:42,792 INFO L225 Difference]: With dead ends: 26752 [2024-11-27 23:27:42,793 INFO L226 Difference]: Without dead ends: 21714 [2024-11-27 23:27:42,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=615, Invalid=2465, Unknown=0, NotChecked=0, Total=3080 [2024-11-27 23:27:42,803 INFO L435 NwaCegarLoop]: 1501 mSDtfsCounter, 23031 mSDsluCounter, 6369 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23031 SdHoareTripleChecker+Valid, 7870 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:42,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23031 Valid, 7870 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:27:42,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21714 states. [2024-11-27 23:27:43,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21714 to 21702. [2024-11-27 23:27:43,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21702 states, 21700 states have (on average 1.3009216589861752) internal successors, (28230), 21701 states have internal predecessors, (28230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:43,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21702 states to 21702 states and 28230 transitions. [2024-11-27 23:27:43,907 INFO L78 Accepts]: Start accepts. Automaton has 21702 states and 28230 transitions. Word has length 75 [2024-11-27 23:27:43,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:43,908 INFO L471 AbstractCegarLoop]: Abstraction has 21702 states and 28230 transitions. [2024-11-27 23:27:43,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.655172413793103) internal successors, (193), 28 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:43,908 INFO L276 IsEmpty]: Start isEmpty. Operand 21702 states and 28230 transitions. [2024-11-27 23:27:43,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-27 23:27:43,910 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:43,910 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:43,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:27:44,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:44,115 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:44,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:44,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2069741267, now seen corresponding path program 1 times [2024-11-27 23:27:44,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:44,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172645086] [2024-11-27 23:27:44,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:44,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:46,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:46,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172645086] [2024-11-27 23:27:46,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172645086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:46,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859918421] [2024-11-27 23:27:46,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:46,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:46,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:46,728 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:46,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:27:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:46,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 23:27:46,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:47,443 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:48,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859918421] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:48,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:48,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-27 23:27:48,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694603754] [2024-11-27 23:27:48,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:48,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 23:27:48,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:48,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 23:27:48,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2024-11-27 23:27:48,605 INFO L87 Difference]: Start difference. First operand 21702 states and 28230 transitions. Second operand has 28 states, 28 states have (on average 7.035714285714286) internal successors, (197), 27 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:54,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:54,311 INFO L93 Difference]: Finished difference Result 71118 states and 92570 transitions. [2024-11-27 23:27:54,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-27 23:27:54,312 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.035714285714286) internal successors, (197), 27 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-27 23:27:54,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:54,426 INFO L225 Difference]: With dead ends: 71118 [2024-11-27 23:27:54,426 INFO L226 Difference]: Without dead ends: 51782 [2024-11-27 23:27:54,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=845, Invalid=3577, Unknown=0, NotChecked=0, Total=4422 [2024-11-27 23:27:54,451 INFO L435 NwaCegarLoop]: 1500 mSDtfsCounter, 17666 mSDsluCounter, 9332 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17666 SdHoareTripleChecker+Valid, 10832 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:54,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17666 Valid, 10832 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 23:27:54,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51782 states. [2024-11-27 23:27:56,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51782 to 44018. [2024-11-27 23:27:56,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44018 states, 44016 states have (on average 1.2721737549981824) internal successors, (55996), 44017 states have internal predecessors, (55996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:56,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44018 states to 44018 states and 55996 transitions. [2024-11-27 23:27:56,157 INFO L78 Accepts]: Start accepts. Automaton has 44018 states and 55996 transitions. Word has length 75 [2024-11-27 23:27:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:56,158 INFO L471 AbstractCegarLoop]: Abstraction has 44018 states and 55996 transitions. [2024-11-27 23:27:56,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.035714285714286) internal successors, (197), 27 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 44018 states and 55996 transitions. [2024-11-27 23:27:56,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-27 23:27:56,161 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:56,161 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:56,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:27:56,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:56,362 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:56,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:56,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2128735329, now seen corresponding path program 1 times [2024-11-27 23:27:56,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:56,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709966785] [2024-11-27 23:27:56,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:56,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:56,974 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:56,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:56,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709966785] [2024-11-27 23:27:56,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709966785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:56,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351373927] [2024-11-27 23:27:56,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:56,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:56,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:56,977 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:56,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:27:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:57,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-27 23:27:57,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:58,469 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:00,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:00,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351373927] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:28:00,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:28:00,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 12] total 32 [2024-11-27 23:28:00,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389067718] [2024-11-27 23:28:00,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:28:00,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-27 23:28:00,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:00,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-27 23:28:00,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2024-11-27 23:28:00,136 INFO L87 Difference]: Start difference. First operand 44018 states and 55996 transitions. Second operand has 32 states, 32 states have (on average 6.40625) internal successors, (205), 32 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:09,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:09,399 INFO L93 Difference]: Finished difference Result 124506 states and 158056 transitions. [2024-11-27 23:28:09,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-27 23:28:09,400 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.40625) internal successors, (205), 32 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-27 23:28:09,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:09,497 INFO L225 Difference]: With dead ends: 124506 [2024-11-27 23:28:09,497 INFO L226 Difference]: Without dead ends: 82580 [2024-11-27 23:28:09,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2038 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1461, Invalid=5849, Unknown=0, NotChecked=0, Total=7310 [2024-11-27 23:28:09,534 INFO L435 NwaCegarLoop]: 1511 mSDtfsCounter, 16645 mSDsluCounter, 8215 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16645 SdHoareTripleChecker+Valid, 9726 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:09,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16645 Valid, 9726 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 23:28:09,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82580 states. [2024-11-27 23:28:11,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82580 to 47034. [2024-11-27 23:28:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47034 states, 47032 states have (on average 1.25680387821058) internal successors, (59110), 47033 states have internal predecessors, (59110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47034 states to 47034 states and 59110 transitions. [2024-11-27 23:28:11,780 INFO L78 Accepts]: Start accepts. Automaton has 47034 states and 59110 transitions. Word has length 75 [2024-11-27 23:28:11,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:11,780 INFO L471 AbstractCegarLoop]: Abstraction has 47034 states and 59110 transitions. [2024-11-27 23:28:11,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.40625) internal successors, (205), 32 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:11,781 INFO L276 IsEmpty]: Start isEmpty. Operand 47034 states and 59110 transitions. [2024-11-27 23:28:11,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-27 23:28:11,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:11,783 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:11,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 23:28:11,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:11,988 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:11,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:11,988 INFO L85 PathProgramCache]: Analyzing trace with hash -830754321, now seen corresponding path program 1 times [2024-11-27 23:28:11,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:11,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768902482] [2024-11-27 23:28:11,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:11,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:13,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:13,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768902482] [2024-11-27 23:28:13,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768902482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:13,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173915718] [2024-11-27 23:28:13,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:13,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:13,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:13,097 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:13,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:28:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:13,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-27 23:28:13,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:17,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:21,626 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:21,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173915718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:28:21,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:28:21,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 27, 24] total 57 [2024-11-27 23:28:21,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933830435] [2024-11-27 23:28:21,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:28:21,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-27 23:28:21,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:21,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-27 23:28:21,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=538, Invalid=2654, Unknown=0, NotChecked=0, Total=3192 [2024-11-27 23:28:21,629 INFO L87 Difference]: Start difference. First operand 47034 states and 59110 transitions. Second operand has 57 states, 57 states have (on average 3.456140350877193) internal successors, (197), 57 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:43,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:43,707 INFO L93 Difference]: Finished difference Result 120356 states and 150280 transitions. [2024-11-27 23:28:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-27 23:28:43,707 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.456140350877193) internal successors, (197), 57 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-27 23:28:43,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:43,823 INFO L225 Difference]: With dead ends: 120356 [2024-11-27 23:28:43,823 INFO L226 Difference]: Without dead ends: 102682 [2024-11-27 23:28:43,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8702 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=4487, Invalid=18465, Unknown=0, NotChecked=0, Total=22952 [2024-11-27 23:28:43,862 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 24517 mSDsluCounter, 25441 mSDsCounter, 0 mSdLazyCounter, 3420 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24517 SdHoareTripleChecker+Valid, 26961 SdHoareTripleChecker+Invalid, 3493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 3420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:43,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24517 Valid, 26961 Invalid, 3493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 3420 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-27 23:28:43,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102682 states. [2024-11-27 23:28:46,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102682 to 55512. [2024-11-27 23:28:46,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55512 states, 55510 states have (on average 1.2585119798234552) internal successors, (69860), 55511 states have internal predecessors, (69860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:46,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55512 states to 55512 states and 69860 transitions. [2024-11-27 23:28:46,629 INFO L78 Accepts]: Start accepts. Automaton has 55512 states and 69860 transitions. Word has length 77 [2024-11-27 23:28:46,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:46,629 INFO L471 AbstractCegarLoop]: Abstraction has 55512 states and 69860 transitions. [2024-11-27 23:28:46,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.456140350877193) internal successors, (197), 57 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:46,629 INFO L276 IsEmpty]: Start isEmpty. Operand 55512 states and 69860 transitions. [2024-11-27 23:28:46,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-27 23:28:46,631 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:46,631 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:46,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 23:28:46,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:46,832 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:46,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:46,832 INFO L85 PathProgramCache]: Analyzing trace with hash -747594897, now seen corresponding path program 1 times [2024-11-27 23:28:46,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:46,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295228576] [2024-11-27 23:28:46,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:46,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:48,064 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:48,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:48,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295228576] [2024-11-27 23:28:48,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295228576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:48,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633806739] [2024-11-27 23:28:48,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:48,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:48,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:48,068 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:48,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:28:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:48,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-27 23:28:48,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:49,315 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:51,080 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:51,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633806739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:28:51,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:28:51,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-27 23:28:51,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660502914] [2024-11-27 23:28:51,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:28:51,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 23:28:51,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:51,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 23:28:51,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2024-11-27 23:28:51,082 INFO L87 Difference]: Start difference. First operand 55512 states and 69860 transitions. Second operand has 30 states, 30 states have (on average 6.633333333333334) internal successors, (199), 30 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:58,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:58,692 INFO L93 Difference]: Finished difference Result 114216 states and 142160 transitions. [2024-11-27 23:28:58,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-27 23:28:58,693 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.633333333333334) internal successors, (199), 30 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-27 23:28:58,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:58,762 INFO L225 Difference]: With dead ends: 114216 [2024-11-27 23:28:58,762 INFO L226 Difference]: Without dead ends: 83052 [2024-11-27 23:28:58,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1026, Invalid=3666, Unknown=0, NotChecked=0, Total=4692 [2024-11-27 23:28:58,780 INFO L435 NwaCegarLoop]: 1512 mSDtfsCounter, 7051 mSDsluCounter, 21232 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7051 SdHoareTripleChecker+Valid, 22744 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:58,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7051 Valid, 22744 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 23:28:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83052 states. [2024-11-27 23:29:02,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83052 to 73667. [2024-11-27 23:29:02,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73667 states, 73665 states have (on average 1.2427339985067536) internal successors, (91546), 73666 states have internal predecessors, (91546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73667 states to 73667 states and 91546 transitions. [2024-11-27 23:29:03,082 INFO L78 Accepts]: Start accepts. Automaton has 73667 states and 91546 transitions. Word has length 77 [2024-11-27 23:29:03,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:03,083 INFO L471 AbstractCegarLoop]: Abstraction has 73667 states and 91546 transitions. [2024-11-27 23:29:03,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.633333333333334) internal successors, (199), 30 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:29:03,083 INFO L276 IsEmpty]: Start isEmpty. Operand 73667 states and 91546 transitions. [2024-11-27 23:29:03,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-27 23:29:03,085 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:03,085 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:03,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:29:03,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:03,286 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:29:03,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:03,286 INFO L85 PathProgramCache]: Analyzing trace with hash 400854277, now seen corresponding path program 1 times [2024-11-27 23:29:03,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:29:03,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705215014] [2024-11-27 23:29:03,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:03,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:29:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:04,467 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:04,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:29:04,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705215014] [2024-11-27 23:29:04,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705215014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:04,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420483188] [2024-11-27 23:29:04,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:04,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:04,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:04,470 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:04,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4eea9797-a766-4486-9f87-043af1c3699d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:29:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:04,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 23:29:04,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:06,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:29:08,469 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:29:08,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420483188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:29:08,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:29:08,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 33 [2024-11-27 23:29:08,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553746176] [2024-11-27 23:29:08,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:29:08,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-27 23:29:08,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:29:08,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-27 23:29:08,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 23:29:08,471 INFO L87 Difference]: Start difference. First operand 73667 states and 91546 transitions. Second operand has 33 states, 33 states have (on average 5.787878787878788) internal successors, (191), 33 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)