./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.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_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/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_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/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_7821b685-1004-46fd-a84f-91eaa83d97a0/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 cb2818f0d8bce3a3c55c338823c603b0097898f29d2ecfaf46bb61225da928d8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:38:06,108 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:38:06,227 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:38:06,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:38:06,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:38:06,293 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:38:06,295 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:38:06,295 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:38:06,296 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:38:06,297 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:38:06,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:38:06,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:38:06,299 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:38:06,299 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:38:06,300 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:38:06,300 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:38:06,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:38:06,301 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:38:06,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:38:06,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:38:06,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:38:06,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:38:06,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:38:06,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:38:06,302 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:38:06,303 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:38:06,303 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:38:06,303 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:38:06,303 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:38:06,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:38:06,303 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:38:06,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:38:06,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:38:06,305 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:38:06,305 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:38:06,305 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:38:06,305 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:38:06,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:38:06,306 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:38:06,306 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:38:06,306 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:38:06,306 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:38:06,306 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:38:06,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:38:06,306 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:38:06,307 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:38:06,307 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:38:06,307 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:38:06,307 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_7821b685-1004-46fd-a84f-91eaa83d97a0/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 -> cb2818f0d8bce3a3c55c338823c603b0097898f29d2ecfaf46bb61225da928d8 [2024-11-28 03:38:06,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:38:06,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:38:06,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:38:06,749 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:38:06,750 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:38:06,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2024-11-28 03:38:10,062 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/data/66b944b7f/a73295d24daf4513a950f4b934608746/FLAGa2761c556 [2024-11-28 03:38:10,642 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:38:10,646 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2024-11-28 03:38:10,684 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/data/66b944b7f/a73295d24daf4513a950f4b934608746/FLAGa2761c556 [2024-11-28 03:38:10,711 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/data/66b944b7f/a73295d24daf4513a950f4b934608746 [2024-11-28 03:38:10,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:38:10,718 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:38:10,723 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:38:10,723 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:38:10,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:38:10,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:38:10" (1/1) ... [2024-11-28 03:38:10,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3373a1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:10, skipping insertion in model container [2024-11-28 03:38:10,734 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:38:10" (1/1) ... [2024-11-28 03:38:10,828 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:38:11,626 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_7821b685-1004-46fd-a84f-91eaa83d97a0/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c[73221,73234] [2024-11-28 03:38:11,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:38:11,647 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:38:11,658 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [48] [2024-11-28 03:38:11,660 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [242] [2024-11-28 03:38:11,660 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1847] [2024-11-28 03:38:11,660 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2213] [2024-11-28 03:38:11,660 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2231] [2024-11-28 03:38:11,661 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2350] [2024-11-28 03:38:11,661 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2703] [2024-11-28 03:38:11,661 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3364] [2024-11-28 03:38:11,661 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3455] [2024-11-28 03:38:11,661 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3464] [2024-11-28 03:38:11,863 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_7821b685-1004-46fd-a84f-91eaa83d97a0/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c[73221,73234] [2024-11-28 03:38:11,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:38:11,915 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:38:11,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:11 WrapperNode [2024-11-28 03:38:11,916 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:38:11,918 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:38:11,918 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:38:11,919 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:38:11,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:11" (1/1) ... [2024-11-28 03:38:11,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:11" (1/1) ... [2024-11-28 03:38:12,066 INFO L138 Inliner]: procedures = 95, calls = 354, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 1154 [2024-11-28 03:38:12,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:38:12,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:38:12,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:38:12,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:38:12,093 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:11" (1/1) ... [2024-11-28 03:38:12,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:11" (1/1) ... [2024-11-28 03:38:12,107 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:11" (1/1) ... [2024-11-28 03:38:12,156 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-28 03:38:12,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:11" (1/1) ... [2024-11-28 03:38:12,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:11" (1/1) ... [2024-11-28 03:38:12,197 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:11" (1/1) ... [2024-11-28 03:38:12,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:11" (1/1) ... [2024-11-28 03:38:12,217 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:11" (1/1) ... [2024-11-28 03:38:12,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:11" (1/1) ... [2024-11-28 03:38:12,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:11" (1/1) ... [2024-11-28 03:38:12,240 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:38:12,241 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:38:12,241 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:38:12,242 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:38:12,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:11" (1/1) ... [2024-11-28 03:38:12,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:38:12,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:12,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:38:12,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:38:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:38:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-28 03:38:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-28 03:38:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-28 03:38:12,346 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-28 03:38:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-28 03:38:12,346 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-28 03:38:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-28 03:38:12,347 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-28 03:38:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-28 03:38:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-28 03:38:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-28 03:38:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-28 03:38:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-28 03:38:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-28 03:38:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-28 03:38:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-28 03:38:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-28 03:38:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-28 03:38:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-28 03:38:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-28 03:38:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-28 03:38:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-28 03:38:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-28 03:38:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-28 03:38:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-28 03:38:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-28 03:38:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-28 03:38:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-28 03:38:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-28 03:38:12,350 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-28 03:38:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-28 03:38:12,353 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-28 03:38:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-28 03:38:12,354 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2024-11-28 03:38:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-28 03:38:12,354 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-28 03:38:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-28 03:38:12,354 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-28 03:38:12,354 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-28 03:38:12,355 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-28 03:38:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-28 03:38:12,355 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-28 03:38:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-28 03:38:12,355 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-28 03:38:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:38:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:38:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:38:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:38:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 03:38:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 03:38:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 03:38:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 03:38:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 03:38:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-28 03:38:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-28 03:38:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-28 03:38:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-28 03:38:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-28 03:38:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-28 03:38:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-28 03:38:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-28 03:38:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-28 03:38:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-28 03:38:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-28 03:38:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-28 03:38:12,357 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-28 03:38:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-28 03:38:12,357 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-28 03:38:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-28 03:38:12,357 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-28 03:38:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-28 03:38:12,357 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-28 03:38:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:38:12,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:38:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-28 03:38:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-28 03:38:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-28 03:38:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-28 03:38:12,689 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:38:12,693 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:38:15,008 INFO L? ?]: Removed 473 outVars from TransFormulas that were not future-live. [2024-11-28 03:38:15,008 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:38:15,061 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:38:15,062 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:38:15,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:38:15 BoogieIcfgContainer [2024-11-28 03:38:15,062 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:38:15,072 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:38:15,072 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:38:15,081 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:38:15,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:38:10" (1/3) ... [2024-11-28 03:38:15,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f2babad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:38:15, skipping insertion in model container [2024-11-28 03:38:15,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:38:11" (2/3) ... [2024-11-28 03:38:15,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f2babad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:38:15, skipping insertion in model container [2024-11-28 03:38:15,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:38:15" (3/3) ... [2024-11-28 03:38:15,084 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product28.cil.c [2024-11-28 03:38:15,112 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:38:15,116 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product28.cil.c that has 29 procedures, 605 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:38:15,242 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:38:15,264 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;@4ac9ba0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:38:15,264 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:38:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 605 states, 465 states have (on average 1.6688172043010752) internal successors, (776), 485 states have internal predecessors, (776), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-28 03:38:15,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 03:38:15,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:15,292 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-11-28 03:38:15,292 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:15,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:15,300 INFO L85 PathProgramCache]: Analyzing trace with hash 835264426, now seen corresponding path program 1 times [2024-11-28 03:38:15,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:15,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333198766] [2024-11-28 03:38:15,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:15,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:38:16,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:16,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333198766] [2024-11-28 03:38:16,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333198766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:16,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:16,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:38:16,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697925991] [2024-11-28 03:38:16,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:16,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:38:16,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:16,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:38:16,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:38:16,552 INFO L87 Difference]: Start difference. First operand has 605 states, 465 states have (on average 1.6688172043010752) internal successors, (776), 485 states have internal predecessors, (776), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 03:38:17,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:17,049 INFO L93 Difference]: Finished difference Result 1207 states and 2004 transitions. [2024-11-28 03:38:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:38:17,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2024-11-28 03:38:17,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:17,093 INFO L225 Difference]: With dead ends: 1207 [2024-11-28 03:38:17,093 INFO L226 Difference]: Without dead ends: 610 [2024-11-28 03:38:17,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:38:17,117 INFO L435 NwaCegarLoop]: 980 mSDtfsCounter, 91 mSDsluCounter, 4814 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5794 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:17,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5794 Invalid, 77 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:17,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2024-11-28 03:38:17,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2024-11-28 03:38:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 468 states have (on average 1.6602564102564104) internal successors, (777), 488 states have internal predecessors, (777), 111 states have call successors, (111), 28 states have call predecessors, (111), 28 states have return successors, (110), 105 states have call predecessors, (110), 108 states have call successors, (110) [2024-11-28 03:38:17,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 998 transitions. [2024-11-28 03:38:17,277 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 998 transitions. Word has length 67 [2024-11-28 03:38:17,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:17,279 INFO L471 AbstractCegarLoop]: Abstraction has 608 states and 998 transitions. [2024-11-28 03:38:17,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 03:38:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 998 transitions. [2024-11-28 03:38:17,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 03:38:17,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:17,291 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-11-28 03:38:17,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:38:17,292 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:17,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:17,293 INFO L85 PathProgramCache]: Analyzing trace with hash -351958820, now seen corresponding path program 1 times [2024-11-28 03:38:17,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:17,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262622799] [2024-11-28 03:38:17,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:17,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:38:17,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:17,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262622799] [2024-11-28 03:38:17,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262622799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:17,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:17,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:38:17,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187504530] [2024-11-28 03:38:17,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:17,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:17,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:17,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:17,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:38:17,652 INFO L87 Difference]: Start difference. First operand 608 states and 998 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 03:38:17,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:17,789 INFO L93 Difference]: Finished difference Result 1198 states and 1977 transitions. [2024-11-28 03:38:17,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:38:17,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2024-11-28 03:38:17,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:17,802 INFO L225 Difference]: With dead ends: 1198 [2024-11-28 03:38:17,802 INFO L226 Difference]: Without dead ends: 584 [2024-11-28 03:38:17,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:38:17,812 INFO L435 NwaCegarLoop]: 968 mSDtfsCounter, 14 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:17,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2899 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:38:17,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-28 03:38:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2024-11-28 03:38:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 447 states have (on average 1.651006711409396) internal successors, (738), 465 states have internal predecessors, (738), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-28 03:38:17,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 955 transitions. [2024-11-28 03:38:17,888 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 955 transitions. Word has length 68 [2024-11-28 03:38:17,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:17,888 INFO L471 AbstractCegarLoop]: Abstraction has 584 states and 955 transitions. [2024-11-28 03:38:17,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 03:38:17,889 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 955 transitions. [2024-11-28 03:38:17,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 03:38:17,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:17,893 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-11-28 03:38:17,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:38:17,894 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:17,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:17,894 INFO L85 PathProgramCache]: Analyzing trace with hash -229701840, now seen corresponding path program 1 times [2024-11-28 03:38:17,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:17,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953685840] [2024-11-28 03:38:17,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:17,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:38:18,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:18,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953685840] [2024-11-28 03:38:18,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953685840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:18,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:18,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:38:18,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062193422] [2024-11-28 03:38:18,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:18,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:38:18,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:18,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:38:18,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:38:18,445 INFO L87 Difference]: Start difference. First operand 584 states and 955 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 03:38:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:18,608 INFO L93 Difference]: Finished difference Result 1161 states and 1909 transitions. [2024-11-28 03:38:18,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:38:18,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2024-11-28 03:38:18,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:18,618 INFO L225 Difference]: With dead ends: 1161 [2024-11-28 03:38:18,619 INFO L226 Difference]: Without dead ends: 578 [2024-11-28 03:38:18,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:38:18,627 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 77 mSDsluCounter, 4650 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5594 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:18,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5594 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:18,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-11-28 03:38:18,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2024-11-28 03:38:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 441 states have (on average 1.6439909297052153) internal successors, (725), 459 states have internal predecessors, (725), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-28 03:38:18,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 942 transitions. [2024-11-28 03:38:18,685 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 942 transitions. Word has length 68 [2024-11-28 03:38:18,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:18,687 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 942 transitions. [2024-11-28 03:38:18,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 03:38:18,688 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 942 transitions. [2024-11-28 03:38:18,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 03:38:18,689 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:18,690 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-28 03:38:18,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:38:18,690 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:18,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:18,692 INFO L85 PathProgramCache]: Analyzing trace with hash 151788686, now seen corresponding path program 1 times [2024-11-28 03:38:18,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:18,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887078517] [2024-11-28 03:38:18,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:18,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:38:19,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:19,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887078517] [2024-11-28 03:38:19,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887078517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:19,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:19,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:38:19,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106729291] [2024-11-28 03:38:19,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:19,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:38:19,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:19,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:38:19,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:38:19,182 INFO L87 Difference]: Start difference. First operand 578 states and 942 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 03:38:19,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:19,311 INFO L93 Difference]: Finished difference Result 1149 states and 1883 transitions. [2024-11-28 03:38:19,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:38:19,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2024-11-28 03:38:19,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:19,321 INFO L225 Difference]: With dead ends: 1149 [2024-11-28 03:38:19,322 INFO L226 Difference]: Without dead ends: 572 [2024-11-28 03:38:19,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:38:19,330 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 63 mSDsluCounter, 4602 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5534 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:19,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5534 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:19,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-28 03:38:19,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-11-28 03:38:19,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 435 states have (on average 1.6367816091954024) internal successors, (712), 453 states have internal predecessors, (712), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-28 03:38:19,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 929 transitions. [2024-11-28 03:38:19,390 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 929 transitions. Word has length 69 [2024-11-28 03:38:19,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:19,391 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 929 transitions. [2024-11-28 03:38:19,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 03:38:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 929 transitions. [2024-11-28 03:38:19,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 03:38:19,394 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:19,394 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-28 03:38:19,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:38:19,395 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:19,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:19,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1871200492, now seen corresponding path program 1 times [2024-11-28 03:38:19,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:19,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563710402] [2024-11-28 03:38:19,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:19,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:19,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:38:19,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:19,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563710402] [2024-11-28 03:38:19,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563710402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:19,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:19,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:38:19,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058491701] [2024-11-28 03:38:19,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:19,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:38:19,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:19,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:38:19,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:38:19,734 INFO L87 Difference]: Start difference. First operand 572 states and 929 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 03:38:19,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:19,880 INFO L93 Difference]: Finished difference Result 1137 states and 1857 transitions. [2024-11-28 03:38:19,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:38:19,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2024-11-28 03:38:19,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:19,891 INFO L225 Difference]: With dead ends: 1137 [2024-11-28 03:38:19,891 INFO L226 Difference]: Without dead ends: 566 [2024-11-28 03:38:19,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:38:19,896 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 49 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5474 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:19,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5474 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:38:19,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-28 03:38:19,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-28 03:38:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6293706293706294) internal successors, (699), 447 states have internal predecessors, (699), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-28 03:38:19,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 916 transitions. [2024-11-28 03:38:19,938 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 916 transitions. Word has length 70 [2024-11-28 03:38:19,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:19,938 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 916 transitions. [2024-11-28 03:38:19,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 03:38:19,939 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 916 transitions. [2024-11-28 03:38:19,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 03:38:19,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:19,940 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-11-28 03:38:19,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:38:19,941 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:19,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:19,942 INFO L85 PathProgramCache]: Analyzing trace with hash -976310699, now seen corresponding path program 1 times [2024-11-28 03:38:19,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:19,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888277477] [2024-11-28 03:38:19,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:19,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:38:20,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:20,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888277477] [2024-11-28 03:38:20,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888277477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:20,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:20,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:38:20,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470588441] [2024-11-28 03:38:20,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:20,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:38:20,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:20,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:38:20,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:38:20,238 INFO L87 Difference]: Start difference. First operand 566 states and 916 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 03:38:20,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:20,401 INFO L93 Difference]: Finished difference Result 1125 states and 1831 transitions. [2024-11-28 03:38:20,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:38:20,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2024-11-28 03:38:20,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:20,409 INFO L225 Difference]: With dead ends: 1125 [2024-11-28 03:38:20,410 INFO L226 Difference]: Without dead ends: 566 [2024-11-28 03:38:20,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:38:20,416 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 24 mSDsluCounter, 4518 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5426 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:20,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5426 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:38:20,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-28 03:38:20,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-28 03:38:20,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.627039627039627) internal successors, (698), 447 states have internal predecessors, (698), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-28 03:38:20,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 915 transitions. [2024-11-28 03:38:20,462 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 915 transitions. Word has length 70 [2024-11-28 03:38:20,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:20,463 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 915 transitions. [2024-11-28 03:38:20,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 03:38:20,464 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 915 transitions. [2024-11-28 03:38:20,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 03:38:20,466 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:20,466 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:20,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:38:20,467 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:20,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:20,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1123649166, now seen corresponding path program 1 times [2024-11-28 03:38:20,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:20,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620613973] [2024-11-28 03:38:20,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:20,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:20,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:38:20,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:20,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620613973] [2024-11-28 03:38:20,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620613973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:20,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:20,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:38:20,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944366352] [2024-11-28 03:38:20,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:20,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:20,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:20,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:20,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:38:20,653 INFO L87 Difference]: Start difference. First operand 566 states and 915 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 03:38:20,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:20,753 INFO L93 Difference]: Finished difference Result 1116 states and 1816 transitions. [2024-11-28 03:38:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:38:20,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2024-11-28 03:38:20,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:20,762 INFO L225 Difference]: With dead ends: 1116 [2024-11-28 03:38:20,765 INFO L226 Difference]: Without dead ends: 566 [2024-11-28 03:38:20,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:38:20,770 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 15 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:20,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2685 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:38:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-28 03:38:20,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-28 03:38:20,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6247086247086246) internal successors, (697), 447 states have internal predecessors, (697), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-28 03:38:20,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 914 transitions. [2024-11-28 03:38:20,810 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 914 transitions. Word has length 71 [2024-11-28 03:38:20,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:20,811 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 914 transitions. [2024-11-28 03:38:20,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 03:38:20,811 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 914 transitions. [2024-11-28 03:38:20,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 03:38:20,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:20,815 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:20,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:38:20,816 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:20,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:20,816 INFO L85 PathProgramCache]: Analyzing trace with hash -713829452, now seen corresponding path program 1 times [2024-11-28 03:38:20,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:20,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784934896] [2024-11-28 03:38:20,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:20,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:20,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:38:20,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:20,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784934896] [2024-11-28 03:38:20,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784934896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:20,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:20,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:38:20,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712662875] [2024-11-28 03:38:20,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:20,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:20,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:20,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:20,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:38:20,979 INFO L87 Difference]: Start difference. First operand 566 states and 914 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 03:38:21,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:21,067 INFO L93 Difference]: Finished difference Result 1116 states and 1814 transitions. [2024-11-28 03:38:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:38:21,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2024-11-28 03:38:21,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:21,075 INFO L225 Difference]: With dead ends: 1116 [2024-11-28 03:38:21,075 INFO L226 Difference]: Without dead ends: 566 [2024-11-28 03:38:21,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:38:21,080 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 14 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:21,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2687 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:38:21,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-28 03:38:21,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-28 03:38:21,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6223776223776223) internal successors, (696), 447 states have internal predecessors, (696), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-28 03:38:21,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 913 transitions. [2024-11-28 03:38:21,114 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 913 transitions. Word has length 72 [2024-11-28 03:38:21,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:21,115 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 913 transitions. [2024-11-28 03:38:21,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 03:38:21,115 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 913 transitions. [2024-11-28 03:38:21,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 03:38:21,117 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:21,118 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:21,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:38:21,118 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:21,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:21,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1212770825, now seen corresponding path program 1 times [2024-11-28 03:38:21,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:21,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685034725] [2024-11-28 03:38:21,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:21,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:21,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:38:21,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:21,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685034725] [2024-11-28 03:38:21,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685034725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:21,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:21,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:38:21,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151585440] [2024-11-28 03:38:21,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:21,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:21,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:21,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:21,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:38:21,301 INFO L87 Difference]: Start difference. First operand 566 states and 913 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 03:38:21,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:21,393 INFO L93 Difference]: Finished difference Result 1116 states and 1812 transitions. [2024-11-28 03:38:21,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:38:21,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2024-11-28 03:38:21,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:21,402 INFO L225 Difference]: With dead ends: 1116 [2024-11-28 03:38:21,402 INFO L226 Difference]: Without dead ends: 566 [2024-11-28 03:38:21,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:38:21,434 INFO L435 NwaCegarLoop]: 902 mSDtfsCounter, 13 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:21,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2689 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:38:21,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-28 03:38:21,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-28 03:38:21,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6200466200466201) internal successors, (695), 447 states have internal predecessors, (695), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-28 03:38:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 912 transitions. [2024-11-28 03:38:21,467 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 912 transitions. Word has length 73 [2024-11-28 03:38:21,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:21,468 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 912 transitions. [2024-11-28 03:38:21,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 03:38:21,468 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 912 transitions. [2024-11-28 03:38:21,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 03:38:21,470 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:21,470 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:21,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:38:21,470 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:21,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:21,471 INFO L85 PathProgramCache]: Analyzing trace with hash 181465177, now seen corresponding path program 1 times [2024-11-28 03:38:21,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:21,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290707517] [2024-11-28 03:38:21,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:21,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:21,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:38:21,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:21,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290707517] [2024-11-28 03:38:21,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290707517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:21,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:21,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:38:21,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433116447] [2024-11-28 03:38:21,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:21,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:21,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:21,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:21,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:38:21,613 INFO L87 Difference]: Start difference. First operand 566 states and 912 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 03:38:21,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:21,686 INFO L93 Difference]: Finished difference Result 1116 states and 1810 transitions. [2024-11-28 03:38:21,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:38:21,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2024-11-28 03:38:21,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:21,694 INFO L225 Difference]: With dead ends: 1116 [2024-11-28 03:38:21,695 INFO L226 Difference]: Without dead ends: 566 [2024-11-28 03:38:21,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:38:21,700 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 12 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:21,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2691 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:38:21,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-28 03:38:21,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2024-11-28 03:38:21,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 429 states have (on average 1.6177156177156178) internal successors, (694), 447 states have internal predecessors, (694), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-28 03:38:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 911 transitions. [2024-11-28 03:38:21,734 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 911 transitions. Word has length 74 [2024-11-28 03:38:21,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:21,734 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 911 transitions. [2024-11-28 03:38:21,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 03:38:21,735 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 911 transitions. [2024-11-28 03:38:21,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 03:38:21,736 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:21,737 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:21,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:38:21,737 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:21,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:21,738 INFO L85 PathProgramCache]: Analyzing trace with hash 134657660, now seen corresponding path program 1 times [2024-11-28 03:38:21,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:21,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903859546] [2024-11-28 03:38:21,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:21,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:38:22,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:22,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903859546] [2024-11-28 03:38:22,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903859546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:22,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:22,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:38:22,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986525898] [2024-11-28 03:38:22,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:22,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:38:22,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:22,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:38:22,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:38:22,059 INFO L87 Difference]: Start difference. First operand 566 states and 911 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 03:38:23,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:23,317 INFO L93 Difference]: Finished difference Result 1607 states and 2616 transitions. [2024-11-28 03:38:23,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:38:23,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2024-11-28 03:38:23,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:23,335 INFO L225 Difference]: With dead ends: 1607 [2024-11-28 03:38:23,335 INFO L226 Difference]: Without dead ends: 1059 [2024-11-28 03:38:23,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:38:23,342 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 774 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 4281 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:23,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 4281 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:38:23,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2024-11-28 03:38:23,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1051. [2024-11-28 03:38:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 799 states have (on average 1.5832290362953692) internal successors, (1265), 833 states have internal predecessors, (1265), 202 states have call successors, (202), 53 states have call predecessors, (202), 49 states have return successors, (205), 191 states have call predecessors, (205), 198 states have call successors, (205) [2024-11-28 03:38:23,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1672 transitions. [2024-11-28 03:38:23,448 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1672 transitions. Word has length 75 [2024-11-28 03:38:23,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:23,449 INFO L471 AbstractCegarLoop]: Abstraction has 1051 states and 1672 transitions. [2024-11-28 03:38:23,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 03:38:23,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1672 transitions. [2024-11-28 03:38:23,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 03:38:23,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:23,453 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:23,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:38:23,454 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:23,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:23,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1527552892, now seen corresponding path program 1 times [2024-11-28 03:38:23,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:23,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200143997] [2024-11-28 03:38:23,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:23,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:23,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:38:23,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:23,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200143997] [2024-11-28 03:38:23,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200143997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:23,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47163033] [2024-11-28 03:38:23,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:23,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:23,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:23,799 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:23,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:38:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:24,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:38:24,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:24,440 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:24,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47163033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:24,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:24,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:38:24,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633574650] [2024-11-28 03:38:24,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:24,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:38:24,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:24,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:38:24,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:38:24,443 INFO L87 Difference]: Start difference. First operand 1051 states and 1672 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 03:38:24,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:24,620 INFO L93 Difference]: Finished difference Result 3031 states and 4888 transitions. [2024-11-28 03:38:24,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:38:24,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2024-11-28 03:38:24,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:24,646 INFO L225 Difference]: With dead ends: 3031 [2024-11-28 03:38:24,647 INFO L226 Difference]: Without dead ends: 1998 [2024-11-28 03:38:24,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:38:24,657 INFO L435 NwaCegarLoop]: 1602 mSDtfsCounter, 874 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:24,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 2406 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:38:24,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2024-11-28 03:38:24,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1937. [2024-11-28 03:38:24,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1480 states have (on average 1.6006756756756757) internal successors, (2369), 1548 states have internal predecessors, (2369), 363 states have call successors, (363), 96 states have call predecessors, (363), 93 states have return successors, (382), 346 states have call predecessors, (382), 359 states have call successors, (382) [2024-11-28 03:38:24,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 3114 transitions. [2024-11-28 03:38:24,825 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 3114 transitions. Word has length 75 [2024-11-28 03:38:24,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:24,828 INFO L471 AbstractCegarLoop]: Abstraction has 1937 states and 3114 transitions. [2024-11-28 03:38:24,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 03:38:24,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 3114 transitions. [2024-11-28 03:38:24,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 03:38:24,831 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:24,831 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:24,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:38:25,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:25,035 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:25,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:25,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1092140101, now seen corresponding path program 1 times [2024-11-28 03:38:25,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:25,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335167183] [2024-11-28 03:38:25,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:25,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:38:25,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:25,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335167183] [2024-11-28 03:38:25,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335167183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:25,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327960043] [2024-11-28 03:38:25,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:25,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:25,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:25,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:25,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:38:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:25,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:38:25,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:25,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:25,946 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:25,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327960043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:25,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:25,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:38:25,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922977676] [2024-11-28 03:38:25,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:25,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:38:25,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:25,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:38:25,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:38:25,950 INFO L87 Difference]: Start difference. First operand 1937 states and 3114 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 03:38:26,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:26,166 INFO L93 Difference]: Finished difference Result 4347 states and 7025 transitions. [2024-11-28 03:38:26,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:38:26,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2024-11-28 03:38:26,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:26,196 INFO L225 Difference]: With dead ends: 4347 [2024-11-28 03:38:26,197 INFO L226 Difference]: Without dead ends: 2428 [2024-11-28 03:38:26,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:38:26,212 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 872 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:26,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1711 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:38:26,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2024-11-28 03:38:26,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 2381. [2024-11-28 03:38:26,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 1822 states have (on average 1.6125137211855105) internal successors, (2938), 1907 states have internal predecessors, (2938), 444 states have call successors, (444), 116 states have call predecessors, (444), 114 states have return successors, (467), 425 states have call predecessors, (467), 440 states have call successors, (467) [2024-11-28 03:38:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3849 transitions. [2024-11-28 03:38:26,406 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3849 transitions. Word has length 76 [2024-11-28 03:38:26,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:26,407 INFO L471 AbstractCegarLoop]: Abstraction has 2381 states and 3849 transitions. [2024-11-28 03:38:26,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 03:38:26,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3849 transitions. [2024-11-28 03:38:26,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 03:38:26,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:26,408 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:26,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:38:26,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:26,609 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:26,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:26,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1658445235, now seen corresponding path program 1 times [2024-11-28 03:38:26,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:26,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985679801] [2024-11-28 03:38:26,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:26,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:38:26,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:26,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985679801] [2024-11-28 03:38:26,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985679801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:26,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:26,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:38:26,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304661280] [2024-11-28 03:38:26,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:26,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:38:26,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:26,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:38:26,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:38:26,879 INFO L87 Difference]: Start difference. First operand 2381 states and 3849 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 03:38:27,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:27,992 INFO L93 Difference]: Finished difference Result 7059 states and 11641 transitions. [2024-11-28 03:38:27,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:38:27,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2024-11-28 03:38:27,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:28,050 INFO L225 Difference]: With dead ends: 7059 [2024-11-28 03:38:28,051 INFO L226 Difference]: Without dead ends: 4696 [2024-11-28 03:38:28,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:38:28,071 INFO L435 NwaCegarLoop]: 1014 mSDtfsCounter, 907 mSDsluCounter, 3655 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:28,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 4669 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:38:28,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2024-11-28 03:38:28,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 4643. [2024-11-28 03:38:28,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4643 states, 3559 states have (on average 1.6119696543973026) internal successors, (5737), 3724 states have internal predecessors, (5737), 858 states have call successors, (858), 226 states have call predecessors, (858), 225 states have return successors, (1058), 828 states have call predecessors, (1058), 852 states have call successors, (1058) [2024-11-28 03:38:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4643 states to 4643 states and 7653 transitions. [2024-11-28 03:38:28,474 INFO L78 Accepts]: Start accepts. Automaton has 4643 states and 7653 transitions. Word has length 78 [2024-11-28 03:38:28,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:28,475 INFO L471 AbstractCegarLoop]: Abstraction has 4643 states and 7653 transitions. [2024-11-28 03:38:28,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 03:38:28,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4643 states and 7653 transitions. [2024-11-28 03:38:28,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-28 03:38:28,480 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:28,480 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:28,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:38:28,481 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:28,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:28,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1235674296, now seen corresponding path program 1 times [2024-11-28 03:38:28,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:28,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163949020] [2024-11-28 03:38:28,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:28,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:38:28,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:28,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163949020] [2024-11-28 03:38:28,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163949020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:28,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:28,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:38:28,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412207461] [2024-11-28 03:38:28,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:28,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:28,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:28,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:28,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:38:28,677 INFO L87 Difference]: Start difference. First operand 4643 states and 7653 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 03:38:29,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:29,091 INFO L93 Difference]: Finished difference Result 9292 states and 15439 transitions. [2024-11-28 03:38:29,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:38:29,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2024-11-28 03:38:29,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:29,152 INFO L225 Difference]: With dead ends: 9292 [2024-11-28 03:38:29,152 INFO L226 Difference]: Without dead ends: 4667 [2024-11-28 03:38:29,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:38:29,198 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 12 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:29,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2657 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:29,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4667 states. [2024-11-28 03:38:29,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4667 to 4651. [2024-11-28 03:38:29,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4651 states, 3565 states have (on average 1.6103786816269285) internal successors, (5741), 3730 states have internal predecessors, (5741), 858 states have call successors, (858), 230 states have call predecessors, (858), 227 states have return successors, (1046), 826 states have call predecessors, (1046), 852 states have call successors, (1046) [2024-11-28 03:38:29,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4651 states to 4651 states and 7645 transitions. [2024-11-28 03:38:29,667 INFO L78 Accepts]: Start accepts. Automaton has 4651 states and 7645 transitions. Word has length 79 [2024-11-28 03:38:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:29,668 INFO L471 AbstractCegarLoop]: Abstraction has 4651 states and 7645 transitions. [2024-11-28 03:38:29,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 03:38:29,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4651 states and 7645 transitions. [2024-11-28 03:38:29,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 03:38:29,670 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:29,670 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:29,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:38:29,671 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:29,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:29,671 INFO L85 PathProgramCache]: Analyzing trace with hash 628789887, now seen corresponding path program 1 times [2024-11-28 03:38:29,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:29,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432990818] [2024-11-28 03:38:29,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:29,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:38:30,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:30,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432990818] [2024-11-28 03:38:30,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432990818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:30,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:30,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:38:30,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514327110] [2024-11-28 03:38:30,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:30,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:38:30,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:30,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:38:30,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:38:30,018 INFO L87 Difference]: Start difference. First operand 4651 states and 7645 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 03:38:31,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:31,453 INFO L93 Difference]: Finished difference Result 13913 states and 23485 transitions. [2024-11-28 03:38:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:38:31,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2024-11-28 03:38:31,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:31,585 INFO L225 Difference]: With dead ends: 13913 [2024-11-28 03:38:31,585 INFO L226 Difference]: Without dead ends: 9280 [2024-11-28 03:38:31,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:38:31,610 INFO L435 NwaCegarLoop]: 980 mSDtfsCounter, 901 mSDsluCounter, 3562 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:31,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 4542 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:38:31,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9280 states. [2024-11-28 03:38:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9280 to 9211. [2024-11-28 03:38:32,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9211 states, 7066 states have (on average 1.6085479762241721) internal successors, (11366), 7391 states have internal predecessors, (11366), 1691 states have call successors, (1691), 454 states have call predecessors, (1691), 453 states have return successors, (2467), 1637 states have call predecessors, (2467), 1681 states have call successors, (2467) [2024-11-28 03:38:32,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9211 states to 9211 states and 15524 transitions. [2024-11-28 03:38:32,311 INFO L78 Accepts]: Start accepts. Automaton has 9211 states and 15524 transitions. Word has length 87 [2024-11-28 03:38:32,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:32,311 INFO L471 AbstractCegarLoop]: Abstraction has 9211 states and 15524 transitions. [2024-11-28 03:38:32,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 03:38:32,313 INFO L276 IsEmpty]: Start isEmpty. Operand 9211 states and 15524 transitions. [2024-11-28 03:38:32,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-28 03:38:32,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:32,315 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:32,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:38:32,315 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:32,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:32,316 INFO L85 PathProgramCache]: Analyzing trace with hash 136436638, now seen corresponding path program 1 times [2024-11-28 03:38:32,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:32,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669390915] [2024-11-28 03:38:32,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:32,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:38:32,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:32,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669390915] [2024-11-28 03:38:32,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669390915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:32,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:32,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:38:32,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009940768] [2024-11-28 03:38:32,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:32,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:32,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:32,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:32,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:38:32,555 INFO L87 Difference]: Start difference. First operand 9211 states and 15524 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 03:38:33,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:33,278 INFO L93 Difference]: Finished difference Result 18476 states and 31513 transitions. [2024-11-28 03:38:33,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:38:33,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2024-11-28 03:38:33,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:33,389 INFO L225 Difference]: With dead ends: 18476 [2024-11-28 03:38:33,389 INFO L226 Difference]: Without dead ends: 9283 [2024-11-28 03:38:33,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:38:33,449 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 12 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:33,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2651 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:33,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9283 states. [2024-11-28 03:38:34,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9283 to 9251. [2024-11-28 03:38:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9251 states, 7102 states have (on average 1.6060264714165025) internal successors, (11406), 7419 states have internal predecessors, (11406), 1691 states have call successors, (1691), 470 states have call predecessors, (1691), 457 states have return successors, (2449), 1633 states have call predecessors, (2449), 1681 states have call successors, (2449) [2024-11-28 03:38:34,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9251 states to 9251 states and 15546 transitions. [2024-11-28 03:38:34,219 INFO L78 Accepts]: Start accepts. Automaton has 9251 states and 15546 transitions. Word has length 88 [2024-11-28 03:38:34,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:34,221 INFO L471 AbstractCegarLoop]: Abstraction has 9251 states and 15546 transitions. [2024-11-28 03:38:34,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 03:38:34,222 INFO L276 IsEmpty]: Start isEmpty. Operand 9251 states and 15546 transitions. [2024-11-28 03:38:34,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 03:38:34,224 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:34,224 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:34,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:38:34,224 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:34,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:34,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1743002170, now seen corresponding path program 1 times [2024-11-28 03:38:34,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:34,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919180670] [2024-11-28 03:38:34,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:34,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:38:34,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:34,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919180670] [2024-11-28 03:38:34,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919180670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:34,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:34,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:38:34,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643284657] [2024-11-28 03:38:34,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:34,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:38:34,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:34,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:38:34,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:38:34,568 INFO L87 Difference]: Start difference. First operand 9251 states and 15546 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 03:38:36,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:36,666 INFO L93 Difference]: Finished difference Result 27781 states and 48585 transitions. [2024-11-28 03:38:36,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:38:36,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2024-11-28 03:38:36,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:36,947 INFO L225 Difference]: With dead ends: 27781 [2024-11-28 03:38:36,948 INFO L226 Difference]: Without dead ends: 18548 [2024-11-28 03:38:37,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:38:37,053 INFO L435 NwaCegarLoop]: 1014 mSDtfsCounter, 895 mSDsluCounter, 3671 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 4685 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:37,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 4685 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:38:37,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18548 states. [2024-11-28 03:38:38,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18548 to 18447. [2024-11-28 03:38:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18447 states, 14167 states have (on average 1.6035152114067903) internal successors, (22717), 14796 states have internal predecessors, (22717), 3362 states have call successors, (3362), 934 states have call predecessors, (3362), 917 states have return successors, (6132), 3260 states have call predecessors, (6132), 3344 states have call successors, (6132) [2024-11-28 03:38:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18447 states to 18447 states and 32211 transitions. [2024-11-28 03:38:38,439 INFO L78 Accepts]: Start accepts. Automaton has 18447 states and 32211 transitions. Word has length 97 [2024-11-28 03:38:38,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:38,439 INFO L471 AbstractCegarLoop]: Abstraction has 18447 states and 32211 transitions. [2024-11-28 03:38:38,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 03:38:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 18447 states and 32211 transitions. [2024-11-28 03:38:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 03:38:38,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:38,442 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:38,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:38:38,443 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:38,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1187374209, now seen corresponding path program 1 times [2024-11-28 03:38:38,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:38,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176516047] [2024-11-28 03:38:38,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:38,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 03:38:38,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:38,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176516047] [2024-11-28 03:38:38,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176516047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:38,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:38,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:38:38,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68802140] [2024-11-28 03:38:38,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:38,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:38,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:38,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:38,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:38:38,603 INFO L87 Difference]: Start difference. First operand 18447 states and 32211 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 03:38:39,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:39,718 INFO L93 Difference]: Finished difference Result 37020 states and 65963 transitions. [2024-11-28 03:38:39,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:38:39,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2024-11-28 03:38:39,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:39,944 INFO L225 Difference]: With dead ends: 37020 [2024-11-28 03:38:39,945 INFO L226 Difference]: Without dead ends: 18591 [2024-11-28 03:38:40,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:38:40,100 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 11 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:40,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2651 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:40,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18591 states. [2024-11-28 03:38:41,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18591 to 18527. [2024-11-28 03:38:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18527 states, 14239 states have (on average 1.6010253529039962) internal successors, (22797), 14868 states have internal predecessors, (22797), 3362 states have call successors, (3362), 950 states have call predecessors, (3362), 925 states have return successors, (6108), 3252 states have call predecessors, (6108), 3344 states have call successors, (6108) [2024-11-28 03:38:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18527 states to 18527 states and 32267 transitions. [2024-11-28 03:38:41,357 INFO L78 Accepts]: Start accepts. Automaton has 18527 states and 32267 transitions. Word has length 98 [2024-11-28 03:38:41,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:41,358 INFO L471 AbstractCegarLoop]: Abstraction has 18527 states and 32267 transitions. [2024-11-28 03:38:41,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 03:38:41,358 INFO L276 IsEmpty]: Start isEmpty. Operand 18527 states and 32267 transitions. [2024-11-28 03:38:41,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-28 03:38:41,362 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:41,362 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:41,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:38:41,363 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:41,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:41,363 INFO L85 PathProgramCache]: Analyzing trace with hash -690960538, now seen corresponding path program 1 times [2024-11-28 03:38:41,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:41,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728314094] [2024-11-28 03:38:41,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:41,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:38:41,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:41,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728314094] [2024-11-28 03:38:41,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728314094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:41,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:41,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:38:41,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299270969] [2024-11-28 03:38:41,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:41,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:38:41,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:41,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:38:41,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:38:41,887 INFO L87 Difference]: Start difference. First operand 18527 states and 32267 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 03:38:45,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:45,092 INFO L93 Difference]: Finished difference Result 55725 states and 103445 transitions. [2024-11-28 03:38:45,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:38:45,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2024-11-28 03:38:45,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:45,717 INFO L225 Difference]: With dead ends: 55725 [2024-11-28 03:38:45,718 INFO L226 Difference]: Without dead ends: 37216 [2024-11-28 03:38:45,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:38:45,977 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 893 mSDsluCounter, 3550 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 4520 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:45,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 4520 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:38:46,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37216 states. [2024-11-28 03:38:48,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37216 to 37051. [2024-11-28 03:38:48,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37051 states, 28480 states have (on average 1.5981741573033708) internal successors, (45516), 29733 states have internal predecessors, (45516), 6709 states have call successors, (6709), 1894 states have call predecessors, (6709), 1861 states have return successors, (16579), 6511 states have call predecessors, (16579), 6675 states have call successors, (16579) [2024-11-28 03:38:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37051 states to 37051 states and 68804 transitions. [2024-11-28 03:38:48,902 INFO L78 Accepts]: Start accepts. Automaton has 37051 states and 68804 transitions. Word has length 108 [2024-11-28 03:38:48,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:48,904 INFO L471 AbstractCegarLoop]: Abstraction has 37051 states and 68804 transitions. [2024-11-28 03:38:48,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 03:38:48,904 INFO L276 IsEmpty]: Start isEmpty. Operand 37051 states and 68804 transitions. [2024-11-28 03:38:48,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-28 03:38:48,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:48,907 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:48,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 03:38:48,908 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:48,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:48,910 INFO L85 PathProgramCache]: Analyzing trace with hash 548444199, now seen corresponding path program 1 times [2024-11-28 03:38:48,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:48,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412493163] [2024-11-28 03:38:48,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:48,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 03:38:49,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:49,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412493163] [2024-11-28 03:38:49,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412493163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:49,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:49,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:38:49,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592448676] [2024-11-28 03:38:49,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:49,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:38:49,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:49,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:38:49,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:38:49,306 INFO L87 Difference]: Start difference. First operand 37051 states and 68804 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 03:38:52,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:52,716 INFO L93 Difference]: Finished difference Result 74327 states and 142867 transitions. [2024-11-28 03:38:52,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:38:52,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2024-11-28 03:38:52,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:53,149 INFO L225 Difference]: With dead ends: 74327 [2024-11-28 03:38:53,150 INFO L226 Difference]: Without dead ends: 37246 [2024-11-28 03:38:53,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:38:53,580 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 10 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:53,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2651 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:38:53,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37246 states. [2024-11-28 03:38:55,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37246 to 37120. [2024-11-28 03:38:55,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37120 states, 28546 states have (on average 1.5951446787641002) internal successors, (45535), 29810 states have internal predecessors, (45535), 6698 states have call successors, (6698), 1907 states have call predecessors, (6698), 1875 states have return successors, (16427), 6488 states have call predecessors, (16427), 6664 states have call successors, (16427) [2024-11-28 03:38:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37120 states to 37120 states and 68660 transitions. [2024-11-28 03:38:56,356 INFO L78 Accepts]: Start accepts. Automaton has 37120 states and 68660 transitions. Word has length 109 [2024-11-28 03:38:56,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:56,357 INFO L471 AbstractCegarLoop]: Abstraction has 37120 states and 68660 transitions. [2024-11-28 03:38:56,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 03:38:56,357 INFO L276 IsEmpty]: Start isEmpty. Operand 37120 states and 68660 transitions. [2024-11-28 03:38:56,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-28 03:38:56,367 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:56,368 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:56,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 03:38:56,368 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:56,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:56,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1561887491, now seen corresponding path program 1 times [2024-11-28 03:38:56,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:56,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204355533] [2024-11-28 03:38:56,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:56,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 28 proven. 27 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 03:38:57,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:57,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204355533] [2024-11-28 03:38:57,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204355533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:57,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495116449] [2024-11-28 03:38:57,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:57,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:57,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:57,160 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:57,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:38:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:57,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 2411 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:38:57,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:57,871 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 03:38:57,871 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:57,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495116449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:57,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:57,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-28 03:38:57,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002364062] [2024-11-28 03:38:57,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:57,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:38:57,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:57,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:38:57,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:38:57,875 INFO L87 Difference]: Start difference. First operand 37120 states and 68660 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 03:39:00,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:00,916 INFO L93 Difference]: Finished difference Result 82806 states and 160114 transitions. [2024-11-28 03:39:00,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:39:00,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 190 [2024-11-28 03:39:00,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:01,848 INFO L225 Difference]: With dead ends: 82806 [2024-11-28 03:39:01,849 INFO L226 Difference]: Without dead ends: 59891 [2024-11-28 03:39:02,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:39:02,088 INFO L435 NwaCegarLoop]: 952 mSDtfsCounter, 900 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:02,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 1838 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:39:02,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59891 states. [2024-11-28 03:39:04,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59891 to 59647. [2024-11-28 03:39:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59647 states, 45987 states have (on average 1.608302346315263) internal successors, (73961), 47957 states have internal predecessors, (73961), 10632 states have call successors, (10632), 3011 states have call predecessors, (10632), 3027 states have return successors, (29031), 10436 states have call predecessors, (29031), 10582 states have call successors, (29031) [2024-11-28 03:39:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59647 states to 59647 states and 113624 transitions. [2024-11-28 03:39:05,752 INFO L78 Accepts]: Start accepts. Automaton has 59647 states and 113624 transitions. Word has length 190 [2024-11-28 03:39:05,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:05,753 INFO L471 AbstractCegarLoop]: Abstraction has 59647 states and 113624 transitions. [2024-11-28 03:39:05,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 03:39:05,753 INFO L276 IsEmpty]: Start isEmpty. Operand 59647 states and 113624 transitions. [2024-11-28 03:39:05,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-28 03:39:05,765 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:05,765 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:05,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:39:05,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:05,966 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:05,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:05,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2139746007, now seen corresponding path program 1 times [2024-11-28 03:39:05,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:05,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274740652] [2024-11-28 03:39:05,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:05,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 27 proven. 26 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 03:39:06,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:06,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274740652] [2024-11-28 03:39:06,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274740652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:06,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726834761] [2024-11-28 03:39:06,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:06,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:06,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:06,395 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:06,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7821b685-1004-46fd-a84f-91eaa83d97a0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:39:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:07,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 2410 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:39:07,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 03:39:07,738 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:07,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726834761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:07,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:07,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-28 03:39:07,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695218063] [2024-11-28 03:39:07,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:07,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:39:07,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:07,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:39:07,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:39:07,740 INFO L87 Difference]: Start difference. First operand 59647 states and 113624 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-11-28 03:39:21,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:21,712 INFO L93 Difference]: Finished difference Result 168665 states and 337005 transitions. [2024-11-28 03:39:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:39:21,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 189 [2024-11-28 03:39:21,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:23,377 INFO L225 Difference]: With dead ends: 168665 [2024-11-28 03:39:23,378 INFO L226 Difference]: Without dead ends: 109036 [2024-11-28 03:39:24,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:39:24,035 INFO L435 NwaCegarLoop]: 645 mSDtfsCounter, 2549 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 6873 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2731 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 7401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 6873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:24,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2731 Valid, 2597 Invalid, 7401 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [528 Valid, 6873 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-28 03:39:24,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109036 states.