./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.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_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/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_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/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_21ce0ed5-c22b-4331-8307-0acf2c075a2f/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 0792bb078b549cb8c62d642eddb09d42b03fb2451c67a454a8e8576be6796f29 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:12:43,604 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:12:43,681 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:12:43,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:12:43,687 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:12:43,728 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:12:43,730 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:12:43,730 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:12:43,731 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:12:43,731 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:12:43,731 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:12:43,731 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:12:43,732 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:12:43,732 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:12:43,732 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:12:43,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:12:43,732 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:12:43,732 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:12:43,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:12:43,732 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:12:43,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:12:43,733 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:12:43,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:12:43,733 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:12:43,733 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:12:43,733 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:12:43,733 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:12:43,733 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:12:43,733 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:12:43,733 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:12:43,733 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:12:43,733 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:12:43,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:12:43,735 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:12:43,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:12:43,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:12:43,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:12:43,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:12:43,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:12:43,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:12:43,736 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:12:43,736 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:12:43,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:12:43,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:12:43,737 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:12:43,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:12:43,737 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:12:43,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:12:43,738 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_21ce0ed5-c22b-4331-8307-0acf2c075a2f/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 -> 0792bb078b549cb8c62d642eddb09d42b03fb2451c67a454a8e8576be6796f29 [2024-11-28 02:12:44,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:12:44,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:12:44,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:12:44,081 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:12:44,083 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:12:44,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c [2024-11-28 02:12:47,069 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/data/f046baf8b/aed9aec9f2604adc8c340fa40981002d/FLAG7fbf0e343 [2024-11-28 02:12:47,403 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:12:47,404 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c [2024-11-28 02:12:47,437 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/data/f046baf8b/aed9aec9f2604adc8c340fa40981002d/FLAG7fbf0e343 [2024-11-28 02:12:47,656 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/data/f046baf8b/aed9aec9f2604adc8c340fa40981002d [2024-11-28 02:12:47,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:12:47,660 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:12:47,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:12:47,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:12:47,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:12:47,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:12:47" (1/1) ... [2024-11-28 02:12:47,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fd08a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:47, skipping insertion in model container [2024-11-28 02:12:47,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:12:47" (1/1) ... [2024-11-28 02:12:47,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:12:47,899 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_21ce0ed5-c22b-4331-8307-0acf2c075a2f/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c[914,927] [2024-11-28 02:12:47,984 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_21ce0ed5-c22b-4331-8307-0acf2c075a2f/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c[7115,7128] [2024-11-28 02:12:48,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:12:48,075 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:12:48,085 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_21ce0ed5-c22b-4331-8307-0acf2c075a2f/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c[914,927] [2024-11-28 02:12:48,124 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_21ce0ed5-c22b-4331-8307-0acf2c075a2f/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c[7115,7128] [2024-11-28 02:12:48,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:12:48,174 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:12:48,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48 WrapperNode [2024-11-28 02:12:48,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:12:48,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:12:48,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:12:48,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:12:48,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,194 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,225 INFO L138 Inliner]: procedures = 57, calls = 63, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 459 [2024-11-28 02:12:48,225 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:12:48,226 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:12:48,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:12:48,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:12:48,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,237 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,258 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:12:48,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,259 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,271 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,272 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,290 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,291 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,294 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:12:48,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:12:48,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:12:48,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:12:48,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (1/1) ... [2024-11-28 02:12:48,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:12:48,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:48,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:12:48,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:12:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:12:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-28 02:12:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-28 02:12:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-28 02:12:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-28 02:12:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-28 02:12:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-28 02:12:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-28 02:12:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-28 02:12:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-28 02:12:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-28 02:12:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-28 02:12:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-28 02:12:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-28 02:12:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-28 02:12:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-28 02:12:48,367 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-28 02:12:48,367 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-28 02:12:48,367 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-28 02:12:48,369 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-28 02:12:48,369 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-28 02:12:48,369 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-28 02:12:48,369 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-28 02:12:48,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:12:48,372 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-28 02:12:48,372 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-28 02:12:48,372 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-28 02:12:48,372 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-28 02:12:48,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:12:48,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:12:48,373 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-28 02:12:48,373 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-28 02:12:48,495 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:12:48,497 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:12:49,108 INFO L? ?]: Removed 67 outVars from TransFormulas that were not future-live. [2024-11-28 02:12:49,108 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:12:49,130 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:12:49,133 INFO L312 CfgBuilder]: Removed 18 assume(true) statements. [2024-11-28 02:12:49,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:12:49 BoogieIcfgContainer [2024-11-28 02:12:49,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:12:49,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:12:49,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:12:49,143 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:12:49,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:12:47" (1/3) ... [2024-11-28 02:12:49,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135e9035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:12:49, skipping insertion in model container [2024-11-28 02:12:49,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:12:48" (2/3) ... [2024-11-28 02:12:49,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135e9035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:12:49, skipping insertion in model container [2024-11-28 02:12:49,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:12:49" (3/3) ... [2024-11-28 02:12:49,147 INFO L128 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.02.cil-1.c [2024-11-28 02:12:49,191 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:12:49,194 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pc_sfifo_2.cil-1+token_ring.02.cil-1.c that has 15 procedures, 227 locations, 1 initial locations, 9 loop locations, and 2 error locations. [2024-11-28 02:12:49,272 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:12:49,287 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;@3c3f834c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:12:49,287 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 02:12:49,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 182 states have (on average 1.554945054945055) internal successors, (283), 186 states have internal predecessors, (283), 30 states have call successors, (30), 14 states have call predecessors, (30), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-28 02:12:49,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:12:49,306 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:49,308 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:49,308 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:49,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:49,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1393590794, now seen corresponding path program 1 times [2024-11-28 02:12:49,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:49,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629167380] [2024-11-28 02:12:49,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:49,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:49,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:49,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629167380] [2024-11-28 02:12:49,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629167380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:49,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:49,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:12:49,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328961382] [2024-11-28 02:12:49,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:49,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:12:49,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:49,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:12:49,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:49,710 INFO L87 Difference]: Start difference. First operand has 227 states, 182 states have (on average 1.554945054945055) internal successors, (283), 186 states have internal predecessors, (283), 30 states have call successors, (30), 14 states have call predecessors, (30), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:12:49,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:49,812 INFO L93 Difference]: Finished difference Result 437 states and 659 transitions. [2024-11-28 02:12:49,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:12:49,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-28 02:12:49,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:49,825 INFO L225 Difference]: With dead ends: 437 [2024-11-28 02:12:49,827 INFO L226 Difference]: Without dead ends: 217 [2024-11-28 02:12:49,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:49,835 INFO L435 NwaCegarLoop]: 317 mSDtfsCounter, 127 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:49,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 505 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:49,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-28 02:12:49,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2024-11-28 02:12:49,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 172 states have (on average 1.4651162790697674) internal successors, (252), 176 states have internal predecessors, (252), 30 states have call successors, (30), 14 states have call predecessors, (30), 13 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-28 02:12:49,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 310 transitions. [2024-11-28 02:12:49,894 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 310 transitions. Word has length 62 [2024-11-28 02:12:49,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:49,896 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 310 transitions. [2024-11-28 02:12:49,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:12:49,898 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 310 transitions. [2024-11-28 02:12:49,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:12:49,901 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:49,901 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:49,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:12:49,901 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:49,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:49,908 INFO L85 PathProgramCache]: Analyzing trace with hash 949690120, now seen corresponding path program 1 times [2024-11-28 02:12:49,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:49,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293552838] [2024-11-28 02:12:49,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:49,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:50,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:50,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293552838] [2024-11-28 02:12:50,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293552838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:50,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:50,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:12:50,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643041133] [2024-11-28 02:12:50,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:50,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:12:50,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:50,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:12:50,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:12:50,197 INFO L87 Difference]: Start difference. First operand 217 states and 310 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:12:50,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:50,919 INFO L93 Difference]: Finished difference Result 400 states and 570 transitions. [2024-11-28 02:12:50,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:12:50,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-28 02:12:50,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:50,928 INFO L225 Difference]: With dead ends: 400 [2024-11-28 02:12:50,928 INFO L226 Difference]: Without dead ends: 316 [2024-11-28 02:12:50,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:50,930 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 270 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:50,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 686 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:12:50,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-28 02:12:50,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 309. [2024-11-28 02:12:50,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 244 states have (on average 1.4426229508196722) internal successors, (352), 250 states have internal predecessors, (352), 41 states have call successors, (41), 21 states have call predecessors, (41), 22 states have return successors, (44), 40 states have call predecessors, (44), 39 states have call successors, (44) [2024-11-28 02:12:50,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 437 transitions. [2024-11-28 02:12:50,995 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 437 transitions. Word has length 62 [2024-11-28 02:12:50,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:50,996 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 437 transitions. [2024-11-28 02:12:50,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:12:50,996 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 437 transitions. [2024-11-28 02:12:51,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:12:51,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:51,001 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:51,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:12:51,001 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:51,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:51,008 INFO L85 PathProgramCache]: Analyzing trace with hash 667851401, now seen corresponding path program 1 times [2024-11-28 02:12:51,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:51,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649826567] [2024-11-28 02:12:51,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:51,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:51,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:51,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:51,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649826567] [2024-11-28 02:12:51,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649826567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:51,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:51,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:12:51,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462029748] [2024-11-28 02:12:51,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:51,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:12:51,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:51,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:12:51,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:51,189 INFO L87 Difference]: Start difference. First operand 309 states and 437 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:12:51,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:51,260 INFO L93 Difference]: Finished difference Result 483 states and 677 transitions. [2024-11-28 02:12:51,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:12:51,261 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2024-11-28 02:12:51,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:51,264 INFO L225 Difference]: With dead ends: 483 [2024-11-28 02:12:51,264 INFO L226 Difference]: Without dead ends: 314 [2024-11-28 02:12:51,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:51,266 INFO L435 NwaCegarLoop]: 307 mSDtfsCounter, 0 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:51,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1530 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:51,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-28 02:12:51,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2024-11-28 02:12:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 248 states have (on average 1.4314516129032258) internal successors, (355), 254 states have internal predecessors, (355), 41 states have call successors, (41), 21 states have call predecessors, (41), 23 states have return successors, (45), 41 states have call predecessors, (45), 39 states have call successors, (45) [2024-11-28 02:12:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 441 transitions. [2024-11-28 02:12:51,304 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 441 transitions. Word has length 62 [2024-11-28 02:12:51,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:51,305 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 441 transitions. [2024-11-28 02:12:51,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:12:51,305 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 441 transitions. [2024-11-28 02:12:51,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:12:51,308 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:51,308 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:51,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:12:51,308 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:51,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:51,309 INFO L85 PathProgramCache]: Analyzing trace with hash -176154101, now seen corresponding path program 1 times [2024-11-28 02:12:51,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:51,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543123810] [2024-11-28 02:12:51,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:51,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:51,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:51,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543123810] [2024-11-28 02:12:51,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543123810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:51,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:51,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:12:51,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559294561] [2024-11-28 02:12:51,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:51,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:12:51,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:51,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:12:51,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:51,465 INFO L87 Difference]: Start difference. First operand 314 states and 441 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 02:12:52,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:52,362 INFO L93 Difference]: Finished difference Result 1595 states and 2222 transitions. [2024-11-28 02:12:52,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:12:52,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 62 [2024-11-28 02:12:52,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:52,373 INFO L225 Difference]: With dead ends: 1595 [2024-11-28 02:12:52,373 INFO L226 Difference]: Without dead ends: 1421 [2024-11-28 02:12:52,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:12:52,376 INFO L435 NwaCegarLoop]: 516 mSDtfsCounter, 1167 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:52,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1508 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:12:52,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2024-11-28 02:12:52,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1325. [2024-11-28 02:12:52,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1037 states have (on average 1.3645130183220828) internal successors, (1415), 1057 states have internal predecessors, (1415), 151 states have call successors, (151), 117 states have call predecessors, (151), 135 states have return successors, (209), 153 states have call predecessors, (209), 149 states have call successors, (209) [2024-11-28 02:12:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1775 transitions. [2024-11-28 02:12:52,584 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1775 transitions. Word has length 62 [2024-11-28 02:12:52,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:52,585 INFO L471 AbstractCegarLoop]: Abstraction has 1325 states and 1775 transitions. [2024-11-28 02:12:52,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 02:12:52,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1775 transitions. [2024-11-28 02:12:52,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:12:52,588 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:52,589 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:52,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:12:52,590 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:52,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash 742820522, now seen corresponding path program 1 times [2024-11-28 02:12:52,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:52,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720810905] [2024-11-28 02:12:52,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:52,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:52,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:52,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:52,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720810905] [2024-11-28 02:12:52,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720810905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:52,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:52,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:12:52,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813229025] [2024-11-28 02:12:52,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:52,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:12:52,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:52,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:12:52,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:52,754 INFO L87 Difference]: Start difference. First operand 1325 states and 1775 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:12:52,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:52,937 INFO L93 Difference]: Finished difference Result 2540 states and 3419 transitions. [2024-11-28 02:12:52,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:12:52,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2024-11-28 02:12:52,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:52,951 INFO L225 Difference]: With dead ends: 2540 [2024-11-28 02:12:52,952 INFO L226 Difference]: Without dead ends: 1355 [2024-11-28 02:12:52,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:52,958 INFO L435 NwaCegarLoop]: 307 mSDtfsCounter, 0 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:52,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1530 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:52,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2024-11-28 02:12:53,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1355. [2024-11-28 02:12:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1061 states have (on average 1.3468426013195098) internal successors, (1429), 1081 states have internal predecessors, (1429), 151 states have call successors, (151), 117 states have call predecessors, (151), 141 states have return successors, (221), 159 states have call predecessors, (221), 149 states have call successors, (221) [2024-11-28 02:12:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 1801 transitions. [2024-11-28 02:12:53,167 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 1801 transitions. Word has length 62 [2024-11-28 02:12:53,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:53,167 INFO L471 AbstractCegarLoop]: Abstraction has 1355 states and 1801 transitions. [2024-11-28 02:12:53,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:12:53,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 1801 transitions. [2024-11-28 02:12:53,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:12:53,169 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:53,169 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:53,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:12:53,169 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:53,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:53,170 INFO L85 PathProgramCache]: Analyzing trace with hash 804860136, now seen corresponding path program 1 times [2024-11-28 02:12:53,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:53,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213239707] [2024-11-28 02:12:53,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:53,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:53,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:53,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213239707] [2024-11-28 02:12:53,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213239707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:53,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:53,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:12:53,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642788675] [2024-11-28 02:12:53,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:53,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:12:53,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:53,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:12:53,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:53,404 INFO L87 Difference]: Start difference. First operand 1355 states and 1801 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:12:54,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:54,317 INFO L93 Difference]: Finished difference Result 3402 states and 4481 transitions. [2024-11-28 02:12:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:12:54,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-28 02:12:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:54,331 INFO L225 Difference]: With dead ends: 3402 [2024-11-28 02:12:54,331 INFO L226 Difference]: Without dead ends: 2189 [2024-11-28 02:12:54,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:12:54,336 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 460 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:54,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 710 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:12:54,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2024-11-28 02:12:54,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2013. [2024-11-28 02:12:54,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2013 states, 1573 states have (on average 1.326128417037508) internal successors, (2086), 1612 states have internal predecessors, (2086), 218 states have call successors, (218), 173 states have call predecessors, (218), 220 states have return successors, (353), 231 states have call predecessors, (353), 216 states have call successors, (353) [2024-11-28 02:12:54,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 2657 transitions. [2024-11-28 02:12:54,530 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 2657 transitions. Word has length 62 [2024-11-28 02:12:54,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:54,530 INFO L471 AbstractCegarLoop]: Abstraction has 2013 states and 2657 transitions. [2024-11-28 02:12:54,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:12:54,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 2657 transitions. [2024-11-28 02:12:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:12:54,532 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:54,532 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:54,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:12:54,532 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:54,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:54,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1227561962, now seen corresponding path program 1 times [2024-11-28 02:12:54,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:54,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223755034] [2024-11-28 02:12:54,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:54,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:54,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:54,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223755034] [2024-11-28 02:12:54,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223755034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:54,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:54,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:12:54,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136106038] [2024-11-28 02:12:54,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:54,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:12:54,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:54,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:12:54,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:12:54,631 INFO L87 Difference]: Start difference. First operand 2013 states and 2657 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:12:55,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:55,315 INFO L93 Difference]: Finished difference Result 5453 states and 7206 transitions. [2024-11-28 02:12:55,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:12:55,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-28 02:12:55,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:55,340 INFO L225 Difference]: With dead ends: 5453 [2024-11-28 02:12:55,340 INFO L226 Difference]: Without dead ends: 3589 [2024-11-28 02:12:55,346 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:12:55,347 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 417 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:55,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 356 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:12:55,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2024-11-28 02:12:55,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 3585. [2024-11-28 02:12:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 2782 states have (on average 1.2904385334291877) internal successors, (3590), 2852 states have internal predecessors, (3590), 387 states have call successors, (387), 318 states have call predecessors, (387), 414 states have return successors, (699), 418 states have call predecessors, (699), 385 states have call successors, (699) [2024-11-28 02:12:55,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 4676 transitions. [2024-11-28 02:12:55,696 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 4676 transitions. Word has length 62 [2024-11-28 02:12:55,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:55,697 INFO L471 AbstractCegarLoop]: Abstraction has 3585 states and 4676 transitions. [2024-11-28 02:12:55,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:12:55,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 4676 transitions. [2024-11-28 02:12:55,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 02:12:55,699 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:55,699 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:55,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:12:55,700 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:55,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:55,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1692388000, now seen corresponding path program 1 times [2024-11-28 02:12:55,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:55,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295346690] [2024-11-28 02:12:55,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:55,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:55,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:55,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295346690] [2024-11-28 02:12:55,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295346690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:55,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:55,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:12:55,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266835122] [2024-11-28 02:12:55,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:55,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:12:55,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:55,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:12:55,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:55,764 INFO L87 Difference]: Start difference. First operand 3585 states and 4676 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:12:56,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:56,229 INFO L93 Difference]: Finished difference Result 9419 states and 12374 transitions. [2024-11-28 02:12:56,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:12:56,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2024-11-28 02:12:56,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:56,266 INFO L225 Difference]: With dead ends: 9419 [2024-11-28 02:12:56,267 INFO L226 Difference]: Without dead ends: 5962 [2024-11-28 02:12:56,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:12:56,277 INFO L435 NwaCegarLoop]: 325 mSDtfsCounter, 101 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:56,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 601 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:56,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5962 states. [2024-11-28 02:12:56,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5962 to 5816. [2024-11-28 02:12:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5816 states, 4463 states have (on average 1.2814250504145195) internal successors, (5719), 4558 states have internal predecessors, (5719), 653 states have call successors, (653), 550 states have call predecessors, (653), 698 states have return successors, (1171), 711 states have call predecessors, (1171), 651 states have call successors, (1171) [2024-11-28 02:12:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5816 states to 5816 states and 7543 transitions. [2024-11-28 02:12:56,796 INFO L78 Accepts]: Start accepts. Automaton has 5816 states and 7543 transitions. Word has length 63 [2024-11-28 02:12:56,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:56,797 INFO L471 AbstractCegarLoop]: Abstraction has 5816 states and 7543 transitions. [2024-11-28 02:12:56,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:12:56,797 INFO L276 IsEmpty]: Start isEmpty. Operand 5816 states and 7543 transitions. [2024-11-28 02:12:56,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:12:56,799 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:56,799 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:56,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:12:56,800 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:56,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:56,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1052399090, now seen corresponding path program 1 times [2024-11-28 02:12:56,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:56,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397115207] [2024-11-28 02:12:56,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:56,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:56,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:56,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397115207] [2024-11-28 02:12:56,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397115207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:56,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:56,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:12:56,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493957108] [2024-11-28 02:12:56,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:56,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:12:56,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:56,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:12:56,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:12:56,912 INFO L87 Difference]: Start difference. First operand 5816 states and 7543 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 02:12:57,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:57,711 INFO L93 Difference]: Finished difference Result 6946 states and 8946 transitions. [2024-11-28 02:12:57,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:12:57,712 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2024-11-28 02:12:57,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:57,758 INFO L225 Difference]: With dead ends: 6946 [2024-11-28 02:12:57,759 INFO L226 Difference]: Without dead ends: 6943 [2024-11-28 02:12:57,763 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 02:12:57,765 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 563 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:57,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 410 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:12:57,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6943 states. [2024-11-28 02:12:58,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6943 to 6844. [2024-11-28 02:12:58,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6844 states, 5234 states have (on average 1.2730225448987391) internal successors, (6663), 5344 states have internal predecessors, (6663), 779 states have call successors, (779), 664 states have call predecessors, (779), 829 states have return successors, (1376), 839 states have call predecessors, (1376), 778 states have call successors, (1376) [2024-11-28 02:12:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6844 states to 6844 states and 8818 transitions. [2024-11-28 02:12:58,489 INFO L78 Accepts]: Start accepts. Automaton has 6844 states and 8818 transitions. Word has length 68 [2024-11-28 02:12:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:58,489 INFO L471 AbstractCegarLoop]: Abstraction has 6844 states and 8818 transitions. [2024-11-28 02:12:58,489 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 02:12:58,490 INFO L276 IsEmpty]: Start isEmpty. Operand 6844 states and 8818 transitions. [2024-11-28 02:12:58,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 02:12:58,492 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:58,492 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:58,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:12:58,492 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:58,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:58,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1736059905, now seen corresponding path program 1 times [2024-11-28 02:12:58,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:58,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84512807] [2024-11-28 02:12:58,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:58,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:58,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:58,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84512807] [2024-11-28 02:12:58,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84512807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:12:58,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095295977] [2024-11-28 02:12:58,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:58,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:58,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:12:58,654 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:12:58,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:12:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:58,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:12:58,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:12:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:59,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:12:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:59,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095295977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:12:59,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:12:59,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-28 02:12:59,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154905983] [2024-11-28 02:12:59,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:12:59,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:12:59,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:59,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:12:59,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:12:59,245 INFO L87 Difference]: Start difference. First operand 6844 states and 8818 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 02:13:00,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:00,857 INFO L93 Difference]: Finished difference Result 14563 states and 18644 transitions. [2024-11-28 02:13:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:13:00,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 69 [2024-11-28 02:13:00,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:00,934 INFO L225 Difference]: With dead ends: 14563 [2024-11-28 02:13:00,935 INFO L226 Difference]: Without dead ends: 14560 [2024-11-28 02:13:00,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:13:00,942 INFO L435 NwaCegarLoop]: 487 mSDtfsCounter, 858 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:00,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 1637 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:13:00,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14560 states. [2024-11-28 02:13:02,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14560 to 13246. [2024-11-28 02:13:02,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13246 states, 10139 states have (on average 1.2699477266002563) internal successors, (12876), 10350 states have internal predecessors, (12876), 1487 states have call successors, (1487), 1277 states have call predecessors, (1487), 1618 states have return successors, (2652), 1622 states have call predecessors, (2652), 1486 states have call successors, (2652) [2024-11-28 02:13:02,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13246 states to 13246 states and 17015 transitions. [2024-11-28 02:13:02,667 INFO L78 Accepts]: Start accepts. Automaton has 13246 states and 17015 transitions. Word has length 69 [2024-11-28 02:13:02,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:02,667 INFO L471 AbstractCegarLoop]: Abstraction has 13246 states and 17015 transitions. [2024-11-28 02:13:02,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 02:13:02,668 INFO L276 IsEmpty]: Start isEmpty. Operand 13246 states and 17015 transitions. [2024-11-28 02:13:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:13:02,671 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:02,671 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:02,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:13:02,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:13:02,872 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:02,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:02,873 INFO L85 PathProgramCache]: Analyzing trace with hash 354938301, now seen corresponding path program 1 times [2024-11-28 02:13:02,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:02,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491507828] [2024-11-28 02:13:02,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:02,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:02,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:02,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:02,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491507828] [2024-11-28 02:13:02,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491507828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:02,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:02,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:13:02,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112915848] [2024-11-28 02:13:02,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:02,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:13:02,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:02,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:13:02,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:13:02,966 INFO L87 Difference]: Start difference. First operand 13246 states and 17015 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:04,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:04,512 INFO L93 Difference]: Finished difference Result 13484 states and 17369 transitions. [2024-11-28 02:13:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:13:04,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-28 02:13:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:04,590 INFO L225 Difference]: With dead ends: 13484 [2024-11-28 02:13:04,590 INFO L226 Difference]: Without dead ends: 13369 [2024-11-28 02:13:04,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:13:04,597 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 461 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:04,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 665 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:13:04,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13369 states. [2024-11-28 02:13:05,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13369 to 13360. [2024-11-28 02:13:05,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13360 states, 10235 states have (on average 1.2721055202735712) internal successors, (13020), 10447 states have internal predecessors, (13020), 1498 states have call successors, (1498), 1283 states have call predecessors, (1498), 1625 states have return successors, (2664), 1633 states have call predecessors, (2664), 1497 states have call successors, (2664) [2024-11-28 02:13:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13360 states to 13360 states and 17182 transitions. [2024-11-28 02:13:05,930 INFO L78 Accepts]: Start accepts. Automaton has 13360 states and 17182 transitions. Word has length 66 [2024-11-28 02:13:05,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:05,930 INFO L471 AbstractCegarLoop]: Abstraction has 13360 states and 17182 transitions. [2024-11-28 02:13:05,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:05,930 INFO L276 IsEmpty]: Start isEmpty. Operand 13360 states and 17182 transitions. [2024-11-28 02:13:05,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:13:05,933 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:05,933 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:05,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:13:05,934 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:05,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:05,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1006599359, now seen corresponding path program 1 times [2024-11-28 02:13:05,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:05,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342517752] [2024-11-28 02:13:05,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:05,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:06,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:06,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:06,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342517752] [2024-11-28 02:13:06,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342517752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:06,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:06,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:13:06,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170618421] [2024-11-28 02:13:06,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:06,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:13:06,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:06,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:13:06,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:13:06,062 INFO L87 Difference]: Start difference. First operand 13360 states and 17182 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:08,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:08,504 INFO L93 Difference]: Finished difference Result 13729 states and 17728 transitions. [2024-11-28 02:13:08,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:13:08,505 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-28 02:13:08,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:08,575 INFO L225 Difference]: With dead ends: 13729 [2024-11-28 02:13:08,575 INFO L226 Difference]: Without dead ends: 13500 [2024-11-28 02:13:08,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:13:08,585 INFO L435 NwaCegarLoop]: 285 mSDtfsCounter, 451 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:08,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1071 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:13:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13500 states. [2024-11-28 02:13:10,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13500 to 13467. [2024-11-28 02:13:10,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13467 states, 10324 states have (on average 1.2737311119721038) internal successors, (13150), 10537 states have internal predecessors, (13150), 1509 states have call successors, (1509), 1289 states have call predecessors, (1509), 1632 states have return successors, (2678), 1645 states have call predecessors, (2678), 1508 states have call successors, (2678) [2024-11-28 02:13:10,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13467 states to 13467 states and 17337 transitions. [2024-11-28 02:13:10,067 INFO L78 Accepts]: Start accepts. Automaton has 13467 states and 17337 transitions. Word has length 66 [2024-11-28 02:13:10,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:10,067 INFO L471 AbstractCegarLoop]: Abstraction has 13467 states and 17337 transitions. [2024-11-28 02:13:10,068 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:10,068 INFO L276 IsEmpty]: Start isEmpty. Operand 13467 states and 17337 transitions. [2024-11-28 02:13:10,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:13:10,070 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:10,070 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:10,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:13:10,070 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:10,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:10,071 INFO L85 PathProgramCache]: Analyzing trace with hash 531740671, now seen corresponding path program 1 times [2024-11-28 02:13:10,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:10,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88800003] [2024-11-28 02:13:10,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:10,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:10,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:10,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88800003] [2024-11-28 02:13:10,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88800003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:10,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:10,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:13:10,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737937095] [2024-11-28 02:13:10,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:10,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:13:10,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:10,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:13:10,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:13:10,191 INFO L87 Difference]: Start difference. First operand 13467 states and 17337 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:12,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:12,222 INFO L93 Difference]: Finished difference Result 14090 states and 18251 transitions. [2024-11-28 02:13:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:13:12,223 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-28 02:13:12,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:12,288 INFO L225 Difference]: With dead ends: 14090 [2024-11-28 02:13:12,288 INFO L226 Difference]: Without dead ends: 13754 [2024-11-28 02:13:12,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:13:12,299 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 466 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:12,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1028 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:13:12,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13754 states. [2024-11-28 02:13:13,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13754 to 13681. [2024-11-28 02:13:13,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13681 states, 10502 states have (on average 1.2769948581222623) internal successors, (13411), 10719 states have internal predecessors, (13411), 1529 states have call successors, (1529), 1301 states have call predecessors, (1529), 1648 states have return successors, (2710), 1667 states have call predecessors, (2710), 1528 states have call successors, (2710) [2024-11-28 02:13:13,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13681 states to 13681 states and 17650 transitions. [2024-11-28 02:13:13,841 INFO L78 Accepts]: Start accepts. Automaton has 13681 states and 17650 transitions. Word has length 66 [2024-11-28 02:13:13,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:13,842 INFO L471 AbstractCegarLoop]: Abstraction has 13681 states and 17650 transitions. [2024-11-28 02:13:13,842 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:13,842 INFO L276 IsEmpty]: Start isEmpty. Operand 13681 states and 17650 transitions. [2024-11-28 02:13:13,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:13:13,845 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:13,845 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:13,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:13:13,845 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:13,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:13,846 INFO L85 PathProgramCache]: Analyzing trace with hash 50660413, now seen corresponding path program 1 times [2024-11-28 02:13:13,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:13,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589269144] [2024-11-28 02:13:13,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:13,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:13,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:13,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589269144] [2024-11-28 02:13:13,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589269144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:13,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:13,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:13:13,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263460661] [2024-11-28 02:13:13,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:13,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:13:13,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:13,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:13:13,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:13:13,990 INFO L87 Difference]: Start difference. First operand 13681 states and 17650 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:16,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:16,282 INFO L93 Difference]: Finished difference Result 14754 states and 19234 transitions. [2024-11-28 02:13:16,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:13:16,283 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-28 02:13:16,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:16,337 INFO L225 Difference]: With dead ends: 14754 [2024-11-28 02:13:16,337 INFO L226 Difference]: Without dead ends: 14204 [2024-11-28 02:13:16,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:13:16,346 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 481 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:16,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1012 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:13:16,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14204 states. [2024-11-28 02:13:17,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14204 to 14102. [2024-11-28 02:13:17,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14102 states, 10847 states have (on average 1.2824744168894626) internal successors, (13911), 11078 states have internal predecessors, (13911), 1567 states have call successors, (1567), 1325 states have call predecessors, (1567), 1686 states have return successors, (2796), 1709 states have call predecessors, (2796), 1566 states have call successors, (2796) [2024-11-28 02:13:17,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14102 states to 14102 states and 18274 transitions. [2024-11-28 02:13:17,849 INFO L78 Accepts]: Start accepts. Automaton has 14102 states and 18274 transitions. Word has length 66 [2024-11-28 02:13:17,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:17,849 INFO L471 AbstractCegarLoop]: Abstraction has 14102 states and 18274 transitions. [2024-11-28 02:13:17,850 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:17,850 INFO L276 IsEmpty]: Start isEmpty. Operand 14102 states and 18274 transitions. [2024-11-28 02:13:17,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:13:17,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:17,852 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:17,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:13:17,853 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:17,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:17,853 INFO L85 PathProgramCache]: Analyzing trace with hash 35141695, now seen corresponding path program 1 times [2024-11-28 02:13:17,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:17,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569901908] [2024-11-28 02:13:17,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:17,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:17,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:17,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569901908] [2024-11-28 02:13:17,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569901908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:17,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:17,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:13:17,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256379387] [2024-11-28 02:13:17,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:17,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:13:17,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:17,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:13:17,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:13:17,973 INFO L87 Difference]: Start difference. First operand 14102 states and 18274 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:19,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:19,965 INFO L93 Difference]: Finished difference Result 16031 states and 21176 transitions. [2024-11-28 02:13:19,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:13:19,966 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-28 02:13:19,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:20,025 INFO L225 Difference]: With dead ends: 16031 [2024-11-28 02:13:20,025 INFO L226 Difference]: Without dead ends: 15060 [2024-11-28 02:13:20,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:13:20,034 INFO L435 NwaCegarLoop]: 267 mSDtfsCounter, 436 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:20,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1004 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:13:20,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15060 states. [2024-11-28 02:13:21,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15060 to 14969. [2024-11-28 02:13:21,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14969 states, 11552 states have (on average 1.2919840720221607) internal successors, (14925), 11829 states have internal predecessors, (14925), 1637 states have call successors, (1637), 1371 states have call predecessors, (1637), 1778 states have return successors, (3058), 1787 states have call predecessors, (3058), 1636 states have call successors, (3058) [2024-11-28 02:13:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14969 states to 14969 states and 19620 transitions. [2024-11-28 02:13:21,778 INFO L78 Accepts]: Start accepts. Automaton has 14969 states and 19620 transitions. Word has length 66 [2024-11-28 02:13:21,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:21,779 INFO L471 AbstractCegarLoop]: Abstraction has 14969 states and 19620 transitions. [2024-11-28 02:13:21,779 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:21,779 INFO L276 IsEmpty]: Start isEmpty. Operand 14969 states and 19620 transitions. [2024-11-28 02:13:21,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:13:21,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:21,783 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:21,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:13:21,784 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:21,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:21,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1974303741, now seen corresponding path program 1 times [2024-11-28 02:13:21,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:21,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026687633] [2024-11-28 02:13:21,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:21,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:21,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:21,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026687633] [2024-11-28 02:13:21,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026687633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:21,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:21,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:13:21,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441481339] [2024-11-28 02:13:21,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:21,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:13:21,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:21,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:13:21,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:13:21,872 INFO L87 Difference]: Start difference. First operand 14969 states and 19620 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:23,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:23,399 INFO L93 Difference]: Finished difference Result 16857 states and 22520 transitions. [2024-11-28 02:13:23,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:13:23,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-28 02:13:23,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:23,463 INFO L225 Difference]: With dead ends: 16857 [2024-11-28 02:13:23,463 INFO L226 Difference]: Without dead ends: 15020 [2024-11-28 02:13:23,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:13:23,476 INFO L435 NwaCegarLoop]: 305 mSDtfsCounter, 0 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:23,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1214 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:13:23,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15020 states. [2024-11-28 02:13:24,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15020 to 15020. [2024-11-28 02:13:24,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15020 states, 11603 states have (on average 1.2907006808583987) internal successors, (14976), 11880 states have internal predecessors, (14976), 1637 states have call successors, (1637), 1371 states have call predecessors, (1637), 1778 states have return successors, (3058), 1787 states have call predecessors, (3058), 1636 states have call successors, (3058) [2024-11-28 02:13:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15020 states to 15020 states and 19671 transitions. [2024-11-28 02:13:24,962 INFO L78 Accepts]: Start accepts. Automaton has 15020 states and 19671 transitions. Word has length 66 [2024-11-28 02:13:24,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:24,963 INFO L471 AbstractCegarLoop]: Abstraction has 15020 states and 19671 transitions. [2024-11-28 02:13:24,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:24,963 INFO L276 IsEmpty]: Start isEmpty. Operand 15020 states and 19671 transitions. [2024-11-28 02:13:24,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:13:24,965 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:24,966 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:24,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 02:13:24,966 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:24,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:24,966 INFO L85 PathProgramCache]: Analyzing trace with hash 128936575, now seen corresponding path program 1 times [2024-11-28 02:13:24,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:24,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687527974] [2024-11-28 02:13:24,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:24,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:25,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:25,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687527974] [2024-11-28 02:13:25,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687527974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:25,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:25,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:13:25,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707168500] [2024-11-28 02:13:25,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:25,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:13:25,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:25,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:13:25,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:13:25,023 INFO L87 Difference]: Start difference. First operand 15020 states and 19671 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:26,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:26,431 INFO L93 Difference]: Finished difference Result 18703 states and 25273 transitions. [2024-11-28 02:13:26,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:13:26,432 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-28 02:13:26,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:26,491 INFO L225 Difference]: With dead ends: 18703 [2024-11-28 02:13:26,491 INFO L226 Difference]: Without dead ends: 16815 [2024-11-28 02:13:26,502 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 02:13:26,503 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 433 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:26,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 824 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:13:26,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16815 states. [2024-11-28 02:13:28,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16815 to 16788. [2024-11-28 02:13:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16788 states, 13056 states have (on average 1.3014705882352942) internal successors, (16992), 13399 states have internal predecessors, (16992), 1788 states have call successors, (1788), 1469 states have call predecessors, (1788), 1942 states have return successors, (3450), 1938 states have call predecessors, (3450), 1787 states have call successors, (3450) [2024-11-28 02:13:28,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16788 states to 16788 states and 22230 transitions. [2024-11-28 02:13:28,204 INFO L78 Accepts]: Start accepts. Automaton has 16788 states and 22230 transitions. Word has length 66 [2024-11-28 02:13:28,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:28,204 INFO L471 AbstractCegarLoop]: Abstraction has 16788 states and 22230 transitions. [2024-11-28 02:13:28,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:28,204 INFO L276 IsEmpty]: Start isEmpty. Operand 16788 states and 22230 transitions. [2024-11-28 02:13:28,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:13:28,207 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:28,207 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:28,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:13:28,207 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:28,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:28,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1254196544, now seen corresponding path program 1 times [2024-11-28 02:13:28,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:28,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867433260] [2024-11-28 02:13:28,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:28,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:28,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:28,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:28,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867433260] [2024-11-28 02:13:28,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867433260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:28,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:28,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:13:28,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963563791] [2024-11-28 02:13:28,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:28,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:13:28,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:28,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:13:28,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:13:28,265 INFO L87 Difference]: Start difference. First operand 16788 states and 22230 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:29,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:29,720 INFO L93 Difference]: Finished difference Result 20495 states and 27789 transitions. [2024-11-28 02:13:29,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:13:29,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-28 02:13:29,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:29,793 INFO L225 Difference]: With dead ends: 20495 [2024-11-28 02:13:29,793 INFO L226 Difference]: Without dead ends: 16839 [2024-11-28 02:13:29,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:13:29,812 INFO L435 NwaCegarLoop]: 304 mSDtfsCounter, 0 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:29,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1210 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:13:29,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16839 states. [2024-11-28 02:13:31,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16839 to 16839. [2024-11-28 02:13:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16839 states, 13107 states have (on average 1.2990005340657664) internal successors, (17026), 13450 states have internal predecessors, (17026), 1788 states have call successors, (1788), 1469 states have call predecessors, (1788), 1942 states have return successors, (3450), 1938 states have call predecessors, (3450), 1787 states have call successors, (3450) [2024-11-28 02:13:31,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16839 states to 16839 states and 22264 transitions. [2024-11-28 02:13:31,351 INFO L78 Accepts]: Start accepts. Automaton has 16839 states and 22264 transitions. Word has length 66 [2024-11-28 02:13:31,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:31,351 INFO L471 AbstractCegarLoop]: Abstraction has 16839 states and 22264 transitions. [2024-11-28 02:13:31,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:31,352 INFO L276 IsEmpty]: Start isEmpty. Operand 16839 states and 22264 transitions. [2024-11-28 02:13:31,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:13:31,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:31,354 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:31,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:13:31,355 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:31,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:31,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1181809986, now seen corresponding path program 1 times [2024-11-28 02:13:31,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:31,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034893924] [2024-11-28 02:13:31,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:31,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:31,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:31,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034893924] [2024-11-28 02:13:31,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034893924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:31,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:31,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:13:31,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359454809] [2024-11-28 02:13:31,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:31,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:13:31,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:31,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:13:31,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:13:31,408 INFO L87 Difference]: Start difference. First operand 16839 states and 22264 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:33,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:33,085 INFO L93 Difference]: Finished difference Result 20648 states and 27925 transitions. [2024-11-28 02:13:33,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:13:33,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-28 02:13:33,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:33,145 INFO L225 Difference]: With dead ends: 20648 [2024-11-28 02:13:33,145 INFO L226 Difference]: Without dead ends: 16941 [2024-11-28 02:13:33,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:13:33,160 INFO L435 NwaCegarLoop]: 304 mSDtfsCounter, 0 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:33,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1210 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:13:33,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16941 states. [2024-11-28 02:13:34,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16941 to 16941. [2024-11-28 02:13:34,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16941 states, 13209 states have (on average 1.296691649632826) internal successors, (17128), 13552 states have internal predecessors, (17128), 1788 states have call successors, (1788), 1469 states have call predecessors, (1788), 1942 states have return successors, (3450), 1938 states have call predecessors, (3450), 1787 states have call successors, (3450) [2024-11-28 02:13:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16941 states to 16941 states and 22366 transitions. [2024-11-28 02:13:34,440 INFO L78 Accepts]: Start accepts. Automaton has 16941 states and 22366 transitions. Word has length 66 [2024-11-28 02:13:34,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:34,440 INFO L471 AbstractCegarLoop]: Abstraction has 16941 states and 22366 transitions. [2024-11-28 02:13:34,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:34,440 INFO L276 IsEmpty]: Start isEmpty. Operand 16941 states and 22366 transitions. [2024-11-28 02:13:34,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:13:34,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:34,442 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:34,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:13:34,442 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:34,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:34,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1189929276, now seen corresponding path program 1 times [2024-11-28 02:13:34,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:34,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037862217] [2024-11-28 02:13:34,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:34,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:34,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:34,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037862217] [2024-11-28 02:13:34,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037862217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:34,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:34,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:13:34,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116192454] [2024-11-28 02:13:34,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:34,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:13:34,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:34,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:13:34,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:13:34,575 INFO L87 Difference]: Start difference. First operand 16941 states and 22366 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:36,258 INFO L93 Difference]: Finished difference Result 17545 states and 23218 transitions. [2024-11-28 02:13:36,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:13:36,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-28 02:13:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:36,312 INFO L225 Difference]: With dead ends: 17545 [2024-11-28 02:13:36,312 INFO L226 Difference]: Without dead ends: 15412 [2024-11-28 02:13:36,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:13:36,326 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 446 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:36,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 835 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:13:36,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15412 states. [2024-11-28 02:13:37,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15412 to 15276. [2024-11-28 02:13:37,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15276 states, 11841 states have (on average 1.2833375559496665) internal successors, (15196), 12092 states have internal predecessors, (15196), 1664 states have call successors, (1664), 1388 states have call predecessors, (1664), 1769 states have return successors, (2950), 1806 states have call predecessors, (2950), 1663 states have call successors, (2950) [2024-11-28 02:13:37,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15276 states to 15276 states and 19810 transitions. [2024-11-28 02:13:37,904 INFO L78 Accepts]: Start accepts. Automaton has 15276 states and 19810 transitions. Word has length 66 [2024-11-28 02:13:37,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:37,904 INFO L471 AbstractCegarLoop]: Abstraction has 15276 states and 19810 transitions. [2024-11-28 02:13:37,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 15276 states and 19810 transitions. [2024-11-28 02:13:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:13:37,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:37,906 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:37,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:13:37,906 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:37,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:37,906 INFO L85 PathProgramCache]: Analyzing trace with hash -971074558, now seen corresponding path program 1 times [2024-11-28 02:13:37,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:37,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154768040] [2024-11-28 02:13:37,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:37,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:38,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:38,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154768040] [2024-11-28 02:13:38,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154768040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:38,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:38,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:13:38,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362178398] [2024-11-28 02:13:38,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:38,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:13:38,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:38,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:13:38,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:13:38,023 INFO L87 Difference]: Start difference. First operand 15276 states and 19810 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:39,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:39,716 INFO L93 Difference]: Finished difference Result 16916 states and 22031 transitions. [2024-11-28 02:13:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:13:39,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-28 02:13:39,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:39,773 INFO L225 Difference]: With dead ends: 16916 [2024-11-28 02:13:39,774 INFO L226 Difference]: Without dead ends: 15566 [2024-11-28 02:13:39,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:13:39,786 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 454 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:39,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 788 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:13:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15566 states. [2024-11-28 02:13:41,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15566 to 15220. [2024-11-28 02:13:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15220 states, 11803 states have (on average 1.2818774887740405) internal successors, (15130), 12036 states have internal predecessors, (15130), 1664 states have call successors, (1664), 1388 states have call predecessors, (1664), 1751 states have return successors, (2882), 1802 states have call predecessors, (2882), 1663 states have call successors, (2882) [2024-11-28 02:13:41,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15220 states to 15220 states and 19676 transitions. [2024-11-28 02:13:41,269 INFO L78 Accepts]: Start accepts. Automaton has 15220 states and 19676 transitions. Word has length 66 [2024-11-28 02:13:41,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:41,269 INFO L471 AbstractCegarLoop]: Abstraction has 15220 states and 19676 transitions. [2024-11-28 02:13:41,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:41,269 INFO L276 IsEmpty]: Start isEmpty. Operand 15220 states and 19676 transitions. [2024-11-28 02:13:41,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:13:41,271 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:41,271 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:41,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 02:13:41,271 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:41,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:41,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1788723008, now seen corresponding path program 1 times [2024-11-28 02:13:41,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:41,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284327875] [2024-11-28 02:13:41,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:41,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:41,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:41,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284327875] [2024-11-28 02:13:41,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284327875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:41,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:41,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:13:41,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376688087] [2024-11-28 02:13:41,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:41,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:13:41,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:41,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:13:41,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:13:41,384 INFO L87 Difference]: Start difference. First operand 15220 states and 19676 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:43,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:43,200 INFO L93 Difference]: Finished difference Result 16696 states and 21694 transitions. [2024-11-28 02:13:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:13:43,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-28 02:13:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:43,248 INFO L225 Difference]: With dead ends: 16696 [2024-11-28 02:13:43,248 INFO L226 Difference]: Without dead ends: 15370 [2024-11-28 02:13:43,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:13:43,257 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 443 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:43,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 780 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:13:43,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15370 states. [2024-11-28 02:13:44,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15370 to 15188. [2024-11-28 02:13:44,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15188 states, 11783 states have (on average 1.2809980480353051) internal successors, (15094), 12004 states have internal predecessors, (15094), 1664 states have call successors, (1664), 1388 states have call predecessors, (1664), 1739 states have return successors, (2848), 1800 states have call predecessors, (2848), 1663 states have call successors, (2848) [2024-11-28 02:13:44,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15188 states to 15188 states and 19606 transitions. [2024-11-28 02:13:44,540 INFO L78 Accepts]: Start accepts. Automaton has 15188 states and 19606 transitions. Word has length 66 [2024-11-28 02:13:44,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:44,541 INFO L471 AbstractCegarLoop]: Abstraction has 15188 states and 19606 transitions. [2024-11-28 02:13:44,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:44,541 INFO L276 IsEmpty]: Start isEmpty. Operand 15188 states and 19606 transitions. [2024-11-28 02:13:44,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:13:44,542 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:44,542 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:44,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 02:13:44,542 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:44,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:44,543 INFO L85 PathProgramCache]: Analyzing trace with hash 817300546, now seen corresponding path program 1 times [2024-11-28 02:13:44,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:44,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860674815] [2024-11-28 02:13:44,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:44,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:44,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:44,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:44,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860674815] [2024-11-28 02:13:44,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860674815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:44,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:44,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:13:44,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945053947] [2024-11-28 02:13:44,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:44,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:13:44,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:44,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:13:44,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:13:44,653 INFO L87 Difference]: Start difference. First operand 15188 states and 19606 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:46,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:46,458 INFO L93 Difference]: Finished difference Result 16196 states and 20957 transitions. [2024-11-28 02:13:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:13:46,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-28 02:13:46,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:46,498 INFO L225 Difference]: With dead ends: 16196 [2024-11-28 02:13:46,498 INFO L226 Difference]: Without dead ends: 14915 [2024-11-28 02:13:46,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:13:46,505 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 432 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:46,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 772 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:13:46,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14915 states. [2024-11-28 02:13:47,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14915 to 14795. [2024-11-28 02:13:47,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14795 states, 11456 states have (on average 1.2787185754189945) internal successors, (14649), 11669 states have internal predecessors, (14649), 1629 states have call successors, (1629), 1365 states have call predecessors, (1629), 1708 states have return successors, (2796), 1764 states have call predecessors, (2796), 1628 states have call successors, (2796) [2024-11-28 02:13:47,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14795 states to 14795 states and 19074 transitions. [2024-11-28 02:13:47,581 INFO L78 Accepts]: Start accepts. Automaton has 14795 states and 19074 transitions. Word has length 66 [2024-11-28 02:13:47,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:47,582 INFO L471 AbstractCegarLoop]: Abstraction has 14795 states and 19074 transitions. [2024-11-28 02:13:47,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:13:47,582 INFO L276 IsEmpty]: Start isEmpty. Operand 14795 states and 19074 transitions. [2024-11-28 02:13:47,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 02:13:47,583 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:47,583 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:47,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 02:13:47,583 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:47,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:47,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1176844160, now seen corresponding path program 1 times [2024-11-28 02:13:47,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:47,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636647617] [2024-11-28 02:13:47,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:47,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:47,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:47,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636647617] [2024-11-28 02:13:47,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636647617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:47,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:47,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:13:47,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748410074] [2024-11-28 02:13:47,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:47,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:13:47,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:47,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:13:47,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:13:47,615 INFO L87 Difference]: Start difference. First operand 14795 states and 19074 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 02:13:48,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:48,879 INFO L93 Difference]: Finished difference Result 17074 states and 22165 transitions. [2024-11-28 02:13:48,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:13:48,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 66 [2024-11-28 02:13:48,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:48,914 INFO L225 Difference]: With dead ends: 17074 [2024-11-28 02:13:48,914 INFO L226 Difference]: Without dead ends: 15411 [2024-11-28 02:13:48,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:13:48,923 INFO L435 NwaCegarLoop]: 307 mSDtfsCounter, 276 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:48,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 463 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:13:48,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15411 states. [2024-11-28 02:13:50,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15411 to 15401. [2024-11-28 02:13:50,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15401 states, 11968 states have (on average 1.2798295454545454) internal successors, (15317), 12193 states have internal predecessors, (15317), 1685 states have call successors, (1685), 1401 states have call predecessors, (1685), 1746 states have return successors, (2854), 1810 states have call predecessors, (2854), 1684 states have call successors, (2854) [2024-11-28 02:13:50,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15401 states to 15401 states and 19856 transitions. [2024-11-28 02:13:50,143 INFO L78 Accepts]: Start accepts. Automaton has 15401 states and 19856 transitions. Word has length 66 [2024-11-28 02:13:50,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:50,144 INFO L471 AbstractCegarLoop]: Abstraction has 15401 states and 19856 transitions. [2024-11-28 02:13:50,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 02:13:50,144 INFO L276 IsEmpty]: Start isEmpty. Operand 15401 states and 19856 transitions. [2024-11-28 02:13:50,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 02:13:50,149 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:50,149 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 02:13:50,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 02:13:50,149 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:50,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:50,150 INFO L85 PathProgramCache]: Analyzing trace with hash 353345917, now seen corresponding path program 2 times [2024-11-28 02:13:50,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:50,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370328969] [2024-11-28 02:13:50,150 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:13:50,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:50,162 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:13:50,162 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:13:50,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:50,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:50,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370328969] [2024-11-28 02:13:50,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370328969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:50,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:50,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:13:50,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726508433] [2024-11-28 02:13:50,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:50,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:13:50,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:50,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:13:50,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:13:50,183 INFO L87 Difference]: Start difference. First operand 15401 states and 19856 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 02:13:51,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:51,038 INFO L93 Difference]: Finished difference Result 22191 states and 28673 transitions. [2024-11-28 02:13:51,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:13:51,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2024-11-28 02:13:51,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:51,067 INFO L225 Difference]: With dead ends: 22191 [2024-11-28 02:13:51,067 INFO L226 Difference]: Without dead ends: 9519 [2024-11-28 02:13:51,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:13:51,091 INFO L435 NwaCegarLoop]: 378 mSDtfsCounter, 279 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:51,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 490 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:13:51,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9519 states. [2024-11-28 02:13:51,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9519 to 9421. [2024-11-28 02:13:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9421 states, 7405 states have (on average 1.2659014179608372) internal successors, (9374), 7528 states have internal predecessors, (9374), 1019 states have call successors, (1019), 823 states have call predecessors, (1019), 995 states have return successors, (1568), 1073 states have call predecessors, (1568), 1018 states have call successors, (1568) [2024-11-28 02:13:51,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9421 states to 9421 states and 11961 transitions. [2024-11-28 02:13:51,907 INFO L78 Accepts]: Start accepts. Automaton has 9421 states and 11961 transitions. Word has length 71 [2024-11-28 02:13:51,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:51,907 INFO L471 AbstractCegarLoop]: Abstraction has 9421 states and 11961 transitions. [2024-11-28 02:13:51,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 02:13:51,908 INFO L276 IsEmpty]: Start isEmpty. Operand 9421 states and 11961 transitions. [2024-11-28 02:13:51,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-28 02:13:51,909 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:51,909 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:51,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 02:13:51,910 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:51,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:51,910 INFO L85 PathProgramCache]: Analyzing trace with hash -285283786, now seen corresponding path program 1 times [2024-11-28 02:13:51,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:51,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924952992] [2024-11-28 02:13:51,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:51,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:51,987 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:13:51,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:51,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924952992] [2024-11-28 02:13:51,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924952992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:51,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:51,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:13:51,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838536716] [2024-11-28 02:13:51,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:51,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:13:51,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:51,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:13:51,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:13:51,989 INFO L87 Difference]: Start difference. First operand 9421 states and 11961 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:13:54,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:54,154 INFO L93 Difference]: Finished difference Result 23739 states and 29998 transitions. [2024-11-28 02:13:54,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:13:54,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 80 [2024-11-28 02:13:54,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:54,194 INFO L225 Difference]: With dead ends: 23739 [2024-11-28 02:13:54,194 INFO L226 Difference]: Without dead ends: 16617 [2024-11-28 02:13:54,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:13:54,209 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 574 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:54,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 970 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:13:54,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16617 states. [2024-11-28 02:13:55,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16617 to 15990. [2024-11-28 02:13:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15990 states, 12354 states have (on average 1.2335276023959851) internal successors, (15239), 12609 states have internal predecessors, (15239), 1786 states have call successors, (1786), 1481 states have call predecessors, (1786), 1848 states have return successors, (3055), 1906 states have call predecessors, (3055), 1785 states have call successors, (3055) [2024-11-28 02:13:55,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15990 states to 15990 states and 20080 transitions. [2024-11-28 02:13:55,528 INFO L78 Accepts]: Start accepts. Automaton has 15990 states and 20080 transitions. Word has length 80 [2024-11-28 02:13:55,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:55,529 INFO L471 AbstractCegarLoop]: Abstraction has 15990 states and 20080 transitions. [2024-11-28 02:13:55,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:13:55,529 INFO L276 IsEmpty]: Start isEmpty. Operand 15990 states and 20080 transitions. [2024-11-28 02:13:55,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 02:13:55,531 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:55,532 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 02:13:55,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 02:13:55,532 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:55,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:55,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1598285642, now seen corresponding path program 1 times [2024-11-28 02:13:55,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:55,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510345071] [2024-11-28 02:13:55,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:55,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:13:55,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:55,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510345071] [2024-11-28 02:13:55,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510345071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:55,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:55,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:13:55,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46396450] [2024-11-28 02:13:55,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:55,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:13:55,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:55,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:13:55,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:13:55,627 INFO L87 Difference]: Start difference. First operand 15990 states and 20080 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:13:57,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:57,814 INFO L93 Difference]: Finished difference Result 25962 states and 32440 transitions. [2024-11-28 02:13:57,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:13:57,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2024-11-28 02:13:57,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:57,845 INFO L225 Difference]: With dead ends: 25962 [2024-11-28 02:13:57,845 INFO L226 Difference]: Without dead ends: 13991 [2024-11-28 02:13:57,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:13:57,860 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 1088 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:57,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 1019 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:13:57,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13991 states. [2024-11-28 02:13:58,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13991 to 13190. [2024-11-28 02:13:58,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13190 states, 10283 states have (on average 1.2286297773023436) internal successors, (12634), 10452 states have internal predecessors, (12634), 1445 states have call successors, (1445), 1183 states have call predecessors, (1445), 1460 states have return successors, (2223), 1561 states have call predecessors, (2223), 1444 states have call successors, (2223) [2024-11-28 02:13:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13190 states to 13190 states and 16302 transitions. [2024-11-28 02:13:58,899 INFO L78 Accepts]: Start accepts. Automaton has 13190 states and 16302 transitions. Word has length 86 [2024-11-28 02:13:58,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:58,899 INFO L471 AbstractCegarLoop]: Abstraction has 13190 states and 16302 transitions. [2024-11-28 02:13:58,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:13:58,900 INFO L276 IsEmpty]: Start isEmpty. Operand 13190 states and 16302 transitions. [2024-11-28 02:13:58,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 02:13:58,903 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:58,903 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:13:58,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 02:13:58,903 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:13:58,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:58,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1381265275, now seen corresponding path program 1 times [2024-11-28 02:13:58,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:58,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088392269] [2024-11-28 02:13:58,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:58,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:58,985 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 02:13:58,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:58,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088392269] [2024-11-28 02:13:58,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088392269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:13:58,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:13:58,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:13:58,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974683150] [2024-11-28 02:13:58,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:13:58,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:13:58,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:13:58,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:13:58,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:13:58,988 INFO L87 Difference]: Start difference. First operand 13190 states and 16302 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:14:00,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:00,652 INFO L93 Difference]: Finished difference Result 17846 states and 22582 transitions. [2024-11-28 02:14:00,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:14:00,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 107 [2024-11-28 02:14:00,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:00,689 INFO L225 Difference]: With dead ends: 17846 [2024-11-28 02:14:00,689 INFO L226 Difference]: Without dead ends: 15578 [2024-11-28 02:14:00,697 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 02:14:00,697 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 396 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:00,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 498 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:14:00,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15578 states. [2024-11-28 02:14:01,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15578 to 15558. [2024-11-28 02:14:01,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15558 states, 12284 states have (on average 1.242429176164116) internal successors, (15262), 12484 states have internal predecessors, (15262), 1649 states have call successors, (1649), 1312 states have call predecessors, (1649), 1623 states have return successors, (2547), 1769 states have call predecessors, (2547), 1648 states have call successors, (2547) [2024-11-28 02:14:02,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15558 states to 15558 states and 19458 transitions. [2024-11-28 02:14:02,025 INFO L78 Accepts]: Start accepts. Automaton has 15558 states and 19458 transitions. Word has length 107 [2024-11-28 02:14:02,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:02,026 INFO L471 AbstractCegarLoop]: Abstraction has 15558 states and 19458 transitions. [2024-11-28 02:14:02,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:14:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand 15558 states and 19458 transitions. [2024-11-28 02:14:02,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 02:14:02,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:02,030 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:14:02,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 02:14:02,030 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:02,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:02,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1007298755, now seen corresponding path program 1 times [2024-11-28 02:14:02,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:02,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909322652] [2024-11-28 02:14:02,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:02,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:02,059 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 02:14:02,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:02,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909322652] [2024-11-28 02:14:02,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909322652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:02,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:02,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:14:02,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075094263] [2024-11-28 02:14:02,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:02,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:14:02,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:02,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:14:02,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:14:02,063 INFO L87 Difference]: Start difference. First operand 15558 states and 19458 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:14:03,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:03,143 INFO L93 Difference]: Finished difference Result 19354 states and 24471 transitions. [2024-11-28 02:14:03,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:14:03,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 107 [2024-11-28 02:14:03,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:03,182 INFO L225 Difference]: With dead ends: 19354 [2024-11-28 02:14:03,182 INFO L226 Difference]: Without dead ends: 14718 [2024-11-28 02:14:03,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:14:03,195 INFO L435 NwaCegarLoop]: 305 mSDtfsCounter, 175 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:03,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 430 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:14:03,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14718 states. [2024-11-28 02:14:04,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14718 to 14718. [2024-11-28 02:14:04,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14718 states, 11581 states have (on average 1.2353855452896987) internal successors, (14307), 11774 states have internal predecessors, (14307), 1565 states have call successors, (1565), 1261 states have call predecessors, (1565), 1570 states have return successors, (2437), 1689 states have call predecessors, (2437), 1564 states have call successors, (2437) [2024-11-28 02:14:04,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14718 states to 14718 states and 18309 transitions. [2024-11-28 02:14:04,452 INFO L78 Accepts]: Start accepts. Automaton has 14718 states and 18309 transitions. Word has length 107 [2024-11-28 02:14:04,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:04,453 INFO L471 AbstractCegarLoop]: Abstraction has 14718 states and 18309 transitions. [2024-11-28 02:14:04,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:14:04,453 INFO L276 IsEmpty]: Start isEmpty. Operand 14718 states and 18309 transitions. [2024-11-28 02:14:04,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-28 02:14:04,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:04,457 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:14:04,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 02:14:04,457 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:04,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:04,458 INFO L85 PathProgramCache]: Analyzing trace with hash -2089977592, now seen corresponding path program 1 times [2024-11-28 02:14:04,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:04,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205528022] [2024-11-28 02:14:04,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:04,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:04,536 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 02:14:04,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:04,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205528022] [2024-11-28 02:14:04,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205528022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:04,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:04,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:14:04,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143939669] [2024-11-28 02:14:04,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:04,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:14:04,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:04,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:14:04,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:14:04,538 INFO L87 Difference]: Start difference. First operand 14718 states and 18309 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:14:06,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:06,638 INFO L93 Difference]: Finished difference Result 22338 states and 28397 transitions. [2024-11-28 02:14:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:14:06,638 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), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 109 [2024-11-28 02:14:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:06,682 INFO L225 Difference]: With dead ends: 22338 [2024-11-28 02:14:06,682 INFO L226 Difference]: Without dead ends: 18542 [2024-11-28 02:14:06,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 02:14:06,694 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 379 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:06,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 530 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:14:06,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18542 states. [2024-11-28 02:14:08,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18542 to 18484. [2024-11-28 02:14:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18484 states, 14697 states have (on average 1.2463087704973803) internal successors, (18317), 14987 states have internal predecessors, (18317), 1872 states have call successors, (1872), 1465 states have call predecessors, (1872), 1913 states have return successors, (3058), 2039 states have call predecessors, (3058), 1871 states have call successors, (3058) [2024-11-28 02:14:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18484 states to 18484 states and 23247 transitions. [2024-11-28 02:14:08,340 INFO L78 Accepts]: Start accepts. Automaton has 18484 states and 23247 transitions. Word has length 109 [2024-11-28 02:14:08,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:08,341 INFO L471 AbstractCegarLoop]: Abstraction has 18484 states and 23247 transitions. [2024-11-28 02:14:08,341 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), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:14:08,341 INFO L276 IsEmpty]: Start isEmpty. Operand 18484 states and 23247 transitions. [2024-11-28 02:14:08,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-28 02:14:08,345 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:08,345 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:14:08,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 02:14:08,345 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:08,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:08,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1058936694, now seen corresponding path program 1 times [2024-11-28 02:14:08,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:08,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352592138] [2024-11-28 02:14:08,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:08,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:08,383 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 02:14:08,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:08,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352592138] [2024-11-28 02:14:08,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352592138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:08,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:08,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:14:08,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301595207] [2024-11-28 02:14:08,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:08,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:14:08,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:08,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:14:08,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:14:08,385 INFO L87 Difference]: Start difference. First operand 18484 states and 23247 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:14:09,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:09,883 INFO L93 Difference]: Finished difference Result 26043 states and 33192 transitions. [2024-11-28 02:14:09,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:14:09,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 109 [2024-11-28 02:14:09,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:09,933 INFO L225 Difference]: With dead ends: 26043 [2024-11-28 02:14:09,933 INFO L226 Difference]: Without dead ends: 18480 [2024-11-28 02:14:09,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:14:09,953 INFO L435 NwaCegarLoop]: 304 mSDtfsCounter, 173 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:09,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 429 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:14:09,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18480 states. [2024-11-28 02:14:11,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18480 to 18480. [2024-11-28 02:14:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18480 states, 14696 states have (on average 1.2462574850299402) internal successors, (18315), 14985 states have internal predecessors, (18315), 1869 states have call successors, (1869), 1465 states have call predecessors, (1869), 1913 states have return successors, (3054), 2036 states have call predecessors, (3054), 1868 states have call successors, (3054) [2024-11-28 02:14:11,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18480 states to 18480 states and 23238 transitions. [2024-11-28 02:14:11,610 INFO L78 Accepts]: Start accepts. Automaton has 18480 states and 23238 transitions. Word has length 109 [2024-11-28 02:14:11,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:11,610 INFO L471 AbstractCegarLoop]: Abstraction has 18480 states and 23238 transitions. [2024-11-28 02:14:11,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:14:11,611 INFO L276 IsEmpty]: Start isEmpty. Operand 18480 states and 23238 transitions. [2024-11-28 02:14:11,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-28 02:14:11,615 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:11,616 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:14:11,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 02:14:11,616 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:11,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:11,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2009209915, now seen corresponding path program 1 times [2024-11-28 02:14:11,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:11,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563997610] [2024-11-28 02:14:11,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:11,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 02:14:11,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:11,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563997610] [2024-11-28 02:14:11,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563997610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:11,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:11,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:14:11,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733635011] [2024-11-28 02:14:11,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:11,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:14:11,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:11,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:14:11,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:14:11,702 INFO L87 Difference]: Start difference. First operand 18480 states and 23238 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:14:14,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:14,664 INFO L93 Difference]: Finished difference Result 32498 states and 42371 transitions. [2024-11-28 02:14:14,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:14:14,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 111 [2024-11-28 02:14:14,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:14,730 INFO L225 Difference]: With dead ends: 32498 [2024-11-28 02:14:14,730 INFO L226 Difference]: Without dead ends: 22267 [2024-11-28 02:14:14,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:14:14,759 INFO L435 NwaCegarLoop]: 309 mSDtfsCounter, 1455 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:14,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 1292 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:14:14,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22267 states. [2024-11-28 02:14:16,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22267 to 22047. [2024-11-28 02:14:16,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22047 states, 17710 states have (on average 1.245511010728402) internal successors, (22058), 18051 states have internal predecessors, (22058), 2142 states have call successors, (2142), 1661 states have call predecessors, (2142), 2193 states have return successors, (3626), 2341 states have call predecessors, (3626), 2141 states have call successors, (3626) [2024-11-28 02:14:16,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22047 states to 22047 states and 27826 transitions. [2024-11-28 02:14:16,699 INFO L78 Accepts]: Start accepts. Automaton has 22047 states and 27826 transitions. Word has length 111 [2024-11-28 02:14:16,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:16,700 INFO L471 AbstractCegarLoop]: Abstraction has 22047 states and 27826 transitions. [2024-11-28 02:14:16,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:14:16,700 INFO L276 IsEmpty]: Start isEmpty. Operand 22047 states and 27826 transitions. [2024-11-28 02:14:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-28 02:14:16,707 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:16,707 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:14:16,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 02:14:16,707 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:16,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:16,707 INFO L85 PathProgramCache]: Analyzing trace with hash 75597831, now seen corresponding path program 1 times [2024-11-28 02:14:16,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:16,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567335102] [2024-11-28 02:14:16,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:16,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 02:14:16,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:16,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567335102] [2024-11-28 02:14:16,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567335102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:16,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951171626] [2024-11-28 02:14:16,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:16,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:16,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:16,803 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:16,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:14:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:16,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:14:16,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:14:16,983 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:14:16,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951171626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:16,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:14:16,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-28 02:14:16,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035979328] [2024-11-28 02:14:16,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:16,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:14:16,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:16,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:14:16,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:14:16,985 INFO L87 Difference]: Start difference. First operand 22047 states and 27826 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:14:18,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:18,060 INFO L93 Difference]: Finished difference Result 26798 states and 33579 transitions. [2024-11-28 02:14:18,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:14:18,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2024-11-28 02:14:18,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:18,103 INFO L225 Difference]: With dead ends: 26798 [2024-11-28 02:14:18,103 INFO L226 Difference]: Without dead ends: 15917 [2024-11-28 02:14:18,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:14:18,121 INFO L435 NwaCegarLoop]: 301 mSDtfsCounter, 0 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:18,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1496 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:14:18,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15917 states. [2024-11-28 02:14:19,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15917 to 15727. [2024-11-28 02:14:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15727 states, 12944 states have (on average 1.2572620519159456) internal successors, (16274), 13180 states have internal predecessors, (16274), 1388 states have call successors, (1388), 1003 states have call predecessors, (1388), 1393 states have return successors, (2393), 1544 states have call predecessors, (2393), 1387 states have call successors, (2393) [2024-11-28 02:14:19,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15727 states to 15727 states and 20055 transitions. [2024-11-28 02:14:19,383 INFO L78 Accepts]: Start accepts. Automaton has 15727 states and 20055 transitions. Word has length 139 [2024-11-28 02:14:19,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:19,383 INFO L471 AbstractCegarLoop]: Abstraction has 15727 states and 20055 transitions. [2024-11-28 02:14:19,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:14:19,384 INFO L276 IsEmpty]: Start isEmpty. Operand 15727 states and 20055 transitions. [2024-11-28 02:14:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 02:14:19,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:19,391 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:19,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:14:19,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:19,592 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:19,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:19,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1841029803, now seen corresponding path program 1 times [2024-11-28 02:14:19,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:19,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815278998] [2024-11-28 02:14:19,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:19,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:19,633 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 02:14:19,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:19,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815278998] [2024-11-28 02:14:19,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815278998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:19,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:19,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:14:19,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860568500] [2024-11-28 02:14:19,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:19,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:14:19,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:19,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:14:19,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:14:19,635 INFO L87 Difference]: Start difference. First operand 15727 states and 20055 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 02:14:21,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:21,316 INFO L93 Difference]: Finished difference Result 30369 states and 39315 transitions. [2024-11-28 02:14:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:14:21,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 141 [2024-11-28 02:14:21,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:21,359 INFO L225 Difference]: With dead ends: 30369 [2024-11-28 02:14:21,359 INFO L226 Difference]: Without dead ends: 19243 [2024-11-28 02:14:21,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:14:21,375 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 259 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:21,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 476 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:14:21,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19243 states. [2024-11-28 02:14:22,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19243 to 19193. [2024-11-28 02:14:22,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19193 states, 15871 states have (on average 1.2575767122424548) internal successors, (19959), 16143 states have internal predecessors, (19959), 1687 states have call successors, (1687), 1207 states have call predecessors, (1687), 1633 states have return successors, (2802), 1843 states have call predecessors, (2802), 1686 states have call successors, (2802) [2024-11-28 02:14:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19193 states to 19193 states and 24448 transitions. [2024-11-28 02:14:22,769 INFO L78 Accepts]: Start accepts. Automaton has 19193 states and 24448 transitions. Word has length 141 [2024-11-28 02:14:22,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:22,770 INFO L471 AbstractCegarLoop]: Abstraction has 19193 states and 24448 transitions. [2024-11-28 02:14:22,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 02:14:22,770 INFO L276 IsEmpty]: Start isEmpty. Operand 19193 states and 24448 transitions. [2024-11-28 02:14:22,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 02:14:22,778 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:22,778 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:14:22,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-28 02:14:22,778 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:22,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:22,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1543518936, now seen corresponding path program 1 times [2024-11-28 02:14:22,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:22,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106903458] [2024-11-28 02:14:22,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:22,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-28 02:14:22,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:22,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106903458] [2024-11-28 02:14:22,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106903458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:22,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:22,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:14:22,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805952966] [2024-11-28 02:14:22,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:22,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:14:22,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:22,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:14:22,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:14:22,846 INFO L87 Difference]: Start difference. First operand 19193 states and 24448 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:14:24,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:24,732 INFO L93 Difference]: Finished difference Result 23285 states and 29390 transitions. [2024-11-28 02:14:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:14:24,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 150 [2024-11-28 02:14:24,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:24,786 INFO L225 Difference]: With dead ends: 23285 [2024-11-28 02:14:24,786 INFO L226 Difference]: Without dead ends: 19143 [2024-11-28 02:14:24,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:14:24,798 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 161 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:24,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 662 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:14:24,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19143 states. [2024-11-28 02:14:26,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19143 to 18896. [2024-11-28 02:14:26,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18896 states, 15648 states have (on average 1.2589468302658486) internal successors, (19700), 15922 states have internal predecessors, (19700), 1653 states have call successors, (1653), 1181 states have call predecessors, (1653), 1593 states have return successors, (2733), 1793 states have call predecessors, (2733), 1652 states have call successors, (2733) [2024-11-28 02:14:26,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18896 states to 18896 states and 24086 transitions. [2024-11-28 02:14:26,294 INFO L78 Accepts]: Start accepts. Automaton has 18896 states and 24086 transitions. Word has length 150 [2024-11-28 02:14:26,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:26,295 INFO L471 AbstractCegarLoop]: Abstraction has 18896 states and 24086 transitions. [2024-11-28 02:14:26,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:14:26,295 INFO L276 IsEmpty]: Start isEmpty. Operand 18896 states and 24086 transitions. [2024-11-28 02:14:26,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 02:14:26,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:26,301 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:14:26,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-28 02:14:26,302 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:26,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:26,302 INFO L85 PathProgramCache]: Analyzing trace with hash 399577172, now seen corresponding path program 1 times [2024-11-28 02:14:26,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:26,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626195846] [2024-11-28 02:14:26,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:26,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-28 02:14:26,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:26,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626195846] [2024-11-28 02:14:26,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626195846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:26,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300359452] [2024-11-28 02:14:26,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:26,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:26,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:26,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:26,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:14:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:26,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:14:26,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-28 02:14:26,835 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:14:26,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300359452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:26,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:14:26,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-28 02:14:26,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502978817] [2024-11-28 02:14:26,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:26,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:14:26,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:26,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:14:26,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:14:26,838 INFO L87 Difference]: Start difference. First operand 18896 states and 24086 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:14:28,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:28,887 INFO L93 Difference]: Finished difference Result 26575 states and 33605 transitions. [2024-11-28 02:14:28,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:14:28,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 153 [2024-11-28 02:14:28,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:28,940 INFO L225 Difference]: With dead ends: 26575 [2024-11-28 02:14:28,940 INFO L226 Difference]: Without dead ends: 22199 [2024-11-28 02:14:28,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:14:28,950 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 176 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:28,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 481 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:14:28,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22199 states. [2024-11-28 02:14:30,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22199 to 22083. [2024-11-28 02:14:30,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22083 states, 18145 states have (on average 1.2424910443648387) internal successors, (22545), 18464 states have internal predecessors, (22545), 1985 states have call successors, (1985), 1442 states have call predecessors, (1985), 1951 states have return successors, (3332), 2177 states have call predecessors, (3332), 1984 states have call successors, (3332) [2024-11-28 02:14:30,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22083 states to 22083 states and 27862 transitions. [2024-11-28 02:14:30,636 INFO L78 Accepts]: Start accepts. Automaton has 22083 states and 27862 transitions. Word has length 153 [2024-11-28 02:14:30,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:30,637 INFO L471 AbstractCegarLoop]: Abstraction has 22083 states and 27862 transitions. [2024-11-28 02:14:30,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:14:30,637 INFO L276 IsEmpty]: Start isEmpty. Operand 22083 states and 27862 transitions. [2024-11-28 02:14:30,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 02:14:30,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:30,647 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 02:14:30,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:14:30,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 02:14:30,848 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:30,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1313931645, now seen corresponding path program 1 times [2024-11-28 02:14:30,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:30,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676817840] [2024-11-28 02:14:30,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:30,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:30,926 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-28 02:14:30,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:30,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676817840] [2024-11-28 02:14:30,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676817840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:30,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:30,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:14:30,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38860958] [2024-11-28 02:14:30,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:30,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:14:30,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:30,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:14:30,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:14:30,927 INFO L87 Difference]: Start difference. First operand 22083 states and 27862 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 02:14:33,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:33,455 INFO L93 Difference]: Finished difference Result 33487 states and 42805 transitions. [2024-11-28 02:14:33,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:14:33,456 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 160 [2024-11-28 02:14:33,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:33,521 INFO L225 Difference]: With dead ends: 33487 [2024-11-28 02:14:33,521 INFO L226 Difference]: Without dead ends: 22362 [2024-11-28 02:14:33,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:14:33,548 INFO L435 NwaCegarLoop]: 304 mSDtfsCounter, 840 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:33,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 1220 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:14:33,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22362 states. [2024-11-28 02:14:35,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22362 to 22083. [2024-11-28 02:14:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22083 states, 18145 states have (on average 1.2395150179112704) internal successors, (22491), 18464 states have internal predecessors, (22491), 1985 states have call successors, (1985), 1442 states have call predecessors, (1985), 1951 states have return successors, (3314), 2177 states have call predecessors, (3314), 1984 states have call successors, (3314) [2024-11-28 02:14:35,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22083 states to 22083 states and 27790 transitions. [2024-11-28 02:14:35,450 INFO L78 Accepts]: Start accepts. Automaton has 22083 states and 27790 transitions. Word has length 160 [2024-11-28 02:14:35,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:35,450 INFO L471 AbstractCegarLoop]: Abstraction has 22083 states and 27790 transitions. [2024-11-28 02:14:35,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 02:14:35,451 INFO L276 IsEmpty]: Start isEmpty. Operand 22083 states and 27790 transitions. [2024-11-28 02:14:35,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 02:14:35,463 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:35,463 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-28 02:14:35,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-28 02:14:35,463 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:35,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:35,464 INFO L85 PathProgramCache]: Analyzing trace with hash 29496059, now seen corresponding path program 1 times [2024-11-28 02:14:35,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:35,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406902875] [2024-11-28 02:14:35,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:35,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-28 02:14:35,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:35,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406902875] [2024-11-28 02:14:35,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406902875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:35,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022215884] [2024-11-28 02:14:35,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:35,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:35,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:35,559 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:35,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:14:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:35,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:14:35,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 02:14:35,757 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:14:35,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022215884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:35,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:14:35,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-28 02:14:35,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357165690] [2024-11-28 02:14:35,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:35,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:14:35,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:35,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:14:35,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:14:35,758 INFO L87 Difference]: Start difference. First operand 22083 states and 27790 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:14:37,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:37,591 INFO L93 Difference]: Finished difference Result 38119 states and 48942 transitions. [2024-11-28 02:14:37,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:14:37,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 160 [2024-11-28 02:14:37,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:37,650 INFO L225 Difference]: With dead ends: 38119 [2024-11-28 02:14:37,650 INFO L226 Difference]: Without dead ends: 23946 [2024-11-28 02:14:37,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:14:37,674 INFO L435 NwaCegarLoop]: 306 mSDtfsCounter, 260 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:37,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 340 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:14:37,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23946 states. [2024-11-28 02:14:39,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23946 to 22740. [2024-11-28 02:14:39,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22740 states, 18777 states have (on average 1.217393619854077) internal successors, (22859), 19068 states have internal predecessors, (22859), 2004 states have call successors, (2004), 1504 states have call predecessors, (2004), 1957 states have return successors, (3003), 2168 states have call predecessors, (3003), 2003 states have call successors, (3003) [2024-11-28 02:14:39,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22740 states to 22740 states and 27866 transitions. [2024-11-28 02:14:39,571 INFO L78 Accepts]: Start accepts. Automaton has 22740 states and 27866 transitions. Word has length 160 [2024-11-28 02:14:39,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:39,572 INFO L471 AbstractCegarLoop]: Abstraction has 22740 states and 27866 transitions. [2024-11-28 02:14:39,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:14:39,572 INFO L276 IsEmpty]: Start isEmpty. Operand 22740 states and 27866 transitions. [2024-11-28 02:14:39,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-28 02:14:39,582 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:39,582 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-28 02:14:39,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:14:39,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 02:14:39,782 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:39,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:39,783 INFO L85 PathProgramCache]: Analyzing trace with hash -931066386, now seen corresponding path program 1 times [2024-11-28 02:14:39,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:39,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679911145] [2024-11-28 02:14:39,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:39,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-28 02:14:39,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:39,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679911145] [2024-11-28 02:14:39,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679911145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:39,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125070113] [2024-11-28 02:14:39,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:39,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:39,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:39,922 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:39,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:14:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:40,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:14:40,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 02:14:40,128 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:14:40,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125070113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:40,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:14:40,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2024-11-28 02:14:40,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239676449] [2024-11-28 02:14:40,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:40,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:14:40,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:40,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:14:40,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:14:40,130 INFO L87 Difference]: Start difference. First operand 22740 states and 27866 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:14:42,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:42,304 INFO L93 Difference]: Finished difference Result 36727 states and 46197 transitions. [2024-11-28 02:14:42,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:14:42,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 161 [2024-11-28 02:14:42,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:42,361 INFO L225 Difference]: With dead ends: 36727 [2024-11-28 02:14:42,361 INFO L226 Difference]: Without dead ends: 22389 [2024-11-28 02:14:42,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 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 02:14:42,382 INFO L435 NwaCegarLoop]: 304 mSDtfsCounter, 252 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:42,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 350 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:14:42,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22389 states. [2024-11-28 02:14:44,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22389 to 22335. [2024-11-28 02:14:44,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22335 states, 18559 states have (on average 1.2082008728918583) internal successors, (22423), 18773 states have internal predecessors, (22423), 1938 states have call successors, (1938), 1501 states have call predecessors, (1938), 1836 states have return successors, (2999), 2061 states have call predecessors, (2999), 1937 states have call successors, (2999) [2024-11-28 02:14:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22335 states to 22335 states and 27360 transitions. [2024-11-28 02:14:44,288 INFO L78 Accepts]: Start accepts. Automaton has 22335 states and 27360 transitions. Word has length 161 [2024-11-28 02:14:44,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:44,288 INFO L471 AbstractCegarLoop]: Abstraction has 22335 states and 27360 transitions. [2024-11-28 02:14:44,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 02:14:44,288 INFO L276 IsEmpty]: Start isEmpty. Operand 22335 states and 27360 transitions. [2024-11-28 02:14:44,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-28 02:14:44,294 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:44,295 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:14:44,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:14:44,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 02:14:44,495 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:44,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:44,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1590803582, now seen corresponding path program 1 times [2024-11-28 02:14:44,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:44,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036325043] [2024-11-28 02:14:44,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:44,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:44,580 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-28 02:14:44,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:44,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036325043] [2024-11-28 02:14:44,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036325043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:44,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360668126] [2024-11-28 02:14:44,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:44,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:44,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:44,584 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:44,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:14:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:44,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:14:44,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 02:14:44,742 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:14:44,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360668126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:44,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:14:44,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-28 02:14:44,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451914151] [2024-11-28 02:14:44,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:44,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:14:44,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:44,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:14:44,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:14:44,744 INFO L87 Difference]: Start difference. First operand 22335 states and 27360 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:14:46,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:46,345 INFO L93 Difference]: Finished difference Result 31846 states and 39139 transitions. [2024-11-28 02:14:46,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:14:46,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 161 [2024-11-28 02:14:46,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:46,399 INFO L225 Difference]: With dead ends: 31846 [2024-11-28 02:14:46,399 INFO L226 Difference]: Without dead ends: 20941 [2024-11-28 02:14:46,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:14:46,418 INFO L435 NwaCegarLoop]: 420 mSDtfsCounter, 137 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:46,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 710 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:14:46,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20941 states. [2024-11-28 02:14:48,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20941 to 20831. [2024-11-28 02:14:48,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20831 states, 17366 states have (on average 1.206495450881032) internal successors, (20952), 17579 states have internal predecessors, (20952), 1747 states have call successors, (1747), 1386 states have call predecessors, (1747), 1716 states have return successors, (2677), 1866 states have call predecessors, (2677), 1746 states have call successors, (2677) [2024-11-28 02:14:48,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20831 states to 20831 states and 25376 transitions. [2024-11-28 02:14:48,167 INFO L78 Accepts]: Start accepts. Automaton has 20831 states and 25376 transitions. Word has length 161 [2024-11-28 02:14:48,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:48,168 INFO L471 AbstractCegarLoop]: Abstraction has 20831 states and 25376 transitions. [2024-11-28 02:14:48,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-28 02:14:48,168 INFO L276 IsEmpty]: Start isEmpty. Operand 20831 states and 25376 transitions. [2024-11-28 02:14:48,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-28 02:14:48,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:48,173 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 02:14:48,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:14:48,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 02:14:48,374 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:48,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:48,374 INFO L85 PathProgramCache]: Analyzing trace with hash 947860562, now seen corresponding path program 1 times [2024-11-28 02:14:48,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:48,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606559365] [2024-11-28 02:14:48,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:48,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-28 02:14:48,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:48,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606559365] [2024-11-28 02:14:48,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606559365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:48,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806367888] [2024-11-28 02:14:48,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:48,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:48,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:48,459 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:48,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:14:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:48,588 INFO L256 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:14:48,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-28 02:14:48,632 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:14:48,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806367888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:48,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:14:48,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-11-28 02:14:48,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118075087] [2024-11-28 02:14:48,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:48,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:14:48,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:48,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:14:48,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:14:48,633 INFO L87 Difference]: Start difference. First operand 20831 states and 25376 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 02:14:50,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:50,277 INFO L93 Difference]: Finished difference Result 24075 states and 29168 transitions. [2024-11-28 02:14:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:14:50,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 169 [2024-11-28 02:14:50,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:50,319 INFO L225 Difference]: With dead ends: 24075 [2024-11-28 02:14:50,319 INFO L226 Difference]: Without dead ends: 16221 [2024-11-28 02:14:50,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:14:50,330 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 371 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:50,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 458 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:14:50,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16221 states. [2024-11-28 02:14:51,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16221 to 15821. [2024-11-28 02:14:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15821 states, 13470 states have (on average 1.2152932442464737) internal successors, (16370), 13612 states have internal predecessors, (16370), 1214 states have call successors, (1214), 951 states have call predecessors, (1214), 1135 states have return successors, (1731), 1258 states have call predecessors, (1731), 1213 states have call successors, (1731) [2024-11-28 02:14:51,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15821 states to 15821 states and 19315 transitions. [2024-11-28 02:14:51,456 INFO L78 Accepts]: Start accepts. Automaton has 15821 states and 19315 transitions. Word has length 169 [2024-11-28 02:14:51,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:51,456 INFO L471 AbstractCegarLoop]: Abstraction has 15821 states and 19315 transitions. [2024-11-28 02:14:51,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 02:14:51,457 INFO L276 IsEmpty]: Start isEmpty. Operand 15821 states and 19315 transitions. [2024-11-28 02:14:51,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-28 02:14:51,459 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:51,459 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-28 02:14:51,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:14:51,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:51,660 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:51,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:51,660 INFO L85 PathProgramCache]: Analyzing trace with hash -315518589, now seen corresponding path program 1 times [2024-11-28 02:14:51,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:51,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342213723] [2024-11-28 02:14:51,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:51,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-28 02:14:51,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:51,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342213723] [2024-11-28 02:14:51,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342213723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:51,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:14:51,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:14:51,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100232337] [2024-11-28 02:14:51,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:51,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:14:51,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:51,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:14:51,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:14:51,793 INFO L87 Difference]: Start difference. First operand 15821 states and 19315 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 02:14:53,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:53,779 INFO L93 Difference]: Finished difference Result 30602 states and 38701 transitions. [2024-11-28 02:14:53,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:14:53,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 162 [2024-11-28 02:14:53,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:53,820 INFO L225 Difference]: With dead ends: 30602 [2024-11-28 02:14:53,820 INFO L226 Difference]: Without dead ends: 17567 [2024-11-28 02:14:53,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:14:53,837 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 846 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:53,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 756 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:14:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17567 states. [2024-11-28 02:14:55,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17567 to 17350. [2024-11-28 02:14:55,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17350 states, 14808 states have (on average 1.190977849810913) internal successors, (17636), 14999 states have internal predecessors, (17636), 1267 states have call successors, (1267), 1034 states have call predecessors, (1267), 1273 states have return successors, (1905), 1317 states have call predecessors, (1905), 1266 states have call successors, (1905) [2024-11-28 02:14:55,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17350 states to 17350 states and 20808 transitions. [2024-11-28 02:14:55,081 INFO L78 Accepts]: Start accepts. Automaton has 17350 states and 20808 transitions. Word has length 162 [2024-11-28 02:14:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:55,081 INFO L471 AbstractCegarLoop]: Abstraction has 17350 states and 20808 transitions. [2024-11-28 02:14:55,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 02:14:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 17350 states and 20808 transitions. [2024-11-28 02:14:55,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-28 02:14:55,087 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:55,087 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:55,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-28 02:14:55,087 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:55,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:55,088 INFO L85 PathProgramCache]: Analyzing trace with hash 124334428, now seen corresponding path program 1 times [2024-11-28 02:14:55,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:55,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979112865] [2024-11-28 02:14:55,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:55,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 35 proven. 15 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-28 02:14:55,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:55,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979112865] [2024-11-28 02:14:55,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979112865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:55,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847163188] [2024-11-28 02:14:55,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:55,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:55,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:55,142 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:55,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:14:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:55,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:14:55,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 02:14:55,328 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:14:55,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847163188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:55,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:14:55,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2024-11-28 02:14:55,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843677659] [2024-11-28 02:14:55,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:55,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:14:55,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:55,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:14:55,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:14:55,330 INFO L87 Difference]: Start difference. First operand 17350 states and 20808 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 02:14:56,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:56,659 INFO L93 Difference]: Finished difference Result 27657 states and 33806 transitions. [2024-11-28 02:14:56,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:14:56,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 196 [2024-11-28 02:14:56,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:56,700 INFO L225 Difference]: With dead ends: 27657 [2024-11-28 02:14:56,700 INFO L226 Difference]: Without dead ends: 17040 [2024-11-28 02:14:56,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 197 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 02:14:56,713 INFO L435 NwaCegarLoop]: 387 mSDtfsCounter, 125 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:56,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 668 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:14:56,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17040 states. [2024-11-28 02:14:57,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17040 to 17020. [2024-11-28 02:14:57,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17020 states, 14478 states have (on average 1.1766127918220748) internal successors, (17035), 14669 states have internal predecessors, (17035), 1267 states have call successors, (1267), 1034 states have call predecessors, (1267), 1273 states have return successors, (1905), 1317 states have call predecessors, (1905), 1266 states have call successors, (1905) [2024-11-28 02:14:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17020 states to 17020 states and 20207 transitions. [2024-11-28 02:14:57,965 INFO L78 Accepts]: Start accepts. Automaton has 17020 states and 20207 transitions. Word has length 196 [2024-11-28 02:14:57,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:14:57,966 INFO L471 AbstractCegarLoop]: Abstraction has 17020 states and 20207 transitions. [2024-11-28 02:14:57,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 02:14:57,966 INFO L276 IsEmpty]: Start isEmpty. Operand 17020 states and 20207 transitions. [2024-11-28 02:14:57,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-28 02:14:57,970 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:14:57,971 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:57,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 02:14:58,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:58,171 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:14:58,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:14:58,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1974287264, now seen corresponding path program 1 times [2024-11-28 02:14:58,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:14:58,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608234467] [2024-11-28 02:14:58,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:58,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 61 proven. 20 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-28 02:14:58,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:58,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608234467] [2024-11-28 02:14:58,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608234467] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:58,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984502803] [2024-11-28 02:14:58,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:58,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:58,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:58,213 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:58,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:14:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:58,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:14:58,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:14:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 02:14:58,366 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:14:58,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984502803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:14:58,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:14:58,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2024-11-28 02:14:58,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356493720] [2024-11-28 02:14:58,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:14:58,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:14:58,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:58,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:14:58,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:14:58,368 INFO L87 Difference]: Start difference. First operand 17020 states and 20207 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 02:14:59,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:14:59,643 INFO L93 Difference]: Finished difference Result 28135 states and 34022 transitions. [2024-11-28 02:14:59,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:14:59,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 198 [2024-11-28 02:14:59,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:14:59,686 INFO L225 Difference]: With dead ends: 28135 [2024-11-28 02:14:59,686 INFO L226 Difference]: Without dead ends: 16366 [2024-11-28 02:14:59,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 199 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 02:14:59,701 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 143 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:14:59,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 654 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:14:59,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16366 states. [2024-11-28 02:15:00,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16366 to 16348. [2024-11-28 02:15:00,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16348 states, 13850 states have (on average 1.1635379061371842) internal successors, (16115), 14029 states have internal predecessors, (16115), 1247 states have call successors, (1247), 1014 states have call predecessors, (1247), 1249 states have return successors, (1881), 1305 states have call predecessors, (1881), 1246 states have call successors, (1881) [2024-11-28 02:15:00,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16348 states to 16348 states and 19243 transitions. [2024-11-28 02:15:00,955 INFO L78 Accepts]: Start accepts. Automaton has 16348 states and 19243 transitions. Word has length 198 [2024-11-28 02:15:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:00,956 INFO L471 AbstractCegarLoop]: Abstraction has 16348 states and 19243 transitions. [2024-11-28 02:15:00,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 02:15:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 16348 states and 19243 transitions. [2024-11-28 02:15:00,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-28 02:15:00,961 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:00,962 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:00,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:15:01,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:01,162 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:01,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:01,163 INFO L85 PathProgramCache]: Analyzing trace with hash -61254671, now seen corresponding path program 1 times [2024-11-28 02:15:01,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:15:01,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433757238] [2024-11-28 02:15:01,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:01,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:15:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-28 02:15:01,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:15:01,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433757238] [2024-11-28 02:15:01,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433757238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:01,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:01,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:15:01,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180559547] [2024-11-28 02:15:01,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:01,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:15:01,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:15:01,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:15:01,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:15:01,274 INFO L87 Difference]: Start difference. First operand 16348 states and 19243 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 02:15:04,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:04,612 INFO L93 Difference]: Finished difference Result 50906 states and 60898 transitions. [2024-11-28 02:15:04,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:15:04,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 199 [2024-11-28 02:15:04,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:04,824 INFO L225 Difference]: With dead ends: 50906 [2024-11-28 02:15:04,825 INFO L226 Difference]: Without dead ends: 41052 [2024-11-28 02:15:04,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:15:04,838 INFO L435 NwaCegarLoop]: 578 mSDtfsCounter, 546 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:15:04,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1540 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:15:04,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41052 states. [2024-11-28 02:15:07,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41052 to 36923. [2024-11-28 02:15:07,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36923 states, 31453 states have (on average 1.1773757670174547) internal successors, (37032), 31884 states have internal predecessors, (37032), 2739 states have call successors, (2739), 2226 states have call predecessors, (2739), 2729 states have return successors, (4373), 2813 states have call predecessors, (4373), 2738 states have call successors, (4373) [2024-11-28 02:15:07,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36923 states to 36923 states and 44144 transitions. [2024-11-28 02:15:07,857 INFO L78 Accepts]: Start accepts. Automaton has 36923 states and 44144 transitions. Word has length 199 [2024-11-28 02:15:07,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:07,858 INFO L471 AbstractCegarLoop]: Abstraction has 36923 states and 44144 transitions. [2024-11-28 02:15:07,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 02:15:07,858 INFO L276 IsEmpty]: Start isEmpty. Operand 36923 states and 44144 transitions. [2024-11-28 02:15:07,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-28 02:15:07,866 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:07,867 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 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] [2024-11-28 02:15:07,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-28 02:15:07,867 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:07,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:07,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1220125738, now seen corresponding path program 1 times [2024-11-28 02:15:07,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:15:07,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712902109] [2024-11-28 02:15:07,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:07,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:15:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-28 02:15:07,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:15:07,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712902109] [2024-11-28 02:15:07,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712902109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:15:07,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283846710] [2024-11-28 02:15:07,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:07,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:07,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:07,950 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:07,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:15:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:08,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:15:08,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:08,230 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-28 02:15:08,230 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:15:08,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283846710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:08,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:15:08,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 02:15:08,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139659247] [2024-11-28 02:15:08,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:08,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:15:08,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:15:08,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:15:08,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:15:08,231 INFO L87 Difference]: Start difference. First operand 36923 states and 44144 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 02:15:10,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:10,940 INFO L93 Difference]: Finished difference Result 36930 states and 44150 transitions. [2024-11-28 02:15:10,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:15:10,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 231 [2024-11-28 02:15:10,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:11,029 INFO L225 Difference]: With dead ends: 36930 [2024-11-28 02:15:11,030 INFO L226 Difference]: Without dead ends: 36385 [2024-11-28 02:15:11,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:15:11,043 INFO L435 NwaCegarLoop]: 293 mSDtfsCounter, 203 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:15:11,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 393 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:15:11,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36385 states. [2024-11-28 02:15:14,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36385 to 36381. [2024-11-28 02:15:14,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36381 states, 31038 states have (on average 1.1779753850119208) internal successors, (36562), 31462 states have internal predecessors, (36562), 2678 states have call successors, (2678), 2174 states have call predecessors, (2678), 2663 states have return successors, (4283), 2745 states have call predecessors, (4283), 2677 states have call successors, (4283) [2024-11-28 02:15:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36381 states to 36381 states and 43523 transitions. [2024-11-28 02:15:14,242 INFO L78 Accepts]: Start accepts. Automaton has 36381 states and 43523 transitions. Word has length 231 [2024-11-28 02:15:14,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:14,242 INFO L471 AbstractCegarLoop]: Abstraction has 36381 states and 43523 transitions. [2024-11-28 02:15:14,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 02:15:14,242 INFO L276 IsEmpty]: Start isEmpty. Operand 36381 states and 43523 transitions. [2024-11-28 02:15:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-28 02:15:14,248 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:14,248 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 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] [2024-11-28 02:15:14,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:15:14,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-28 02:15:14,449 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:14,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:14,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1064250022, now seen corresponding path program 1 times [2024-11-28 02:15:14,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:15:14,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163507757] [2024-11-28 02:15:14,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:14,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:15:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 54 proven. 7 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-11-28 02:15:14,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:15:14,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163507757] [2024-11-28 02:15:14,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163507757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:15:14,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670805022] [2024-11-28 02:15:14,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:14,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:14,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:15:14,534 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:15:14,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21ce0ed5-c22b-4331-8307-0acf2c075a2f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:15:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:14,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:15:14,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-28 02:15:14,744 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:15:14,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670805022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:14,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:15:14,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 02:15:14,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932219950] [2024-11-28 02:15:14,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:14,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:15:14,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:15:14,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:15:14,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:15:14,745 INFO L87 Difference]: Start difference. First operand 36381 states and 43523 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-28 02:15:18,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:18,573 INFO L93 Difference]: Finished difference Result 38587 states and 46094 transitions. [2024-11-28 02:15:18,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:15:18,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 239 [2024-11-28 02:15:18,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:18,656 INFO L225 Difference]: With dead ends: 38587 [2024-11-28 02:15:18,656 INFO L226 Difference]: Without dead ends: 36767 [2024-11-28 02:15:18,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 239 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 02:15:18,667 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 320 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:15:18,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 436 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:15:18,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36767 states.