./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.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_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/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_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/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_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/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 a61ec0d9e8ff01aa8900ac2d4a87b40f68db963fb1a53c6fbb2c11c91e3dd345 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:29:57,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:29:57,666 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:29:57,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:29:57,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:29:57,706 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:29:57,707 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:29:57,707 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:29:57,708 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:29:57,708 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:29:57,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:29:57,708 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:29:57,709 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:29:57,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:29:57,709 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:29:57,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:29:57,710 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:29:57,710 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:29:57,710 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:29:57,710 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:29:57,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:29:57,711 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:29:57,711 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:29:57,711 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:29:57,711 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:29:57,711 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:29:57,711 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:29:57,711 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:29:57,712 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:29:57,712 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:29:57,712 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:29:57,713 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:29:57,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:29:57,713 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:29:57,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:29:57,713 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:29:57,714 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:29:57,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:29:57,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:29:57,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:29:57,714 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:29:57,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:29:57,715 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:29:57,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:29:57,715 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:29:57,715 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:29:57,715 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:29:57,716 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:29:57,716 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_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/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 -> a61ec0d9e8ff01aa8900ac2d4a87b40f68db963fb1a53c6fbb2c11c91e3dd345 [2024-11-27 20:29:58,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:29:58,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:29:58,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:29:58,160 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:29:58,160 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:29:58,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2024-11-27 20:30:01,788 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/bin/uautomizer-verify-aQ6SnzHsRB/data/cab9eec3f/ef23eac843e34dbc96754fad3e6bff97/FLAG18bb7f745 [2024-11-27 20:30:02,258 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:30:02,259 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2024-11-27 20:30:02,279 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/bin/uautomizer-verify-aQ6SnzHsRB/data/cab9eec3f/ef23eac843e34dbc96754fad3e6bff97/FLAG18bb7f745 [2024-11-27 20:30:02,306 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/bin/uautomizer-verify-aQ6SnzHsRB/data/cab9eec3f/ef23eac843e34dbc96754fad3e6bff97 [2024-11-27 20:30:02,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:30:02,311 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:30:02,313 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:30:02,314 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:30:02,325 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:30:02,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:30:02" (1/1) ... [2024-11-27 20:30:02,326 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc14b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:02, skipping insertion in model container [2024-11-27 20:30:02,327 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:30:02" (1/1) ... [2024-11-27 20:30:02,379 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:30:02,611 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_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[914,927] [2024-11-27 20:30:02,725 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_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[7115,7128] [2024-11-27 20:30:02,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:30:02,809 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:30:02,826 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_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[914,927] [2024-11-27 20:30:02,887 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_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[7115,7128] [2024-11-27 20:30:02,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:30:02,988 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:30:02,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:02 WrapperNode [2024-11-27 20:30:02,989 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:30:02,990 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:30:02,990 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:30:02,991 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:30:03,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:02" (1/1) ... [2024-11-27 20:30:03,032 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:02" (1/1) ... [2024-11-27 20:30:03,099 INFO L138 Inliner]: procedures = 61, calls = 70, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 583 [2024-11-27 20:30:03,099 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:30:03,103 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:30:03,104 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:30:03,104 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:30:03,117 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:02" (1/1) ... [2024-11-27 20:30:03,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:02" (1/1) ... [2024-11-27 20:30:03,126 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:02" (1/1) ... [2024-11-27 20:30:03,150 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:30:03,151 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:02" (1/1) ... [2024-11-27 20:30:03,151 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:02" (1/1) ... [2024-11-27 20:30:03,174 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:02" (1/1) ... [2024-11-27 20:30:03,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:02" (1/1) ... [2024-11-27 20:30:03,201 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:02" (1/1) ... [2024-11-27 20:30:03,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:02" (1/1) ... [2024-11-27 20:30:03,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:02" (1/1) ... [2024-11-27 20:30:03,219 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:30:03,220 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:30:03,221 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:30:03,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:30:03,224 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:02" (1/1) ... [2024-11-27 20:30:03,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:30:03,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:03,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:30:03,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:30:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:30:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-27 20:30:03,341 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-27 20:30:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-27 20:30:03,341 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-27 20:30:03,341 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-27 20:30:03,341 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-27 20:30:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-27 20:30:03,342 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-27 20:30:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-27 20:30:03,342 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-27 20:30:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-27 20:30:03,342 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-27 20:30:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-27 20:30:03,342 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-27 20:30:03,342 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-27 20:30:03,342 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-27 20:30:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-27 20:30:03,343 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-27 20:30:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-27 20:30:03,343 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-27 20:30:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-27 20:30:03,343 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-27 20:30:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:30:03,343 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-27 20:30:03,343 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-27 20:30:03,344 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-27 20:30:03,344 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-27 20:30:03,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:30:03,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:30:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-27 20:30:03,346 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-27 20:30:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-27 20:30:03,346 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-27 20:30:03,526 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:30:03,529 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:30:04,636 INFO L? ?]: Removed 83 outVars from TransFormulas that were not future-live. [2024-11-27 20:30:04,637 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:30:04,657 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:30:04,657 INFO L312 CfgBuilder]: Removed 22 assume(true) statements. [2024-11-27 20:30:04,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:30:04 BoogieIcfgContainer [2024-11-27 20:30:04,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:30:04,661 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:30:04,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:30:04,667 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:30:04,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:30:02" (1/3) ... [2024-11-27 20:30:04,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c1075a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:30:04, skipping insertion in model container [2024-11-27 20:30:04,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:30:02" (2/3) ... [2024-11-27 20:30:04,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c1075a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:30:04, skipping insertion in model container [2024-11-27 20:30:04,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:30:04" (3/3) ... [2024-11-27 20:30:04,670 INFO L128 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2024-11-27 20:30:04,695 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:30:04,700 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pc_sfifo_2.cil-1+token_ring.04.cil-2.c that has 16 procedures, 285 locations, 1 initial locations, 11 loop locations, and 2 error locations. [2024-11-27 20:30:04,787 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:30:04,802 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;@2d37dc7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:30:04,802 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-27 20:30:04,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 285 states, 235 states have (on average 1.5957446808510638) internal successors, (375), 241 states have internal predecessors, (375), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-27 20:30:04,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 20:30:04,819 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:04,820 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] [2024-11-27 20:30:04,821 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:04,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:04,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1938459549, now seen corresponding path program 1 times [2024-11-27 20:30:04,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:04,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927358158] [2024-11-27 20:30:04,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:04,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:05,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:05,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927358158] [2024-11-27 20:30:05,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927358158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:05,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:05,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:30:05,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855579358] [2024-11-27 20:30:05,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:05,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:30:05,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:05,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:30:05,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:05,706 INFO L87 Difference]: Start difference. First operand has 285 states, 235 states have (on average 1.5957446808510638) internal successors, (375), 241 states have internal predecessors, (375), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) 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) [2024-11-27 20:30:07,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:07,185 INFO L93 Difference]: Finished difference Result 687 states and 1064 transitions. [2024-11-27 20:30:07,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:30:07,188 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 [2024-11-27 20:30:07,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:07,208 INFO L225 Difference]: With dead ends: 687 [2024-11-27 20:30:07,208 INFO L226 Difference]: Without dead ends: 412 [2024-11-27 20:30:07,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:30:07,220 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 595 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:07,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 1168 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:30:07,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-27 20:30:07,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 370. [2024-11-27 20:30:07,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 300 states have (on average 1.4966666666666666) internal successors, (449), 308 states have internal predecessors, (449), 45 states have call successors, (45), 22 states have call predecessors, (45), 23 states have return successors, (52), 42 states have call predecessors, (52), 41 states have call successors, (52) [2024-11-27 20:30:07,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 546 transitions. [2024-11-27 20:30:07,382 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 546 transitions. Word has length 62 [2024-11-27 20:30:07,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:07,383 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 546 transitions. [2024-11-27 20:30:07,384 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) [2024-11-27 20:30:07,384 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 546 transitions. [2024-11-27 20:30:07,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 20:30:07,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:07,391 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] [2024-11-27 20:30:07,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:30:07,392 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:07,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:07,394 INFO L85 PathProgramCache]: Analyzing trace with hash -417345701, now seen corresponding path program 1 times [2024-11-27 20:30:07,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:07,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127027012] [2024-11-27 20:30:07,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:07,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:07,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:07,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:07,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127027012] [2024-11-27 20:30:07,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127027012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:07,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:07,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:30:07,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627947237] [2024-11-27 20:30:07,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:07,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:30:07,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:07,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:30:07,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:07,644 INFO L87 Difference]: Start difference. First operand 370 states and 546 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) [2024-11-27 20:30:07,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:07,739 INFO L93 Difference]: Finished difference Result 553 states and 803 transitions. [2024-11-27 20:30:07,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:30:07,740 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 [2024-11-27 20:30:07,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:07,745 INFO L225 Difference]: With dead ends: 553 [2024-11-27 20:30:07,745 INFO L226 Difference]: Without dead ends: 380 [2024-11-27 20:30:07,747 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 [2024-11-27 20:30:07,748 INFO L435 NwaCegarLoop]: 402 mSDtfsCounter, 0 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2005 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 [2024-11-27 20:30:07,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2005 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:07,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-27 20:30:07,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2024-11-27 20:30:07,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 308 states have (on average 1.4837662337662338) internal successors, (457), 316 states have internal predecessors, (457), 45 states have call successors, (45), 22 states have call predecessors, (45), 25 states have return successors, (54), 44 states have call predecessors, (54), 41 states have call successors, (54) [2024-11-27 20:30:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 556 transitions. [2024-11-27 20:30:07,839 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 556 transitions. Word has length 62 [2024-11-27 20:30:07,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:07,843 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 556 transitions. [2024-11-27 20:30:07,843 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) [2024-11-27 20:30:07,843 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 556 transitions. [2024-11-27 20:30:07,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 20:30:07,847 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:07,851 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] [2024-11-27 20:30:07,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:30:07,851 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:07,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:07,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1261351203, now seen corresponding path program 1 times [2024-11-27 20:30:07,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:07,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367965955] [2024-11-27 20:30:07,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:07,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:08,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:08,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:08,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367965955] [2024-11-27 20:30:08,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367965955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:08,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:08,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:30:08,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768384308] [2024-11-27 20:30:08,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:08,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:30:08,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:08,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:30:08,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:08,073 INFO L87 Difference]: Start difference. First operand 380 states and 556 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) [2024-11-27 20:30:08,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:08,169 INFO L93 Difference]: Finished difference Result 573 states and 823 transitions. [2024-11-27 20:30:08,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:30:08,170 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 [2024-11-27 20:30:08,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:08,176 INFO L225 Difference]: With dead ends: 573 [2024-11-27 20:30:08,176 INFO L226 Difference]: Without dead ends: 390 [2024-11-27 20:30:08,178 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 [2024-11-27 20:30:08,182 INFO L435 NwaCegarLoop]: 402 mSDtfsCounter, 0 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2005 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 [2024-11-27 20:30:08,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2005 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:08,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-27 20:30:08,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2024-11-27 20:30:08,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 316 states have (on average 1.4715189873417722) internal successors, (465), 324 states have internal predecessors, (465), 45 states have call successors, (45), 22 states have call predecessors, (45), 27 states have return successors, (56), 46 states have call predecessors, (56), 41 states have call successors, (56) [2024-11-27 20:30:08,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 566 transitions. [2024-11-27 20:30:08,254 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 566 transitions. Word has length 62 [2024-11-27 20:30:08,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:08,256 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 566 transitions. [2024-11-27 20:30:08,256 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) [2024-11-27 20:30:08,257 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 566 transitions. [2024-11-27 20:30:08,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 20:30:08,260 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:08,260 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] [2024-11-27 20:30:08,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:30:08,260 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:08,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:08,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1199311589, now seen corresponding path program 1 times [2024-11-27 20:30:08,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:08,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203003668] [2024-11-27 20:30:08,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:08,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:08,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:08,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203003668] [2024-11-27 20:30:08,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203003668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:08,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:08,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:30:08,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872044058] [2024-11-27 20:30:08,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:08,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:30:08,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:08,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:30:08,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:30:08,555 INFO L87 Difference]: Start difference. First operand 390 states and 566 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) [2024-11-27 20:30:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:09,542 INFO L93 Difference]: Finished difference Result 703 states and 1002 transitions. [2024-11-27 20:30:09,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:30:09,544 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 [2024-11-27 20:30:09,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:09,552 INFO L225 Difference]: With dead ends: 703 [2024-11-27 20:30:09,552 INFO L226 Difference]: Without dead ends: 509 [2024-11-27 20:30:09,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:30:09,556 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 318 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:09,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 870 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:30:09,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2024-11-27 20:30:09,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 478. [2024-11-27 20:30:09,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 385 states have (on average 1.4441558441558442) internal successors, (556), 394 states have internal predecessors, (556), 56 states have call successors, (56), 29 states have call predecessors, (56), 35 states have return successors, (69), 58 states have call predecessors, (69), 52 states have call successors, (69) [2024-11-27 20:30:09,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 681 transitions. [2024-11-27 20:30:09,631 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 681 transitions. Word has length 62 [2024-11-27 20:30:09,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:09,631 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 681 transitions. [2024-11-27 20:30:09,632 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) [2024-11-27 20:30:09,632 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 681 transitions. [2024-11-27 20:30:09,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 20:30:09,635 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:09,635 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] [2024-11-27 20:30:09,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:30:09,635 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:09,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:09,636 INFO L85 PathProgramCache]: Analyzing trace with hash -980456871, now seen corresponding path program 1 times [2024-11-27 20:30:09,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:09,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315177538] [2024-11-27 20:30:09,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:09,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:09,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:09,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:09,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315177538] [2024-11-27 20:30:09,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315177538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:09,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:09,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:30:09,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007747149] [2024-11-27 20:30:09,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:09,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:30:09,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:09,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:30:09,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:09,880 INFO L87 Difference]: Start difference. First operand 478 states and 681 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) [2024-11-27 20:30:11,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:11,066 INFO L93 Difference]: Finished difference Result 837 states and 1150 transitions. [2024-11-27 20:30:11,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:30:11,068 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 [2024-11-27 20:30:11,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:11,075 INFO L225 Difference]: With dead ends: 837 [2024-11-27 20:30:11,075 INFO L226 Difference]: Without dead ends: 564 [2024-11-27 20:30:11,077 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 [2024-11-27 20:30:11,079 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 589 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:11,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 954 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:30:11,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-27 20:30:11,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 490. [2024-11-27 20:30:11,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 395 states have (on average 1.4329113924050634) internal successors, (566), 404 states have internal predecessors, (566), 57 states have call successors, (57), 30 states have call predecessors, (57), 36 states have return successors, (68), 59 states have call predecessors, (68), 53 states have call successors, (68) [2024-11-27 20:30:11,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 691 transitions. [2024-11-27 20:30:11,143 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 691 transitions. Word has length 62 [2024-11-27 20:30:11,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:11,143 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 691 transitions. [2024-11-27 20:30:11,144 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) [2024-11-27 20:30:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 691 transitions. [2024-11-27 20:30:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 20:30:11,146 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:11,146 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] [2024-11-27 20:30:11,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:30:11,147 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:11,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:11,147 INFO L85 PathProgramCache]: Analyzing trace with hash -557755045, now seen corresponding path program 1 times [2024-11-27 20:30:11,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:11,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797887416] [2024-11-27 20:30:11,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:11,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:11,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:11,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:11,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797887416] [2024-11-27 20:30:11,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797887416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:11,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:11,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:30:11,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547324209] [2024-11-27 20:30:11,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:11,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:30:11,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:11,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:30:11,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:30:11,242 INFO L87 Difference]: Start difference. First operand 490 states and 691 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) [2024-11-27 20:30:11,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:11,905 INFO L93 Difference]: Finished difference Result 1059 states and 1446 transitions. [2024-11-27 20:30:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:30:11,906 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 [2024-11-27 20:30:11,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:11,912 INFO L225 Difference]: With dead ends: 1059 [2024-11-27 20:30:11,913 INFO L226 Difference]: Without dead ends: 775 [2024-11-27 20:30:11,914 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 [2024-11-27 20:30:11,915 INFO L435 NwaCegarLoop]: 232 mSDtfsCounter, 551 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:11,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 470 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:30:11,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2024-11-27 20:30:12,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 771. [2024-11-27 20:30:12,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 610 states have (on average 1.383606557377049) internal successors, (844), 626 states have internal predecessors, (844), 92 states have call successors, (92), 52 states have call predecessors, (92), 67 states have return successors, (125), 99 states have call predecessors, (125), 88 states have call successors, (125) [2024-11-27 20:30:12,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 1061 transitions. [2024-11-27 20:30:12,037 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 1061 transitions. Word has length 62 [2024-11-27 20:30:12,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:12,037 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 1061 transitions. [2024-11-27 20:30:12,038 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) [2024-11-27 20:30:12,038 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 1061 transitions. [2024-11-27 20:30:12,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-27 20:30:12,042 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:12,042 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] [2024-11-27 20:30:12,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:30:12,043 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:12,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:12,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1202812949, now seen corresponding path program 1 times [2024-11-27 20:30:12,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:12,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237398256] [2024-11-27 20:30:12,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:12,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:12,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:12,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:12,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237398256] [2024-11-27 20:30:12,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237398256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:12,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:12,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:30:12,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986880407] [2024-11-27 20:30:12,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:12,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:12,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:12,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:12,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:12,139 INFO L87 Difference]: Start difference. First operand 771 states and 1061 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) [2024-11-27 20:30:12,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:12,293 INFO L93 Difference]: Finished difference Result 1840 states and 2478 transitions. [2024-11-27 20:30:12,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:12,294 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 [2024-11-27 20:30:12,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:12,302 INFO L225 Difference]: With dead ends: 1840 [2024-11-27 20:30:12,302 INFO L226 Difference]: Without dead ends: 1254 [2024-11-27 20:30:12,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:12,304 INFO L435 NwaCegarLoop]: 401 mSDtfsCounter, 102 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:12,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 771 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:12,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2024-11-27 20:30:12,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1231. [2024-11-27 20:30:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 968 states have (on average 1.3471074380165289) internal successors, (1304), 987 states have internal predecessors, (1304), 137 states have call successors, (137), 96 states have call predecessors, (137), 124 states have return successors, (197), 154 states have call predecessors, (197), 133 states have call successors, (197) [2024-11-27 20:30:12,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1638 transitions. [2024-11-27 20:30:12,439 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1638 transitions. Word has length 63 [2024-11-27 20:30:12,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:12,440 INFO L471 AbstractCegarLoop]: Abstraction has 1231 states and 1638 transitions. [2024-11-27 20:30:12,440 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) [2024-11-27 20:30:12,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1638 transitions. [2024-11-27 20:30:12,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 20:30:12,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:12,443 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] [2024-11-27 20:30:12,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:30:12,443 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:12,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:12,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1643796714, now seen corresponding path program 1 times [2024-11-27 20:30:12,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:12,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362280803] [2024-11-27 20:30:12,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:12,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:12,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:12,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:12,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362280803] [2024-11-27 20:30:12,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362280803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:12,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:12,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:30:12,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873883812] [2024-11-27 20:30:12,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:12,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:12,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:12,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:12,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:12,496 INFO L87 Difference]: Start difference. First operand 1231 states and 1638 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-27 20:30:12,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:12,765 INFO L93 Difference]: Finished difference Result 3175 states and 4171 transitions. [2024-11-27 20:30:12,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:12,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 64 [2024-11-27 20:30:12,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:12,780 INFO L225 Difference]: With dead ends: 3175 [2024-11-27 20:30:12,780 INFO L226 Difference]: Without dead ends: 2149 [2024-11-27 20:30:12,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:12,785 INFO L435 NwaCegarLoop]: 403 mSDtfsCounter, 376 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:12,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 507 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:12,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2024-11-27 20:30:12,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2063. [2024-11-27 20:30:13,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2063 states, 1604 states have (on average 1.309850374064838) internal successors, (2101), 1633 states have internal predecessors, (2101), 235 states have call successors, (235), 180 states have call predecessors, (235), 222 states have return successors, (333), 256 states have call predecessors, (333), 231 states have call successors, (333) [2024-11-27 20:30:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2063 states to 2063 states and 2669 transitions. [2024-11-27 20:30:13,020 INFO L78 Accepts]: Start accepts. Automaton has 2063 states and 2669 transitions. Word has length 64 [2024-11-27 20:30:13,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:13,020 INFO L471 AbstractCegarLoop]: Abstraction has 2063 states and 2669 transitions. [2024-11-27 20:30:13,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-27 20:30:13,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2063 states and 2669 transitions. [2024-11-27 20:30:13,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-27 20:30:13,024 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:13,024 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] [2024-11-27 20:30:13,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:30:13,024 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:13,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:13,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1336243933, now seen corresponding path program 1 times [2024-11-27 20:30:13,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:13,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585324273] [2024-11-27 20:30:13,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:13,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:13,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:13,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585324273] [2024-11-27 20:30:13,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585324273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:13,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:13,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:30:13,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358982931] [2024-11-27 20:30:13,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:13,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:30:13,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:13,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:30:13,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:30:13,175 INFO L87 Difference]: Start difference. First operand 2063 states and 2669 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) [2024-11-27 20:30:13,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:13,738 INFO L93 Difference]: Finished difference Result 2848 states and 3643 transitions. [2024-11-27 20:30:13,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:30:13,739 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 [2024-11-27 20:30:13,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:13,759 INFO L225 Difference]: With dead ends: 2848 [2024-11-27 20:30:13,759 INFO L226 Difference]: Without dead ends: 2845 [2024-11-27 20:30:13,761 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 [2024-11-27 20:30:13,762 INFO L435 NwaCegarLoop]: 408 mSDtfsCounter, 752 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:13,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 494 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:30:13,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2024-11-27 20:30:14,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2812. [2024-11-27 20:30:14,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2176 states have (on average 1.2941176470588236) internal successors, (2816), 2215 states have internal predecessors, (2816), 318 states have call successors, (318), 252 states have call predecessors, (318), 316 states have return successors, (458), 351 states have call predecessors, (458), 315 states have call successors, (458) [2024-11-27 20:30:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 3592 transitions. [2024-11-27 20:30:14,130 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 3592 transitions. Word has length 68 [2024-11-27 20:30:14,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:14,130 INFO L471 AbstractCegarLoop]: Abstraction has 2812 states and 3592 transitions. [2024-11-27 20:30:14,131 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) [2024-11-27 20:30:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 3592 transitions. [2024-11-27 20:30:14,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-27 20:30:14,138 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:14,138 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] [2024-11-27 20:30:14,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:30:14,138 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:14,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:14,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1525245130, now seen corresponding path program 1 times [2024-11-27 20:30:14,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:14,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600801022] [2024-11-27 20:30:14,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:14,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:14,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:14,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600801022] [2024-11-27 20:30:14,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600801022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:14,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543090874] [2024-11-27 20:30:14,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:14,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:14,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:14,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:14,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:30:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:14,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:30:14,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:14,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:14,997 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:30:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:15,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543090874] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:30:15,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:30:15,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-27 20:30:15,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532217700] [2024-11-27 20:30:15,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:30:15,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:30:15,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:15,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:30:15,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:30:15,171 INFO L87 Difference]: Start difference. First operand 2812 states and 3592 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) [2024-11-27 20:30:16,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:16,573 INFO L93 Difference]: Finished difference Result 6595 states and 8375 transitions. [2024-11-27 20:30:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:30:16,574 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 [2024-11-27 20:30:16,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:16,625 INFO L225 Difference]: With dead ends: 6595 [2024-11-27 20:30:16,626 INFO L226 Difference]: Without dead ends: 6592 [2024-11-27 20:30:16,630 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 [2024-11-27 20:30:16,632 INFO L435 NwaCegarLoop]: 594 mSDtfsCounter, 794 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:16,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1779 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:30:16,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6592 states. [2024-11-27 20:30:17,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6592 to 4539. [2024-11-27 20:30:17,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4539 states, 3517 states have (on average 1.2888825703724764) internal successors, (4533), 3578 states have internal predecessors, (4533), 502 states have call successors, (502), 410 states have call predecessors, (502), 518 states have return successors, (736), 557 states have call predecessors, (736), 499 states have call successors, (736) [2024-11-27 20:30:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4539 states to 4539 states and 5771 transitions. [2024-11-27 20:30:17,285 INFO L78 Accepts]: Start accepts. Automaton has 4539 states and 5771 transitions. Word has length 69 [2024-11-27 20:30:17,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:17,285 INFO L471 AbstractCegarLoop]: Abstraction has 4539 states and 5771 transitions. [2024-11-27 20:30:17,285 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) [2024-11-27 20:30:17,286 INFO L276 IsEmpty]: Start isEmpty. Operand 4539 states and 5771 transitions. [2024-11-27 20:30:17,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-27 20:30:17,289 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:17,289 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] [2024-11-27 20:30:17,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:30:17,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e8d9b4-4fd2-4e61-9dec-9352f6baa52d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:17,494 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:17,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:17,495 INFO L85 PathProgramCache]: Analyzing trace with hash -864164088, now seen corresponding path program 2 times [2024-11-27 20:30:17,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:17,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489846663] [2024-11-27 20:30:17,496 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:30:17,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:17,524 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:30:17,526 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:30:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:17,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:17,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489846663] [2024-11-27 20:30:17,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489846663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:17,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:17,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:30:17,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70442193] [2024-11-27 20:30:17,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:17,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:17,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:17,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:17,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:17,590 INFO L87 Difference]: Start difference. First operand 4539 states and 5771 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) [2024-11-27 20:30:17,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:17,998 INFO L93 Difference]: Finished difference Result 6913 states and 8807 transitions. [2024-11-27 20:30:17,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:17,999 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 [2024-11-27 20:30:17,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:18,022 INFO L225 Difference]: With dead ends: 6913 [2024-11-27 20:30:18,022 INFO L226 Difference]: Without dead ends: 2988 [2024-11-27 20:30:18,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:18,035 INFO L435 NwaCegarLoop]: 492 mSDtfsCounter, 374 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 605 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 [2024-11-27 20:30:18,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 605 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:18,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2988 states. [2024-11-27 20:30:18,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2988 to 2968. [2024-11-27 20:30:18,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2968 states, 2302 states have (on average 1.2728062554300608) internal successors, (2930), 2341 states have internal predecessors, (2930), 334 states have call successors, (334), 266 states have call predecessors, (334), 330 states have return successors, (462), 367 states have call predecessors, (462), 331 states have call successors, (462) [2024-11-27 20:30:18,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 3726 transitions. [2024-11-27 20:30:18,425 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 3726 transitions. Word has length 71 [2024-11-27 20:30:18,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:18,426 INFO L471 AbstractCegarLoop]: Abstraction has 2968 states and 3726 transitions. [2024-11-27 20:30:18,426 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) [2024-11-27 20:30:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 3726 transitions. [2024-11-27 20:30:18,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-27 20:30:18,430 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:18,430 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] [2024-11-27 20:30:18,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:30:18,431 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:18,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:18,432 INFO L85 PathProgramCache]: Analyzing trace with hash 694595079, now seen corresponding path program 1 times [2024-11-27 20:30:18,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:18,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088728289] [2024-11-27 20:30:18,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:18,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 20:30:18,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:18,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088728289] [2024-11-27 20:30:18,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088728289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:18,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:18,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:30:18,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392120177] [2024-11-27 20:30:18,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:18,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:30:18,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:18,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:30:18,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:18,583 INFO L87 Difference]: Start difference. First operand 2968 states and 3726 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) [2024-11-27 20:30:20,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:20,763 INFO L93 Difference]: Finished difference Result 8796 states and 10928 transitions. [2024-11-27 20:30:20,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:30:20,764 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 [2024-11-27 20:30:20,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:20,802 INFO L225 Difference]: With dead ends: 8796 [2024-11-27 20:30:20,802 INFO L226 Difference]: Without dead ends: 4727 [2024-11-27 20:30:20,816 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 [2024-11-27 20:30:20,818 INFO L435 NwaCegarLoop]: 295 mSDtfsCounter, 576 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:20,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1226 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:30:20,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2024-11-27 20:30:21,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 4475. [2024-11-27 20:30:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4475 states, 3455 states have (on average 1.2439942112879885) internal successors, (4298), 3527 states have internal predecessors, (4298), 496 states have call successors, (496), 407 states have call predecessors, (496), 522 states have return successors, (743), 547 states have call predecessors, (743), 493 states have call successors, (743) [2024-11-27 20:30:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 5537 transitions. [2024-11-27 20:30:21,487 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 5537 transitions. Word has length 80 [2024-11-27 20:30:21,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:21,487 INFO L471 AbstractCegarLoop]: Abstraction has 4475 states and 5537 transitions. [2024-11-27 20:30:21,488 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) [2024-11-27 20:30:21,488 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 5537 transitions. [2024-11-27 20:30:21,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-27 20:30:21,493 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:21,493 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] [2024-11-27 20:30:21,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:30:21,493 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:21,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1384163769, now seen corresponding path program 1 times [2024-11-27 20:30:21,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:21,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174222578] [2024-11-27 20:30:21,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:21,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:21,680 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:30:21,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:21,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174222578] [2024-11-27 20:30:21,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174222578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:21,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:21,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:30:21,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615825480] [2024-11-27 20:30:21,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:21,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:30:21,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:21,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:30:21,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:30:21,683 INFO L87 Difference]: Start difference. First operand 4475 states and 5537 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) [2024-11-27 20:30:23,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:23,672 INFO L93 Difference]: Finished difference Result 8111 states and 9993 transitions. [2024-11-27 20:30:23,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:30:23,673 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 [2024-11-27 20:30:23,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:23,715 INFO L225 Difference]: With dead ends: 8111 [2024-11-27 20:30:23,716 INFO L226 Difference]: Without dead ends: 4048 [2024-11-27 20:30:23,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:30:23,730 INFO L435 NwaCegarLoop]: 307 mSDtfsCounter, 1182 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:23,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 1294 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:30:23,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2024-11-27 20:30:24,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 3772. [2024-11-27 20:30:24,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3772 states, 2920 states have (on average 1.2380136986301369) internal successors, (3615), 2977 states have internal predecessors, (3615), 418 states have call successors, (418), 338 states have call predecessors, (418), 432 states have return successors, (570), 463 states have call predecessors, (570), 415 states have call successors, (570) [2024-11-27 20:30:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3772 states to 3772 states and 4603 transitions. [2024-11-27 20:30:24,383 INFO L78 Accepts]: Start accepts. Automaton has 3772 states and 4603 transitions. Word has length 86 [2024-11-27 20:30:24,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:24,384 INFO L471 AbstractCegarLoop]: Abstraction has 3772 states and 4603 transitions. [2024-11-27 20:30:24,384 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) [2024-11-27 20:30:24,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3772 states and 4603 transitions. [2024-11-27 20:30:24,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 20:30:24,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:24,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:24,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:30:24,390 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:24,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:24,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1728598214, now seen corresponding path program 1 times [2024-11-27 20:30:24,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:24,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413552152] [2024-11-27 20:30:24,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:24,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:24,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:24,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413552152] [2024-11-27 20:30:24,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413552152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:24,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:24,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:30:24,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106408709] [2024-11-27 20:30:24,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:24,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:24,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:24,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:24,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:24,456 INFO L87 Difference]: Start difference. First operand 3772 states and 4603 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:25,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:25,031 INFO L93 Difference]: Finished difference Result 3945 states and 4866 transitions. [2024-11-27 20:30:25,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:25,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-11-27 20:30:25,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:25,065 INFO L225 Difference]: With dead ends: 3945 [2024-11-27 20:30:25,065 INFO L226 Difference]: Without dead ends: 3772 [2024-11-27 20:30:25,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:25,070 INFO L435 NwaCegarLoop]: 400 mSDtfsCounter, 268 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 525 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 [2024-11-27 20:30:25,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 525 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:25,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3772 states. [2024-11-27 20:30:25,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3772 to 3772. [2024-11-27 20:30:25,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3772 states, 2920 states have (on average 1.2376712328767123) internal successors, (3614), 2977 states have internal predecessors, (3614), 418 states have call successors, (418), 338 states have call predecessors, (418), 432 states have return successors, (570), 463 states have call predecessors, (570), 415 states have call successors, (570) [2024-11-27 20:30:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3772 states to 3772 states and 4602 transitions. [2024-11-27 20:30:25,601 INFO L78 Accepts]: Start accepts. Automaton has 3772 states and 4602 transitions. Word has length 89 [2024-11-27 20:30:25,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:25,602 INFO L471 AbstractCegarLoop]: Abstraction has 3772 states and 4602 transitions. [2024-11-27 20:30:25,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:25,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3772 states and 4602 transitions. [2024-11-27 20:30:25,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 20:30:25,608 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:25,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:25,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:30:25,608 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:25,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:25,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1727335420, now seen corresponding path program 1 times [2024-11-27 20:30:25,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:25,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221441937] [2024-11-27 20:30:25,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:25,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:25,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:25,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:25,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221441937] [2024-11-27 20:30:25,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221441937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:25,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:25,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:30:25,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70672530] [2024-11-27 20:30:25,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:25,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:30:25,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:25,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:30:25,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:30:25,757 INFO L87 Difference]: Start difference. First operand 3772 states and 4602 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:26,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:26,912 INFO L93 Difference]: Finished difference Result 4128 states and 5152 transitions. [2024-11-27 20:30:26,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:30:26,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-11-27 20:30:26,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:26,937 INFO L225 Difference]: With dead ends: 4128 [2024-11-27 20:30:26,937 INFO L226 Difference]: Without dead ends: 3958 [2024-11-27 20:30:26,940 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 [2024-11-27 20:30:26,941 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 644 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:26,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 901 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:30:26,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2024-11-27 20:30:27,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3943. [2024-11-27 20:30:27,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3943 states, 3071 states have (on average 1.253663301856073) internal successors, (3850), 3129 states have internal predecessors, (3850), 431 states have call successors, (431), 344 states have call predecessors, (431), 439 states have return successors, (584), 476 states have call predecessors, (584), 428 states have call successors, (584) [2024-11-27 20:30:27,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 4865 transitions. [2024-11-27 20:30:27,461 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 4865 transitions. Word has length 89 [2024-11-27 20:30:27,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:27,462 INFO L471 AbstractCegarLoop]: Abstraction has 3943 states and 4865 transitions. [2024-11-27 20:30:27,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:27,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 4865 transitions. [2024-11-27 20:30:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 20:30:27,466 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:27,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:27,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:30:27,467 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:27,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2105085176, now seen corresponding path program 1 times [2024-11-27 20:30:27,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:27,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151750202] [2024-11-27 20:30:27,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:27,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:27,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:27,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151750202] [2024-11-27 20:30:27,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151750202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:27,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:27,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:30:27,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276767573] [2024-11-27 20:30:27,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:27,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:30:27,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:27,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:30:27,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:27,641 INFO L87 Difference]: Start difference. First operand 3943 states and 4865 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:29,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:29,191 INFO L93 Difference]: Finished difference Result 4499 states and 5727 transitions. [2024-11-27 20:30:29,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:30:29,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-11-27 20:30:29,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:29,217 INFO L225 Difference]: With dead ends: 4499 [2024-11-27 20:30:29,217 INFO L226 Difference]: Without dead ends: 4158 [2024-11-27 20:30:29,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:30:29,222 INFO L435 NwaCegarLoop]: 416 mSDtfsCounter, 637 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:29,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 1612 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:30:29,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2024-11-27 20:30:29,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 4103. [2024-11-27 20:30:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4103 states, 3211 states have (on average 1.2656493304266583) internal successors, (4064), 3270 states have internal predecessors, (4064), 444 states have call successors, (444), 350 states have call predecessors, (444), 446 states have return successors, (600), 490 states have call predecessors, (600), 441 states have call successors, (600) [2024-11-27 20:30:29,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 5108 transitions. [2024-11-27 20:30:29,873 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 5108 transitions. Word has length 89 [2024-11-27 20:30:29,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:29,873 INFO L471 AbstractCegarLoop]: Abstraction has 4103 states and 5108 transitions. [2024-11-27 20:30:29,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:29,874 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 5108 transitions. [2024-11-27 20:30:29,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 20:30:29,878 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:29,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:29,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:30:29,880 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:29,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:29,881 INFO L85 PathProgramCache]: Analyzing trace with hash 194042618, now seen corresponding path program 1 times [2024-11-27 20:30:29,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:29,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032082984] [2024-11-27 20:30:29,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:29,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:30,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:30,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:30,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032082984] [2024-11-27 20:30:30,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032082984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:30,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:30,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:30:30,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601558287] [2024-11-27 20:30:30,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:30,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:30:30,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:30,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:30:30,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:30,120 INFO L87 Difference]: Start difference. First operand 4103 states and 5108 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:31,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:31,842 INFO L93 Difference]: Finished difference Result 5001 states and 6499 transitions. [2024-11-27 20:30:31,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:30:31,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-11-27 20:30:31,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:31,876 INFO L225 Difference]: With dead ends: 5001 [2024-11-27 20:30:31,877 INFO L226 Difference]: Without dead ends: 4500 [2024-11-27 20:30:31,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:30:31,882 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 649 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:31,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 1175 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:30:31,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2024-11-27 20:30:32,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 4440. [2024-11-27 20:30:32,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4440 states, 3506 states have (on average 1.288933257273246) internal successors, (4519), 3569 states have internal predecessors, (4519), 470 states have call successors, (470), 362 states have call predecessors, (470), 462 states have return successors, (638), 518 states have call predecessors, (638), 467 states have call successors, (638) [2024-11-27 20:30:32,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 5627 transitions. [2024-11-27 20:30:32,539 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 5627 transitions. Word has length 89 [2024-11-27 20:30:32,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:32,540 INFO L471 AbstractCegarLoop]: Abstraction has 4440 states and 5627 transitions. [2024-11-27 20:30:32,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:32,540 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 5627 transitions. [2024-11-27 20:30:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 20:30:32,545 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:32,545 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:32,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 20:30:32,546 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:32,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:32,546 INFO L85 PathProgramCache]: Analyzing trace with hash 270943416, now seen corresponding path program 1 times [2024-11-27 20:30:32,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:32,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550523199] [2024-11-27 20:30:32,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:32,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:32,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:32,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550523199] [2024-11-27 20:30:32,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550523199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:32,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:32,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:30:32,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779999323] [2024-11-27 20:30:32,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:32,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:30:32,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:32,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:30:32,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:32,705 INFO L87 Difference]: Start difference. First operand 4440 states and 5627 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:34,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:34,346 INFO L93 Difference]: Finished difference Result 6068 states and 8172 transitions. [2024-11-27 20:30:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:30:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-11-27 20:30:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:34,379 INFO L225 Difference]: With dead ends: 6068 [2024-11-27 20:30:34,380 INFO L226 Difference]: Without dead ends: 5230 [2024-11-27 20:30:34,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:30:34,386 INFO L435 NwaCegarLoop]: 409 mSDtfsCounter, 627 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:34,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1584 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:30:34,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5230 states. [2024-11-27 20:30:35,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5230 to 5159. [2024-11-27 20:30:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5159 states, 4135 states have (on average 1.3298669891172914) internal successors, (5499), 4212 states have internal predecessors, (5499), 522 states have call successors, (522), 386 states have call predecessors, (522), 500 states have return successors, (738), 574 states have call predecessors, (738), 519 states have call successors, (738) [2024-11-27 20:30:35,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 6759 transitions. [2024-11-27 20:30:35,199 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 6759 transitions. Word has length 89 [2024-11-27 20:30:35,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:35,201 INFO L471 AbstractCegarLoop]: Abstraction has 5159 states and 6759 transitions. [2024-11-27 20:30:35,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:35,202 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 6759 transitions. [2024-11-27 20:30:35,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 20:30:35,209 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:35,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:35,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 20:30:35,209 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:35,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:35,210 INFO L85 PathProgramCache]: Analyzing trace with hash -696407238, now seen corresponding path program 1 times [2024-11-27 20:30:35,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:35,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655233941] [2024-11-27 20:30:35,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:35,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:35,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:35,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655233941] [2024-11-27 20:30:35,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655233941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:35,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:35,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:30:35,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129541797] [2024-11-27 20:30:35,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:35,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:30:35,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:35,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:30:35,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:35,374 INFO L87 Difference]: Start difference. First operand 5159 states and 6759 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:37,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:37,366 INFO L93 Difference]: Finished difference Result 8363 states and 11882 transitions. [2024-11-27 20:30:37,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:30:37,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-11-27 20:30:37,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:37,409 INFO L225 Difference]: With dead ends: 8363 [2024-11-27 20:30:37,409 INFO L226 Difference]: Without dead ends: 6806 [2024-11-27 20:30:37,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:30:37,419 INFO L435 NwaCegarLoop]: 406 mSDtfsCounter, 622 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:37,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 1572 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:30:37,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6806 states. [2024-11-27 20:30:38,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6806 to 6714. [2024-11-27 20:30:38,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6714 states, 5492 states have (on average 1.390203932993445) internal successors, (7635), 5615 states have internal predecessors, (7635), 626 states have call successors, (626), 434 states have call predecessors, (626), 594 states have return successors, (1034), 686 states have call predecessors, (1034), 623 states have call successors, (1034) [2024-11-27 20:30:38,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6714 states to 6714 states and 9295 transitions. [2024-11-27 20:30:38,305 INFO L78 Accepts]: Start accepts. Automaton has 6714 states and 9295 transitions. Word has length 89 [2024-11-27 20:30:38,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:38,306 INFO L471 AbstractCegarLoop]: Abstraction has 6714 states and 9295 transitions. [2024-11-27 20:30:38,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:38,306 INFO L276 IsEmpty]: Start isEmpty. Operand 6714 states and 9295 transitions. [2024-11-27 20:30:38,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 20:30:38,313 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:38,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:38,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 20:30:38,313 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:38,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:38,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1212050552, now seen corresponding path program 1 times [2024-11-27 20:30:38,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:38,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121727378] [2024-11-27 20:30:38,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:38,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:38,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:38,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121727378] [2024-11-27 20:30:38,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121727378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:38,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:38,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:30:38,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936370004] [2024-11-27 20:30:38,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:38,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:30:38,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:38,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:30:38,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:38,455 INFO L87 Difference]: Start difference. First operand 6714 states and 9295 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:40,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:40,440 INFO L93 Difference]: Finished difference Result 13662 states and 20781 transitions. [2024-11-27 20:30:40,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:30:40,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-11-27 20:30:40,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:40,496 INFO L225 Difference]: With dead ends: 13662 [2024-11-27 20:30:40,496 INFO L226 Difference]: Without dead ends: 10550 [2024-11-27 20:30:40,509 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 [2024-11-27 20:30:40,509 INFO L435 NwaCegarLoop]: 396 mSDtfsCounter, 717 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:40,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1529 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:30:40,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10550 states. [2024-11-27 20:30:41,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10550 to 9848. [2024-11-27 20:30:41,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9848 states, 8192 states have (on average 1.4483642578125) internal successors, (11865), 8461 states have internal predecessors, (11865), 818 states have call successors, (818), 530 states have call predecessors, (818), 836 states have return successors, (1994), 894 states have call predecessors, (1994), 815 states have call successors, (1994) [2024-11-27 20:30:41,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9848 states to 9848 states and 14677 transitions. [2024-11-27 20:30:41,728 INFO L78 Accepts]: Start accepts. Automaton has 9848 states and 14677 transitions. Word has length 89 [2024-11-27 20:30:41,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:41,729 INFO L471 AbstractCegarLoop]: Abstraction has 9848 states and 14677 transitions. [2024-11-27 20:30:41,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:41,729 INFO L276 IsEmpty]: Start isEmpty. Operand 9848 states and 14677 transitions. [2024-11-27 20:30:41,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 20:30:41,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:41,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:41,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 20:30:41,740 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:41,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:41,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2128976586, now seen corresponding path program 1 times [2024-11-27 20:30:41,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:41,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996007579] [2024-11-27 20:30:41,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:41,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:41,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:41,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:41,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996007579] [2024-11-27 20:30:41,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996007579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:41,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:41,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:30:41,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640376718] [2024-11-27 20:30:41,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:41,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:30:41,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:41,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:30:41,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:41,882 INFO L87 Difference]: Start difference. First operand 9848 states and 14677 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:44,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:44,963 INFO L93 Difference]: Finished difference Result 23884 states and 39489 transitions. [2024-11-27 20:30:44,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:30:44,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-11-27 20:30:44,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:45,073 INFO L225 Difference]: With dead ends: 23884 [2024-11-27 20:30:45,073 INFO L226 Difference]: Without dead ends: 17638 [2024-11-27 20:30:45,103 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 [2024-11-27 20:30:45,104 INFO L435 NwaCegarLoop]: 394 mSDtfsCounter, 632 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:45,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 1521 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:30:45,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17638 states. [2024-11-27 20:30:46,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17638 to 16779. [2024-11-27 20:30:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16779 states, 14109 states have (on average 1.502374370968885) internal successors, (21197), 14832 states have internal predecessors, (21197), 1186 states have call successors, (1186), 722 states have call predecessors, (1186), 1482 states have return successors, (5434), 1294 states have call predecessors, (5434), 1183 states have call successors, (5434) [2024-11-27 20:30:47,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16779 states to 16779 states and 27817 transitions. [2024-11-27 20:30:47,087 INFO L78 Accepts]: Start accepts. Automaton has 16779 states and 27817 transitions. Word has length 89 [2024-11-27 20:30:47,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:47,087 INFO L471 AbstractCegarLoop]: Abstraction has 16779 states and 27817 transitions. [2024-11-27 20:30:47,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:47,088 INFO L276 IsEmpty]: Start isEmpty. Operand 16779 states and 27817 transitions. [2024-11-27 20:30:47,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 20:30:47,100 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:47,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:47,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 20:30:47,100 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:47,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:47,101 INFO L85 PathProgramCache]: Analyzing trace with hash 949836984, now seen corresponding path program 1 times [2024-11-27 20:30:47,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:47,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404216259] [2024-11-27 20:30:47,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:47,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:47,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:47,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404216259] [2024-11-27 20:30:47,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404216259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:47,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:47,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:30:47,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099357996] [2024-11-27 20:30:47,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:47,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:30:47,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:47,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:30:47,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:47,232 INFO L87 Difference]: Start difference. First operand 16779 states and 27817 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:51,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:51,759 INFO L93 Difference]: Finished difference Result 46113 states and 86355 transitions. [2024-11-27 20:30:51,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:30:51,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-11-27 20:30:51,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:52,001 INFO L225 Difference]: With dead ends: 46113 [2024-11-27 20:30:52,002 INFO L226 Difference]: Without dead ends: 32936 [2024-11-27 20:30:52,064 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 [2024-11-27 20:30:52,066 INFO L435 NwaCegarLoop]: 391 mSDtfsCounter, 648 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:52,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 1509 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:30:52,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32936 states. [2024-11-27 20:30:56,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32936 to 31760. [2024-11-27 20:30:56,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31760 states, 26608 states have (on average 1.5310057125676488) internal successors, (40737), 28725 states have internal predecessors, (40737), 1890 states have call successors, (1890), 1106 states have call predecessors, (1890), 3260 states have return successors, (18426), 2062 states have call predecessors, (18426), 1887 states have call successors, (18426) [2024-11-27 20:30:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31760 states to 31760 states and 61053 transitions. [2024-11-27 20:30:56,368 INFO L78 Accepts]: Start accepts. Automaton has 31760 states and 61053 transitions. Word has length 89 [2024-11-27 20:30:56,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:56,368 INFO L471 AbstractCegarLoop]: Abstraction has 31760 states and 61053 transitions. [2024-11-27 20:30:56,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:30:56,369 INFO L276 IsEmpty]: Start isEmpty. Operand 31760 states and 61053 transitions. [2024-11-27 20:30:56,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 20:30:56,390 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:56,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:56,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 20:30:56,390 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:56,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:56,391 INFO L85 PathProgramCache]: Analyzing trace with hash 217869558, now seen corresponding path program 1 times [2024-11-27 20:30:56,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:56,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742754606] [2024-11-27 20:30:56,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:56,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:30:56,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:56,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742754606] [2024-11-27 20:30:56,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742754606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:56,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:56,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:30:56,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095077502] [2024-11-27 20:30:56,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:56,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:30:56,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:56,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:30:56,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:56,525 INFO L87 Difference]: Start difference. First operand 31760 states and 61053 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:31:04,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:31:04,299 INFO L93 Difference]: Finished difference Result 93176 states and 210505 transitions. [2024-11-27 20:31:04,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:31:04,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 89 [2024-11-27 20:31:04,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:31:04,794 INFO L225 Difference]: With dead ends: 93176 [2024-11-27 20:31:04,794 INFO L226 Difference]: Without dead ends: 65018 [2024-11-27 20:31:04,927 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 [2024-11-27 20:31:04,927 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 613 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:31:04,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 1497 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:31:04,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65018 states.