./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/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_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/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_1e1b1d11-9572-4222-b11a-a6c739589114/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 6d6da8f3ee43e0b2f144002fad1e1be3bc4062b8e0f7b0d6768d1ce0f0c5101f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:48:28,498 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:48:28,565 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:48:28,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:48:28,573 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:48:28,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:48:28,624 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:48:28,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:48:28,624 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:48:28,625 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:48:28,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:48:28,625 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:48:28,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:48:28,626 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:48:28,626 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:48:28,626 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:48:28,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:48:28,626 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:48:28,627 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:48:28,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:48:28,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:48:28,627 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:48:28,627 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:48:28,627 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:48:28,628 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:48:28,628 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:48:28,628 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:48:28,628 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:48:28,628 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:48:28,628 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:48:28,629 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:48:28,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:48:28,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:48:28,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:48:28,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:48:28,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:48:28,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:48:28,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:48:28,630 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:48:28,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:48:28,630 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:48:28,631 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:48:28,631 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:48:28,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:48:28,631 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:48:28,631 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:48:28,631 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:48:28,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:48:28,632 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_1e1b1d11-9572-4222-b11a-a6c739589114/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 -> 6d6da8f3ee43e0b2f144002fad1e1be3bc4062b8e0f7b0d6768d1ce0f0c5101f [2024-11-28 02:48:28,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:48:28,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:48:28,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:48:28,989 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:48:28,989 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:48:28,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2024-11-28 02:48:32,154 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/data/abf390023/9b0d8c31af5d4ef2a661ff6435c7af03/FLAG3c7f319ea [2024-11-28 02:48:32,468 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:48:32,469 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2024-11-28 02:48:32,500 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/data/abf390023/9b0d8c31af5d4ef2a661ff6435c7af03/FLAG3c7f319ea [2024-11-28 02:48:32,718 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/data/abf390023/9b0d8c31af5d4ef2a661ff6435c7af03 [2024-11-28 02:48:32,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:48:32,721 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:48:32,723 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:48:32,723 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:48:32,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:48:32,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:48:32" (1/1) ... [2024-11-28 02:48:32,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df631fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:32, skipping insertion in model container [2024-11-28 02:48:32,730 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:48:32" (1/1) ... [2024-11-28 02:48:32,777 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:48:32,971 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_1e1b1d11-9572-4222-b11a-a6c739589114/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c[914,927] [2024-11-28 02:48:33,042 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_1e1b1d11-9572-4222-b11a-a6c739589114/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c[7115,7128] [2024-11-28 02:48:33,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:48:33,252 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:48:33,261 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_1e1b1d11-9572-4222-b11a-a6c739589114/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c[914,927] [2024-11-28 02:48:33,289 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_1e1b1d11-9572-4222-b11a-a6c739589114/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-1.c[7115,7128] [2024-11-28 02:48:33,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:48:33,415 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:48:33,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:33 WrapperNode [2024-11-28 02:48:33,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:48:33,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:48:33,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:48:33,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:48:33,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:33" (1/1) ... [2024-11-28 02:48:33,437 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:33" (1/1) ... [2024-11-28 02:48:33,493 INFO L138 Inliner]: procedures = 73, calls = 88, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 937 [2024-11-28 02:48:33,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:48:33,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:48:33,494 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:48:33,494 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:48:33,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:33" (1/1) ... [2024-11-28 02:48:33,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:33" (1/1) ... [2024-11-28 02:48:33,515 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:33" (1/1) ... [2024-11-28 02:48:33,535 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:48:33,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:33" (1/1) ... [2024-11-28 02:48:33,536 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:33" (1/1) ... [2024-11-28 02:48:33,552 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:33" (1/1) ... [2024-11-28 02:48:33,554 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:33" (1/1) ... [2024-11-28 02:48:33,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:33" (1/1) ... [2024-11-28 02:48:33,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:33" (1/1) ... [2024-11-28 02:48:33,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:33" (1/1) ... [2024-11-28 02:48:33,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:48:33,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:48:33,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:48:33,610 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:48:33,611 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:33" (1/1) ... [2024-11-28 02:48:33,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:48:33,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:33,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:48:33,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:48:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:48:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-28 02:48:33,692 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-28 02:48:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-28 02:48:33,692 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-28 02:48:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-28 02:48:33,693 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-28 02:48:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-28 02:48:33,693 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-28 02:48:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-28 02:48:33,693 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-28 02:48:33,694 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-28 02:48:33,694 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-28 02:48:33,694 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-28 02:48:33,694 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-28 02:48:33,694 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-28 02:48:33,695 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-28 02:48:33,695 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-28 02:48:33,696 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-28 02:48:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-28 02:48:33,696 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-28 02:48:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-28 02:48:33,696 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-28 02:48:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:48:33,696 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-28 02:48:33,696 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-28 02:48:33,697 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-28 02:48:33,697 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-28 02:48:33,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:48:33,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:48:33,697 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-28 02:48:33,697 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-28 02:48:33,697 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-28 02:48:33,697 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-28 02:48:33,914 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:48:33,917 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:48:35,230 INFO L? ?]: Removed 119 outVars from TransFormulas that were not future-live. [2024-11-28 02:48:35,230 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:48:35,263 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:48:35,263 INFO L312 CfgBuilder]: Removed 34 assume(true) statements. [2024-11-28 02:48:35,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:48:35 BoogieIcfgContainer [2024-11-28 02:48:35,267 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:48:35,270 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:48:35,270 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:48:35,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:48:35,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:48:32" (1/3) ... [2024-11-28 02:48:35,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755a6570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:48:35, skipping insertion in model container [2024-11-28 02:48:35,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:48:33" (2/3) ... [2024-11-28 02:48:35,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755a6570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:48:35, skipping insertion in model container [2024-11-28 02:48:35,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:48:35" (3/3) ... [2024-11-28 02:48:35,285 INFO L128 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.10.cil-1.c [2024-11-28 02:48:35,302 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:48:35,308 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pc_sfifo_2.cil-1+token_ring.10.cil-1.c that has 16 procedures, 435 locations, 1 initial locations, 17 loop locations, and 2 error locations. [2024-11-28 02:48:35,433 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:48:35,450 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;@7ffbcc21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:48:35,451 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 02:48:35,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 435 states, 379 states have (on average 1.6385224274406331) internal successors, (621), 385 states have internal predecessors, (621), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-28 02:48:35,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:48:35,476 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:35,477 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:35,478 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:35,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:35,485 INFO L85 PathProgramCache]: Analyzing trace with hash 605624469, now seen corresponding path program 1 times [2024-11-28 02:48:35,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:35,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548649971] [2024-11-28 02:48:35,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:35,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:36,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:36,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548649971] [2024-11-28 02:48:36,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548649971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:36,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:36,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:48:36,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833736185] [2024-11-28 02:48:36,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:36,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:48:36,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:36,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:48:36,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:48:36,222 INFO L87 Difference]: Start difference. First operand has 435 states, 379 states have (on average 1.6385224274406331) internal successors, (621), 385 states have internal predecessors, (621), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:48:37,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:37,618 INFO L93 Difference]: Finished difference Result 942 states and 1514 transitions. [2024-11-28 02:48:37,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:48:37,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-28 02:48:37,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:37,639 INFO L225 Difference]: With dead ends: 942 [2024-11-28 02:48:37,639 INFO L226 Difference]: Without dead ends: 523 [2024-11-28 02:48:37,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:48:37,649 INFO L435 NwaCegarLoop]: 394 mSDtfsCounter, 437 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:37,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 1394 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 02:48:37,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2024-11-28 02:48:37,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 516. [2024-11-28 02:48:37,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 441 states have (on average 1.5328798185941044) internal successors, (676), 448 states have internal predecessors, (676), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2024-11-28 02:48:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 779 transitions. [2024-11-28 02:48:37,784 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 779 transitions. Word has length 62 [2024-11-28 02:48:37,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:37,784 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 779 transitions. [2024-11-28 02:48:37,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:48:37,786 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 779 transitions. [2024-11-28 02:48:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:48:37,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:37,792 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:37,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:48:37,792 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:37,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:37,794 INFO L85 PathProgramCache]: Analyzing trace with hash 808960469, now seen corresponding path program 1 times [2024-11-28 02:48:37,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:37,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667395757] [2024-11-28 02:48:37,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:37,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:38,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:38,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:38,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667395757] [2024-11-28 02:48:38,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667395757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:38,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:38,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:48:38,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332526633] [2024-11-28 02:48:38,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:38,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:48:38,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:38,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:48:38,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:48:38,228 INFO L87 Difference]: Start difference. First operand 516 states and 779 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:48:39,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:39,747 INFO L93 Difference]: Finished difference Result 821 states and 1198 transitions. [2024-11-28 02:48:39,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:48:39,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-28 02:48:39,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:39,753 INFO L225 Difference]: With dead ends: 821 [2024-11-28 02:48:39,754 INFO L226 Difference]: Without dead ends: 652 [2024-11-28 02:48:39,755 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 [2024-11-28 02:48:39,755 INFO L435 NwaCegarLoop]: 372 mSDtfsCounter, 943 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:39,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 1411 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:48:39,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2024-11-28 02:48:39,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 608. [2024-11-28 02:48:39,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 513 states have (on average 1.5126705653021442) internal successors, (776), 522 states have internal predecessors, (776), 62 states have call successors, (62), 29 states have call predecessors, (62), 31 states have return successors, (71), 60 states have call predecessors, (71), 58 states have call successors, (71) [2024-11-28 02:48:39,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 909 transitions. [2024-11-28 02:48:39,810 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 909 transitions. Word has length 62 [2024-11-28 02:48:39,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:39,811 INFO L471 AbstractCegarLoop]: Abstraction has 608 states and 909 transitions. [2024-11-28 02:48:39,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:48:39,811 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 909 transitions. [2024-11-28 02:48:39,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:48:39,814 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:39,814 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:39,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:48:39,815 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:39,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:39,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1546844781, now seen corresponding path program 1 times [2024-11-28 02:48:39,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:39,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079152006] [2024-11-28 02:48:39,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:39,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:39,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:39,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079152006] [2024-11-28 02:48:39,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079152006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:39,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:39,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:48:39,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682084658] [2024-11-28 02:48:39,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:39,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:48:39,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:39,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:48:39,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:48:39,954 INFO L87 Difference]: Start difference. First operand 608 states and 909 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:48:40,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:40,047 INFO L93 Difference]: Finished difference Result 868 states and 1270 transitions. [2024-11-28 02:48:40,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:48:40,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2024-11-28 02:48:40,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:40,053 INFO L225 Difference]: With dead ends: 868 [2024-11-28 02:48:40,053 INFO L226 Difference]: Without dead ends: 613 [2024-11-28 02:48:40,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:48:40,055 INFO L435 NwaCegarLoop]: 648 mSDtfsCounter, 0 mSDsluCounter, 2587 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3235 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:40,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3235 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:48:40,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-28 02:48:40,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2024-11-28 02:48:40,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 517 states have (on average 1.504835589941973) internal successors, (778), 526 states have internal predecessors, (778), 62 states have call successors, (62), 29 states have call predecessors, (62), 32 states have return successors, (72), 61 states have call predecessors, (72), 58 states have call successors, (72) [2024-11-28 02:48:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 912 transitions. [2024-11-28 02:48:40,127 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 912 transitions. Word has length 62 [2024-11-28 02:48:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:40,127 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 912 transitions. [2024-11-28 02:48:40,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:48:40,128 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 912 transitions. [2024-11-28 02:48:40,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:48:40,134 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:40,134 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:40,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:48:40,138 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:40,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:40,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1904117013, now seen corresponding path program 1 times [2024-11-28 02:48:40,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:40,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441373677] [2024-11-28 02:48:40,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:40,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:40,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:40,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441373677] [2024-11-28 02:48:40,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441373677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:40,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:40,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:48:40,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63255723] [2024-11-28 02:48:40,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:40,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:48:40,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:40,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:48:40,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:48:40,319 INFO L87 Difference]: Start difference. First operand 613 states and 912 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:48:40,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:40,417 INFO L93 Difference]: Finished difference Result 888 states and 1288 transitions. [2024-11-28 02:48:40,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:48:40,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2024-11-28 02:48:40,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:40,424 INFO L225 Difference]: With dead ends: 888 [2024-11-28 02:48:40,424 INFO L226 Difference]: Without dead ends: 628 [2024-11-28 02:48:40,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:48:40,427 INFO L435 NwaCegarLoop]: 648 mSDtfsCounter, 0 mSDsluCounter, 2587 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3235 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:40,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3235 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:48:40,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2024-11-28 02:48:40,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2024-11-28 02:48:40,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 529 states have (on average 1.4933837429111532) internal successors, (790), 538 states have internal predecessors, (790), 62 states have call successors, (62), 29 states have call predecessors, (62), 35 states have return successors, (75), 64 states have call predecessors, (75), 58 states have call successors, (75) [2024-11-28 02:48:40,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 927 transitions. [2024-11-28 02:48:40,494 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 927 transitions. Word has length 62 [2024-11-28 02:48:40,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:40,495 INFO L471 AbstractCegarLoop]: Abstraction has 628 states and 927 transitions. [2024-11-28 02:48:40,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:48:40,495 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 927 transitions. [2024-11-28 02:48:40,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:48:40,498 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:40,498 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:40,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:48:40,498 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:40,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:40,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1966156627, now seen corresponding path program 1 times [2024-11-28 02:48:40,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:40,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425675336] [2024-11-28 02:48:40,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:40,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:40,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:40,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:40,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425675336] [2024-11-28 02:48:40,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425675336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:40,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:40,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:48:40,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178569501] [2024-11-28 02:48:40,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:40,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:40,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:40,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:40,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:48:40,641 INFO L87 Difference]: Start difference. First operand 628 states and 927 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:48:41,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:41,440 INFO L93 Difference]: Finished difference Result 1173 states and 1660 transitions. [2024-11-28 02:48:41,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:48:41,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2024-11-28 02:48:41,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:41,450 INFO L225 Difference]: With dead ends: 1173 [2024-11-28 02:48:41,450 INFO L226 Difference]: Without dead ends: 901 [2024-11-28 02:48:41,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:48:41,455 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 911 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:41,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 691 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:48:41,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2024-11-28 02:48:41,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 897. [2024-11-28 02:48:41,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 734 states have (on average 1.44141689373297) internal successors, (1058), 750 states have internal predecessors, (1058), 96 states have call successors, (96), 50 states have call predecessors, (96), 65 states have return successors, (133), 103 states have call predecessors, (133), 92 states have call successors, (133) [2024-11-28 02:48:41,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1287 transitions. [2024-11-28 02:48:41,561 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1287 transitions. Word has length 62 [2024-11-28 02:48:41,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:41,562 INFO L471 AbstractCegarLoop]: Abstraction has 897 states and 1287 transitions. [2024-11-28 02:48:41,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 02:48:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1287 transitions. [2024-11-28 02:48:41,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 02:48:41,568 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:41,568 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:41,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:48:41,569 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:41,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:41,569 INFO L85 PathProgramCache]: Analyzing trace with hash -271396935, now seen corresponding path program 1 times [2024-11-28 02:48:41,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:41,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966629265] [2024-11-28 02:48:41,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:41,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:41,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:41,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966629265] [2024-11-28 02:48:41,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966629265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:41,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:41,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:48:41,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695341726] [2024-11-28 02:48:41,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:41,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:48:41,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:41,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:48:41,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:48:41,664 INFO L87 Difference]: Start difference. First operand 897 states and 1287 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:48:41,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:41,858 INFO L93 Difference]: Finished difference Result 1918 states and 2658 transitions. [2024-11-28 02:48:41,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:48:41,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2024-11-28 02:48:41,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:41,868 INFO L225 Difference]: With dead ends: 1918 [2024-11-28 02:48:41,868 INFO L226 Difference]: Without dead ends: 1356 [2024-11-28 02:48:41,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:48:41,871 INFO L435 NwaCegarLoop]: 647 mSDtfsCounter, 102 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1263 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 [2024-11-28 02:48:41,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1263 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:48:41,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2024-11-28 02:48:41,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1333. [2024-11-28 02:48:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1072 states have (on average 1.3973880597014925) internal successors, (1498), 1091 states have internal predecessors, (1498), 139 states have call successors, (139), 92 states have call predecessors, (139), 120 states have return successors, (201), 156 states have call predecessors, (201), 135 states have call successors, (201) [2024-11-28 02:48:42,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1838 transitions. [2024-11-28 02:48:42,009 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1838 transitions. Word has length 63 [2024-11-28 02:48:42,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:42,009 INFO L471 AbstractCegarLoop]: Abstraction has 1333 states and 1838 transitions. [2024-11-28 02:48:42,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:48:42,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1838 transitions. [2024-11-28 02:48:42,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 02:48:42,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:42,012 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] [2024-11-28 02:48:42,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:48:42,012 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:42,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:42,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1459861454, now seen corresponding path program 1 times [2024-11-28 02:48:42,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:42,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724926020] [2024-11-28 02:48:42,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:42,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:42,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:42,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724926020] [2024-11-28 02:48:42,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724926020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:42,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:42,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:48:42,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778185287] [2024-11-28 02:48:42,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:42,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:48:42,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:42,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:48:42,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:48:42,098 INFO L87 Difference]: Start difference. First operand 1333 states and 1838 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) [2024-11-28 02:48:42,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:42,316 INFO L93 Difference]: Finished difference Result 3185 states and 4281 transitions. [2024-11-28 02:48:42,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:48:42,317 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 [2024-11-28 02:48:42,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:42,332 INFO L225 Difference]: With dead ends: 3185 [2024-11-28 02:48:42,332 INFO L226 Difference]: Without dead ends: 2207 [2024-11-28 02:48:42,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:48:42,336 INFO L435 NwaCegarLoop]: 649 mSDtfsCounter, 622 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 753 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 [2024-11-28 02:48:42,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 753 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:48:42,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2024-11-28 02:48:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2173. [2024-11-28 02:48:42,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2173 states, 1712 states have (on average 1.3452102803738317) internal successors, (2303), 1745 states have internal predecessors, (2303), 237 states have call successors, (237), 176 states have call predecessors, (237), 222 states have return successors, (345), 258 states have call predecessors, (345), 233 states have call successors, (345) [2024-11-28 02:48:42,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 2885 transitions. [2024-11-28 02:48:42,614 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 2885 transitions. Word has length 64 [2024-11-28 02:48:42,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:42,615 INFO L471 AbstractCegarLoop]: Abstraction has 2173 states and 2885 transitions. [2024-11-28 02:48:42,615 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) [2024-11-28 02:48:42,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 2885 transitions. [2024-11-28 02:48:42,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:48:42,619 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:42,619 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:42,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:48:42,619 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:42,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:42,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2001338533, now seen corresponding path program 1 times [2024-11-28 02:48:42,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:42,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124874284] [2024-11-28 02:48:42,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:42,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:42,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:42,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124874284] [2024-11-28 02:48:42,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124874284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:42,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:42,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:48:42,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007547182] [2024-11-28 02:48:42,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:42,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:48:42,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:42,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:48:42,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:48:42,762 INFO L87 Difference]: Start difference. First operand 2173 states and 2885 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 02:48:43,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:43,200 INFO L93 Difference]: Finished difference Result 2938 states and 3839 transitions. [2024-11-28 02:48:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:48:43,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2024-11-28 02:48:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:43,218 INFO L225 Difference]: With dead ends: 2938 [2024-11-28 02:48:43,219 INFO L226 Difference]: Without dead ends: 2935 [2024-11-28 02:48:43,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:48:43,224 INFO L435 NwaCegarLoop]: 654 mSDtfsCounter, 1220 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:43,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 740 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:48:43,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2024-11-28 02:48:43,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2898. [2024-11-28 02:48:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2898 states, 2264 states have (on average 1.3242049469964665) internal successors, (2998), 2307 states have internal predecessors, (2998), 318 states have call successors, (318), 246 states have call predecessors, (318), 314 states have return successors, (468), 351 states have call predecessors, (468), 315 states have call successors, (468) [2024-11-28 02:48:43,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 3784 transitions. [2024-11-28 02:48:43,566 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 3784 transitions. Word has length 68 [2024-11-28 02:48:43,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:43,568 INFO L471 AbstractCegarLoop]: Abstraction has 2898 states and 3784 transitions. [2024-11-28 02:48:43,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 02:48:43,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 3784 transitions. [2024-11-28 02:48:43,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 02:48:43,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:43,575 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:43,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:48:43,575 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:43,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:43,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1913252776, now seen corresponding path program 1 times [2024-11-28 02:48:43,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:43,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678813694] [2024-11-28 02:48:43,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:43,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:43,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:43,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678813694] [2024-11-28 02:48:43,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678813694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:43,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884193670] [2024-11-28 02:48:43,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:43,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:43,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:43,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:43,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:48:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:43,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:48:43,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:44,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:48:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:44,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884193670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:48:44,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:48:44,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-28 02:48:44,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43091749] [2024-11-28 02:48:44,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:48:44,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:48:44,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:44,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:48:44,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:48:44,481 INFO L87 Difference]: Start difference. First operand 2898 states and 3784 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 02:48:45,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:45,447 INFO L93 Difference]: Finished difference Result 6541 states and 8431 transitions. [2024-11-28 02:48:45,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:48:45,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 69 [2024-11-28 02:48:45,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:45,486 INFO L225 Difference]: With dead ends: 6541 [2024-11-28 02:48:45,487 INFO L226 Difference]: Without dead ends: 6538 [2024-11-28 02:48:45,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:48:45,492 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 1636 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:45,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1636 Valid, 2316 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:48:45,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6538 states. [2024-11-28 02:48:46,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6538 to 4581. [2024-11-28 02:48:46,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4581 states, 3567 states have (on average 1.3117465657415195) internal successors, (4679), 3634 states have internal predecessors, (4679), 498 states have call successors, (498), 400 states have call predecessors, (498), 514 states have return successors, (746), 553 states have call predecessors, (746), 495 states have call successors, (746) [2024-11-28 02:48:46,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 5923 transitions. [2024-11-28 02:48:46,162 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 5923 transitions. Word has length 69 [2024-11-28 02:48:46,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:46,163 INFO L471 AbstractCegarLoop]: Abstraction has 4581 states and 5923 transitions. [2024-11-28 02:48:46,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 02:48:46,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 5923 transitions. [2024-11-28 02:48:46,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 02:48:46,166 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:46,166 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:46,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:48:46,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:46,370 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:46,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:46,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1850262486, now seen corresponding path program 2 times [2024-11-28 02:48:46,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:46,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121639700] [2024-11-28 02:48:46,371 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:48:46,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:46,395 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:48:46,395 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:48:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:46,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:46,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121639700] [2024-11-28 02:48:46,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121639700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:46,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:46,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:48:46,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931773514] [2024-11-28 02:48:46,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:46,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:48:46,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:46,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:48:46,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:48:46,430 INFO L87 Difference]: Start difference. First operand 4581 states and 5923 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 02:48:46,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:46,748 INFO L93 Difference]: Finished difference Result 6891 states and 8903 transitions. [2024-11-28 02:48:46,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:48:46,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2024-11-28 02:48:46,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:46,769 INFO L225 Difference]: With dead ends: 6891 [2024-11-28 02:48:46,770 INFO L226 Difference]: Without dead ends: 3078 [2024-11-28 02:48:46,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:48:46,779 INFO L435 NwaCegarLoop]: 738 mSDtfsCounter, 620 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:46,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 851 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:48:46,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2024-11-28 02:48:47,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 3058. [2024-11-28 02:48:47,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3058 states, 2392 states have (on average 1.3026755852842808) internal successors, (3116), 2437 states have internal predecessors, (3116), 334 states have call successors, (334), 260 states have call predecessors, (334), 330 states have return successors, (476), 367 states have call predecessors, (476), 331 states have call successors, (476) [2024-11-28 02:48:47,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3058 states to 3058 states and 3926 transitions. [2024-11-28 02:48:47,049 INFO L78 Accepts]: Start accepts. Automaton has 3058 states and 3926 transitions. Word has length 71 [2024-11-28 02:48:47,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:47,052 INFO L471 AbstractCegarLoop]: Abstraction has 3058 states and 3926 transitions. [2024-11-28 02:48:47,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-28 02:48:47,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3058 states and 3926 transitions. [2024-11-28 02:48:47,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-28 02:48:47,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:47,055 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:47,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:48:47,057 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:47,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:47,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1723033281, now seen corresponding path program 1 times [2024-11-28 02:48:47,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:47,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981447751] [2024-11-28 02:48:47,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:47,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:48:47,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:47,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981447751] [2024-11-28 02:48:47,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981447751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:47,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:47,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:48:47,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369971882] [2024-11-28 02:48:47,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:47,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:48:47,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:47,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:48:47,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:48:47,198 INFO L87 Difference]: Start difference. First operand 3058 states and 3926 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:48:49,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:49,103 INFO L93 Difference]: Finished difference Result 8766 states and 11034 transitions. [2024-11-28 02:48:49,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:48:49,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 80 [2024-11-28 02:48:49,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:49,130 INFO L225 Difference]: With dead ends: 8766 [2024-11-28 02:48:49,130 INFO L226 Difference]: Without dead ends: 4745 [2024-11-28 02:48:49,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:48:49,142 INFO L435 NwaCegarLoop]: 422 mSDtfsCounter, 695 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:49,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 1834 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:48:49,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4745 states. [2024-11-28 02:48:49,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4745 to 4493. [2024-11-28 02:48:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4493 states, 3485 states have (on average 1.2694404591104735) internal successors, (4424), 3563 states have internal predecessors, (4424), 490 states have call successors, (490), 395 states have call predecessors, (490), 516 states have return successors, (751), 541 states have call predecessors, (751), 487 states have call successors, (751) [2024-11-28 02:48:49,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4493 states to 4493 states and 5665 transitions. [2024-11-28 02:48:49,571 INFO L78 Accepts]: Start accepts. Automaton has 4493 states and 5665 transitions. Word has length 80 [2024-11-28 02:48:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:49,571 INFO L471 AbstractCegarLoop]: Abstraction has 4493 states and 5665 transitions. [2024-11-28 02:48:49,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:48:49,572 INFO L276 IsEmpty]: Start isEmpty. Operand 4493 states and 5665 transitions. [2024-11-28 02:48:49,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 02:48:49,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:49,575 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:49,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:48:49,576 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:49,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:49,576 INFO L85 PathProgramCache]: Analyzing trace with hash -28634689, now seen corresponding path program 1 times [2024-11-28 02:48:49,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:49,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722482394] [2024-11-28 02:48:49,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:49,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:48:49,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:49,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722482394] [2024-11-28 02:48:49,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722482394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:49,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:49,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:48:49,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666764449] [2024-11-28 02:48:49,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:49,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:48:49,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:49,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:48:49,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:48:49,719 INFO L87 Difference]: Start difference. First operand 4493 states and 5665 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:48:51,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:51,745 INFO L93 Difference]: Finished difference Result 8079 states and 10075 transitions. [2024-11-28 02:48:51,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:48:51,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 86 [2024-11-28 02:48:51,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:51,781 INFO L225 Difference]: With dead ends: 8079 [2024-11-28 02:48:51,781 INFO L226 Difference]: Without dead ends: 4150 [2024-11-28 02:48:51,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:48:51,792 INFO L435 NwaCegarLoop]: 431 mSDtfsCounter, 1544 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:51,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 1888 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 02:48:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2024-11-28 02:48:52,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 3856. [2024-11-28 02:48:52,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3007 states have (on average 1.2620552045227802) internal successors, (3795), 3067 states have internal predecessors, (3795), 418 states have call successors, (418), 332 states have call predecessors, (418), 429 states have return successors, (578), 463 states have call predecessors, (578), 415 states have call successors, (578) [2024-11-28 02:48:52,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 4791 transitions. [2024-11-28 02:48:52,195 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 4791 transitions. Word has length 86 [2024-11-28 02:48:52,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:52,196 INFO L471 AbstractCegarLoop]: Abstraction has 3856 states and 4791 transitions. [2024-11-28 02:48:52,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:48:52,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 4791 transitions. [2024-11-28 02:48:52,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-28 02:48:52,212 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:52,213 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:52,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:48:52,213 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:52,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:52,213 INFO L85 PathProgramCache]: Analyzing trace with hash -115352500, now seen corresponding path program 1 times [2024-11-28 02:48:52,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:52,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463121915] [2024-11-28 02:48:52,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:52,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 02:48:52,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:52,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463121915] [2024-11-28 02:48:52,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463121915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:52,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041220525] [2024-11-28 02:48:52,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:52,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:52,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:52,390 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:52,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:48:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:52,540 INFO L256 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:48:52,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:52,603 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:48:52,603 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:48:52,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041220525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:52,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:48:52,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-28 02:48:52,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867628028] [2024-11-28 02:48:52,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:52,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:48:52,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:52,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:48:52,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:48:52,606 INFO L87 Difference]: Start difference. First operand 3856 states and 4791 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:48:52,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:52,782 INFO L93 Difference]: Finished difference Result 5455 states and 6744 transitions. [2024-11-28 02:48:52,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:48:52,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2024-11-28 02:48:52,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:52,795 INFO L225 Difference]: With dead ends: 5455 [2024-11-28 02:48:52,795 INFO L226 Difference]: Without dead ends: 1958 [2024-11-28 02:48:52,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:48:52,803 INFO L435 NwaCegarLoop]: 645 mSDtfsCounter, 0 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:52,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3216 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:48:52,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2024-11-28 02:48:52,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1958. [2024-11-28 02:48:52,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1958 states, 1590 states have (on average 1.2955974842767295) internal successors, (2060), 1609 states have internal predecessors, (2060), 181 states have call successors, (181), 133 states have call predecessors, (181), 185 states have return successors, (254), 216 states have call predecessors, (254), 178 states have call successors, (254) [2024-11-28 02:48:52,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2495 transitions. [2024-11-28 02:48:52,975 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2495 transitions. Word has length 139 [2024-11-28 02:48:52,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:52,976 INFO L471 AbstractCegarLoop]: Abstraction has 1958 states and 2495 transitions. [2024-11-28 02:48:52,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 02:48:52,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2495 transitions. [2024-11-28 02:48:52,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 02:48:52,981 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:52,982 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:52,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:48:53,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:48:53,186 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:53,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:53,186 INFO L85 PathProgramCache]: Analyzing trace with hash 683742618, now seen corresponding path program 1 times [2024-11-28 02:48:53,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:53,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632331903] [2024-11-28 02:48:53,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:53,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:53,251 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 02:48:53,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:53,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632331903] [2024-11-28 02:48:53,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632331903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:53,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:53,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:48:53,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884135226] [2024-11-28 02:48:53,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:53,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:48:53,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:53,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:48:53,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:48:53,254 INFO L87 Difference]: Start difference. First operand 1958 states and 2495 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 02:48:53,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:53,415 INFO L93 Difference]: Finished difference Result 3218 states and 4045 transitions. [2024-11-28 02:48:53,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:48:53,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 141 [2024-11-28 02:48:53,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:53,425 INFO L225 Difference]: With dead ends: 3218 [2024-11-28 02:48:53,425 INFO L226 Difference]: Without dead ends: 1831 [2024-11-28 02:48:53,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:48:53,428 INFO L435 NwaCegarLoop]: 646 mSDtfsCounter, 119 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:53,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 1169 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:48:53,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2024-11-28 02:48:53,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1824. [2024-11-28 02:48:53,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1489 states have (on average 1.305574210879785) internal successors, (1944), 1505 states have internal predecessors, (1944), 166 states have call successors, (166), 119 states have call predecessors, (166), 167 states have return successors, (235), 200 states have call predecessors, (235), 163 states have call successors, (235) [2024-11-28 02:48:53,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2345 transitions. [2024-11-28 02:48:53,568 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2345 transitions. Word has length 141 [2024-11-28 02:48:53,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:53,568 INFO L471 AbstractCegarLoop]: Abstraction has 1824 states and 2345 transitions. [2024-11-28 02:48:53,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 02:48:53,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2345 transitions. [2024-11-28 02:48:53,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 02:48:53,573 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:53,574 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:53,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:48:53,574 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:53,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:53,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1969300787, now seen corresponding path program 1 times [2024-11-28 02:48:53,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:53,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388171266] [2024-11-28 02:48:53,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:53,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:53,696 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-28 02:48:53,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:53,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388171266] [2024-11-28 02:48:53,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388171266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:53,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:53,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:48:53,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700508706] [2024-11-28 02:48:53,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:53,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:48:53,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:53,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:48:53,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:48:53,698 INFO L87 Difference]: Start difference. First operand 1824 states and 2345 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:48:54,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:54,687 INFO L93 Difference]: Finished difference Result 3153 states and 3991 transitions. [2024-11-28 02:48:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:48:54,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 150 [2024-11-28 02:48:54,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:54,699 INFO L225 Difference]: With dead ends: 3153 [2024-11-28 02:48:54,699 INFO L226 Difference]: Without dead ends: 1875 [2024-11-28 02:48:54,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:48:54,703 INFO L435 NwaCegarLoop]: 392 mSDtfsCounter, 322 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:54,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 1353 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:48:54,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2024-11-28 02:48:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1797. [2024-11-28 02:48:54,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1476 states have (on average 1.2994579945799458) internal successors, (1918), 1492 states have internal predecessors, (1918), 162 states have call successors, (162), 119 states have call predecessors, (162), 157 states have return successors, (221), 186 states have call predecessors, (221), 159 states have call successors, (221) [2024-11-28 02:48:54,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2301 transitions. [2024-11-28 02:48:54,852 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2301 transitions. Word has length 150 [2024-11-28 02:48:54,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:54,853 INFO L471 AbstractCegarLoop]: Abstraction has 1797 states and 2301 transitions. [2024-11-28 02:48:54,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 3 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 02:48:54,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2301 transitions. [2024-11-28 02:48:54,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 02:48:54,857 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:54,857 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:54,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:48:54,857 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:54,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:54,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1737122323, now seen corresponding path program 1 times [2024-11-28 02:48:54,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:54,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535268913] [2024-11-28 02:48:54,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:54,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 02:48:55,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:55,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535268913] [2024-11-28 02:48:55,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535268913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:48:55,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989041532] [2024-11-28 02:48:55,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:55,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:48:55,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:48:55,211 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:48:55,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:48:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:55,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:48:55,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:48:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 02:48:55,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:48:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-28 02:48:55,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989041532] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:48:55,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:48:55,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2024-11-28 02:48:55,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279303088] [2024-11-28 02:48:55,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:48:55,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:48:55,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:55,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:48:55,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:48:55,910 INFO L87 Difference]: Start difference. First operand 1797 states and 2301 transitions. Second operand has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2024-11-28 02:48:57,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:57,856 INFO L93 Difference]: Finished difference Result 3806 states and 4833 transitions. [2024-11-28 02:48:57,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 02:48:57,856 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 153 [2024-11-28 02:48:57,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:57,870 INFO L225 Difference]: With dead ends: 3806 [2024-11-28 02:48:57,870 INFO L226 Difference]: Without dead ends: 2441 [2024-11-28 02:48:57,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2024-11-28 02:48:57,876 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1851 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:57,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 1621 Invalid, 2114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 02:48:57,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2024-11-28 02:48:58,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 2248. [2024-11-28 02:48:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 1808 states have (on average 1.2599557522123894) internal successors, (2278), 1831 states have internal predecessors, (2278), 220 states have call successors, (220), 173 states have call predecessors, (220), 218 states have return successors, (338), 244 states have call predecessors, (338), 217 states have call successors, (338) [2024-11-28 02:48:58,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 2836 transitions. [2024-11-28 02:48:58,153 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 2836 transitions. Word has length 153 [2024-11-28 02:48:58,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:58,154 INFO L471 AbstractCegarLoop]: Abstraction has 2248 states and 2836 transitions. [2024-11-28 02:48:58,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.692307692307693) internal successors, (230), 13 states have internal predecessors, (230), 6 states have call successors, (36), 7 states have call predecessors, (36), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2024-11-28 02:48:58,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 2836 transitions. [2024-11-28 02:48:58,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:48:58,160 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:58,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:58,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:48:58,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1b1d11-9572-4222-b11a-a6c739589114/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:48:58,365 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:58,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:58,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1291331769, now seen corresponding path program 1 times [2024-11-28 02:48:58,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:58,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326473979] [2024-11-28 02:48:58,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:58,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:58,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:58,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326473979] [2024-11-28 02:48:58,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326473979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:58,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:58,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:48:58,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419110203] [2024-11-28 02:48:58,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:58,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:48:58,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:58,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:48:58,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:48:58,459 INFO L87 Difference]: Start difference. First operand 2248 states and 2836 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2024-11-28 02:48:58,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:58,717 INFO L93 Difference]: Finished difference Result 2574 states and 3351 transitions. [2024-11-28 02:48:58,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:48:58,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 155 [2024-11-28 02:48:58,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:58,739 INFO L225 Difference]: With dead ends: 2574 [2024-11-28 02:48:58,739 INFO L226 Difference]: Without dead ends: 2248 [2024-11-28 02:48:58,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:48:58,743 INFO L435 NwaCegarLoop]: 645 mSDtfsCounter, 517 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:58,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 769 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:48:58,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2024-11-28 02:48:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 2248. [2024-11-28 02:48:58,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 1808 states have (on average 1.2594026548672566) internal successors, (2277), 1831 states have internal predecessors, (2277), 220 states have call successors, (220), 173 states have call predecessors, (220), 218 states have return successors, (338), 244 states have call predecessors, (338), 217 states have call successors, (338) [2024-11-28 02:48:58,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 2835 transitions. [2024-11-28 02:48:58,938 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 2835 transitions. Word has length 155 [2024-11-28 02:48:58,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:58,938 INFO L471 AbstractCegarLoop]: Abstraction has 2248 states and 2835 transitions. [2024-11-28 02:48:58,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2024-11-28 02:48:58,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 2835 transitions. [2024-11-28 02:48:58,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:48:58,943 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:58,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:58,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:48:58,943 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:58,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:58,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1072509893, now seen corresponding path program 1 times [2024-11-28 02:48:58,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:58,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312511469] [2024-11-28 02:48:58,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:58,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:59,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:59,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312511469] [2024-11-28 02:48:59,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312511469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:59,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:59,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:48:59,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887287785] [2024-11-28 02:48:59,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:59,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:48:59,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:59,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:48:59,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:48:59,035 INFO L87 Difference]: Start difference. First operand 2248 states and 2835 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2024-11-28 02:48:59,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:48:59,213 INFO L93 Difference]: Finished difference Result 2566 states and 3334 transitions. [2024-11-28 02:48:59,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:48:59,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 155 [2024-11-28 02:48:59,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:48:59,225 INFO L225 Difference]: With dead ends: 2566 [2024-11-28 02:48:59,225 INFO L226 Difference]: Without dead ends: 2248 [2024-11-28 02:48:59,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:48:59,228 INFO L435 NwaCegarLoop]: 644 mSDtfsCounter, 508 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:48:59,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 768 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:48:59,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2024-11-28 02:48:59,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 2248. [2024-11-28 02:48:59,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 1808 states have (on average 1.258849557522124) internal successors, (2276), 1831 states have internal predecessors, (2276), 220 states have call successors, (220), 173 states have call predecessors, (220), 218 states have return successors, (338), 244 states have call predecessors, (338), 217 states have call successors, (338) [2024-11-28 02:48:59,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 2834 transitions. [2024-11-28 02:48:59,473 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 2834 transitions. Word has length 155 [2024-11-28 02:48:59,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:48:59,473 INFO L471 AbstractCegarLoop]: Abstraction has 2248 states and 2834 transitions. [2024-11-28 02:48:59,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2024-11-28 02:48:59,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 2834 transitions. [2024-11-28 02:48:59,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:48:59,478 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:48:59,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:48:59,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:48:59,478 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:48:59,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:48:59,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1434587581, now seen corresponding path program 1 times [2024-11-28 02:48:59,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:48:59,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058428874] [2024-11-28 02:48:59,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:48:59,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:48:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:48:59,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:48:59,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:48:59,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058428874] [2024-11-28 02:48:59,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058428874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:48:59,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:48:59,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:48:59,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062675322] [2024-11-28 02:48:59,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:48:59,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:48:59,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:48:59,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:48:59,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:48:59,628 INFO L87 Difference]: Start difference. First operand 2248 states and 2834 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 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) [2024-11-28 02:49:00,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:00,577 INFO L93 Difference]: Finished difference Result 2916 states and 3900 transitions. [2024-11-28 02:49:00,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:49:00,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 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 155 [2024-11-28 02:49:00,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:00,590 INFO L225 Difference]: With dead ends: 2916 [2024-11-28 02:49:00,591 INFO L226 Difference]: Without dead ends: 2602 [2024-11-28 02:49:00,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:00,593 INFO L435 NwaCegarLoop]: 464 mSDtfsCounter, 1152 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:00,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 1591 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:49:00,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2024-11-28 02:49:00,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2575. [2024-11-28 02:49:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2575 states, 2109 states have (on average 1.3077287814129919) internal successors, (2758), 2133 states have internal predecessors, (2758), 239 states have call successors, (239), 179 states have call predecessors, (239), 225 states have return successors, (358), 263 states have call predecessors, (358), 236 states have call successors, (358) [2024-11-28 02:49:00,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3355 transitions. [2024-11-28 02:49:00,838 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3355 transitions. Word has length 155 [2024-11-28 02:49:00,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:00,839 INFO L471 AbstractCegarLoop]: Abstraction has 2575 states and 3355 transitions. [2024-11-28 02:49:00,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 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) [2024-11-28 02:49:00,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3355 transitions. [2024-11-28 02:49:00,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:49:00,844 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:00,845 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:00,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:49:00,845 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:00,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:00,846 INFO L85 PathProgramCache]: Analyzing trace with hash -128868033, now seen corresponding path program 1 times [2024-11-28 02:49:00,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:00,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575046383] [2024-11-28 02:49:00,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:00,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:01,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:01,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575046383] [2024-11-28 02:49:01,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575046383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:01,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:01,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:49:01,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775984506] [2024-11-28 02:49:01,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:01,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:49:01,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:01,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:49:01,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:01,054 INFO L87 Difference]: Start difference. First operand 2575 states and 3355 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:02,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:02,435 INFO L93 Difference]: Finished difference Result 3635 states and 5063 transitions. [2024-11-28 02:49:02,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:49:02,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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 155 [2024-11-28 02:49:02,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:02,449 INFO L225 Difference]: With dead ends: 3635 [2024-11-28 02:49:02,449 INFO L226 Difference]: Without dead ends: 2994 [2024-11-28 02:49:02,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:49:02,455 INFO L435 NwaCegarLoop]: 744 mSDtfsCounter, 1157 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:02,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 2978 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:49:02,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2024-11-28 02:49:02,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2879. [2024-11-28 02:49:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2387 states have (on average 1.3380812735651446) internal successors, (3194), 2412 states have internal predecessors, (3194), 258 states have call successors, (258), 185 states have call predecessors, (258), 232 states have return successors, (380), 283 states have call predecessors, (380), 255 states have call successors, (380) [2024-11-28 02:49:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 3832 transitions. [2024-11-28 02:49:02,729 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 3832 transitions. Word has length 155 [2024-11-28 02:49:02,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:02,729 INFO L471 AbstractCegarLoop]: Abstraction has 2879 states and 3832 transitions. [2024-11-28 02:49:02,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:02,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 3832 transitions. [2024-11-28 02:49:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:49:02,734 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:02,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:02,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:49:02,736 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:02,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:02,738 INFO L85 PathProgramCache]: Analyzing trace with hash 234598465, now seen corresponding path program 1 times [2024-11-28 02:49:02,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:02,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536746722] [2024-11-28 02:49:02,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:02,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:02,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:02,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536746722] [2024-11-28 02:49:02,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536746722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:02,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:02,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:49:02,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708858118] [2024-11-28 02:49:02,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:02,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:49:02,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:02,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:49:02,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:02,940 INFO L87 Difference]: Start difference. First operand 2879 states and 3832 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:04,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:04,225 INFO L93 Difference]: Finished difference Result 4605 states and 6609 transitions. [2024-11-28 02:49:04,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:49:04,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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 155 [2024-11-28 02:49:04,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:04,240 INFO L225 Difference]: With dead ends: 4605 [2024-11-28 02:49:04,241 INFO L226 Difference]: Without dead ends: 3660 [2024-11-28 02:49:04,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:49:04,245 INFO L435 NwaCegarLoop]: 740 mSDtfsCounter, 1152 mSDsluCounter, 2222 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:04,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 2962 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:49:04,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3660 states. [2024-11-28 02:49:04,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3660 to 3528. [2024-11-28 02:49:04,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3528 states, 2982 states have (on average 1.3886653252850436) internal successors, (4141), 3011 states have internal predecessors, (4141), 296 states have call successors, (296), 197 states have call predecessors, (296), 248 states have return successors, (430), 323 states have call predecessors, (430), 293 states have call successors, (430) [2024-11-28 02:49:04,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3528 states to 3528 states and 4867 transitions. [2024-11-28 02:49:04,603 INFO L78 Accepts]: Start accepts. Automaton has 3528 states and 4867 transitions. Word has length 155 [2024-11-28 02:49:04,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:04,603 INFO L471 AbstractCegarLoop]: Abstraction has 3528 states and 4867 transitions. [2024-11-28 02:49:04,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:04,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3528 states and 4867 transitions. [2024-11-28 02:49:04,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:49:04,609 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:04,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:04,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 02:49:04,610 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:04,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:04,610 INFO L85 PathProgramCache]: Analyzing trace with hash 523417855, now seen corresponding path program 1 times [2024-11-28 02:49:04,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:04,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927600021] [2024-11-28 02:49:04,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:04,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:04,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:04,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927600021] [2024-11-28 02:49:04,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927600021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:04,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:04,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:49:04,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178588983] [2024-11-28 02:49:04,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:04,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:49:04,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:04,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:49:04,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:04,780 INFO L87 Difference]: Start difference. First operand 3528 states and 4867 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:06,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:06,162 INFO L93 Difference]: Finished difference Result 6704 states and 10022 transitions. [2024-11-28 02:49:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:49:06,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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 155 [2024-11-28 02:49:06,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:06,183 INFO L225 Difference]: With dead ends: 6704 [2024-11-28 02:49:06,184 INFO L226 Difference]: Without dead ends: 5110 [2024-11-28 02:49:06,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:49:06,191 INFO L435 NwaCegarLoop]: 737 mSDtfsCounter, 1147 mSDsluCounter, 2213 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:06,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 2950 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:49:06,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5110 states. [2024-11-28 02:49:06,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5110 to 4943. [2024-11-28 02:49:06,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4943 states, 4283 states have (on average 1.4590240485640906) internal successors, (6249), 4326 states have internal predecessors, (6249), 372 states have call successors, (372), 221 states have call predecessors, (372), 286 states have return successors, (554), 403 states have call predecessors, (554), 369 states have call successors, (554) [2024-11-28 02:49:06,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 7175 transitions. [2024-11-28 02:49:06,806 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 7175 transitions. Word has length 155 [2024-11-28 02:49:06,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:06,806 INFO L471 AbstractCegarLoop]: Abstraction has 4943 states and 7175 transitions. [2024-11-28 02:49:06,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:06,807 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 7175 transitions. [2024-11-28 02:49:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:49:06,813 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:06,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:06,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 02:49:06,814 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:06,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:06,815 INFO L85 PathProgramCache]: Analyzing trace with hash -21454719, now seen corresponding path program 1 times [2024-11-28 02:49:06,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:06,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836254520] [2024-11-28 02:49:06,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:06,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:06,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:06,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836254520] [2024-11-28 02:49:06,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836254520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:06,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:06,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:49:06,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557256031] [2024-11-28 02:49:06,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:06,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:49:06,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:06,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:49:06,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:06,980 INFO L87 Difference]: Start difference. First operand 4943 states and 7175 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:08,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:08,579 INFO L93 Difference]: Finished difference Result 11351 states and 17788 transitions. [2024-11-28 02:49:08,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:49:08,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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 155 [2024-11-28 02:49:08,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:08,609 INFO L225 Difference]: With dead ends: 11351 [2024-11-28 02:49:08,609 INFO L226 Difference]: Without dead ends: 8342 [2024-11-28 02:49:08,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:49:08,617 INFO L435 NwaCegarLoop]: 734 mSDtfsCounter, 1142 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 2938 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:08,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 2938 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:49:08,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8342 states. [2024-11-28 02:49:09,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8342 to 8106. [2024-11-28 02:49:09,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8106 states, 7200 states have (on average 1.5379166666666666) internal successors, (11073), 7289 states have internal predecessors, (11073), 524 states have call successors, (524), 269 states have call predecessors, (524), 380 states have return successors, (898), 563 states have call predecessors, (898), 521 states have call successors, (898) [2024-11-28 02:49:09,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8106 states to 8106 states and 12495 transitions. [2024-11-28 02:49:09,128 INFO L78 Accepts]: Start accepts. Automaton has 8106 states and 12495 transitions. Word has length 155 [2024-11-28 02:49:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:09,128 INFO L471 AbstractCegarLoop]: Abstraction has 8106 states and 12495 transitions. [2024-11-28 02:49:09,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:09,129 INFO L276 IsEmpty]: Start isEmpty. Operand 8106 states and 12495 transitions. [2024-11-28 02:49:09,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:49:09,136 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:09,136 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:09,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 02:49:09,137 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:09,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:09,137 INFO L85 PathProgramCache]: Analyzing trace with hash 653705407, now seen corresponding path program 1 times [2024-11-28 02:49:09,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:09,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057738204] [2024-11-28 02:49:09,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:09,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:09,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:09,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057738204] [2024-11-28 02:49:09,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057738204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:09,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:09,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:49:09,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376129902] [2024-11-28 02:49:09,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:09,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:49:09,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:09,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:49:09,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:49:09,252 INFO L87 Difference]: Start difference. First operand 8106 states and 12495 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:10,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:10,429 INFO L93 Difference]: Finished difference Result 15772 states and 25679 transitions. [2024-11-28 02:49:10,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:49:10,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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 155 [2024-11-28 02:49:10,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:10,467 INFO L225 Difference]: With dead ends: 15772 [2024-11-28 02:49:10,467 INFO L226 Difference]: Without dead ends: 9600 [2024-11-28 02:49:10,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:10,485 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 861 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:10,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 1174 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:49:10,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9600 states. [2024-11-28 02:49:11,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9600 to 8106. [2024-11-28 02:49:11,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8106 states, 7200 states have (on average 1.5355555555555556) internal successors, (11056), 7289 states have internal predecessors, (11056), 524 states have call successors, (524), 269 states have call predecessors, (524), 380 states have return successors, (898), 563 states have call predecessors, (898), 521 states have call successors, (898) [2024-11-28 02:49:11,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8106 states to 8106 states and 12478 transitions. [2024-11-28 02:49:11,222 INFO L78 Accepts]: Start accepts. Automaton has 8106 states and 12478 transitions. Word has length 155 [2024-11-28 02:49:11,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:11,222 INFO L471 AbstractCegarLoop]: Abstraction has 8106 states and 12478 transitions. [2024-11-28 02:49:11,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:11,222 INFO L276 IsEmpty]: Start isEmpty. Operand 8106 states and 12478 transitions. [2024-11-28 02:49:11,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:49:11,228 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:11,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:11,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 02:49:11,229 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:11,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:11,229 INFO L85 PathProgramCache]: Analyzing trace with hash -294346559, now seen corresponding path program 1 times [2024-11-28 02:49:11,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:11,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996197097] [2024-11-28 02:49:11,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:11,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:11,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:11,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996197097] [2024-11-28 02:49:11,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996197097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:11,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:11,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:49:11,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246416443] [2024-11-28 02:49:11,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:11,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:49:11,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:11,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:49:11,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:49:11,355 INFO L87 Difference]: Start difference. First operand 8106 states and 12478 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:12,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:12,691 INFO L93 Difference]: Finished difference Result 15606 states and 25313 transitions. [2024-11-28 02:49:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:49:12,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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 155 [2024-11-28 02:49:12,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:12,737 INFO L225 Difference]: With dead ends: 15606 [2024-11-28 02:49:12,737 INFO L226 Difference]: Without dead ends: 9434 [2024-11-28 02:49:12,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:12,756 INFO L435 NwaCegarLoop]: 409 mSDtfsCounter, 886 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:12,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 1098 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:49:12,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9434 states. [2024-11-28 02:49:13,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9434 to 8106. [2024-11-28 02:49:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8106 states, 7200 states have (on average 1.5331944444444445) internal successors, (11039), 7289 states have internal predecessors, (11039), 524 states have call successors, (524), 269 states have call predecessors, (524), 380 states have return successors, (898), 563 states have call predecessors, (898), 521 states have call successors, (898) [2024-11-28 02:49:13,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8106 states to 8106 states and 12461 transitions. [2024-11-28 02:49:13,465 INFO L78 Accepts]: Start accepts. Automaton has 8106 states and 12461 transitions. Word has length 155 [2024-11-28 02:49:13,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:13,466 INFO L471 AbstractCegarLoop]: Abstraction has 8106 states and 12461 transitions. [2024-11-28 02:49:13,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:13,466 INFO L276 IsEmpty]: Start isEmpty. Operand 8106 states and 12461 transitions. [2024-11-28 02:49:13,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:49:13,472 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:13,472 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:13,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 02:49:13,472 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:13,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:13,473 INFO L85 PathProgramCache]: Analyzing trace with hash -728852157, now seen corresponding path program 1 times [2024-11-28 02:49:13,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:13,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391208558] [2024-11-28 02:49:13,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:13,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:13,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:13,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391208558] [2024-11-28 02:49:13,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391208558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:13,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:13,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:49:13,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056664843] [2024-11-28 02:49:13,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:13,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:49:13,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:13,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:49:13,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:13,669 INFO L87 Difference]: Start difference. First operand 8106 states and 12461 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:15,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:15,605 INFO L93 Difference]: Finished difference Result 21618 states and 35416 transitions. [2024-11-28 02:49:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:49:15,606 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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 155 [2024-11-28 02:49:15,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:15,654 INFO L225 Difference]: With dead ends: 21618 [2024-11-28 02:49:15,655 INFO L226 Difference]: Without dead ends: 15446 [2024-11-28 02:49:15,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:49:15,668 INFO L435 NwaCegarLoop]: 717 mSDtfsCounter, 1118 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:15,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 2874 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:49:15,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15446 states. [2024-11-28 02:49:16,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15446 to 15134. [2024-11-28 02:49:16,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15134 states, 13682 states have (on average 1.5998392047946206) internal successors, (21889), 13917 states have internal predecessors, (21889), 828 states have call successors, (828), 365 states have call predecessors, (828), 622 states have return successors, (1970), 883 states have call predecessors, (1970), 825 states have call successors, (1970) [2024-11-28 02:49:16,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15134 states to 15134 states and 24687 transitions. [2024-11-28 02:49:16,806 INFO L78 Accepts]: Start accepts. Automaton has 15134 states and 24687 transitions. Word has length 155 [2024-11-28 02:49:16,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:16,807 INFO L471 AbstractCegarLoop]: Abstraction has 15134 states and 24687 transitions. [2024-11-28 02:49:16,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:16,807 INFO L276 IsEmpty]: Start isEmpty. Operand 15134 states and 24687 transitions. [2024-11-28 02:49:16,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:49:16,811 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:16,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:16,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 02:49:16,812 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:16,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:16,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1158510463, now seen corresponding path program 1 times [2024-11-28 02:49:16,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:16,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588908639] [2024-11-28 02:49:16,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:16,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:16,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:16,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588908639] [2024-11-28 02:49:16,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588908639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:16,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:16,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:49:16,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666358912] [2024-11-28 02:49:16,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:16,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:49:16,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:16,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:49:16,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:49:16,931 INFO L87 Difference]: Start difference. First operand 15134 states and 24687 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:18,581 INFO L93 Difference]: Finished difference Result 31764 states and 54249 transitions. [2024-11-28 02:49:18,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:49:18,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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 155 [2024-11-28 02:49:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:18,662 INFO L225 Difference]: With dead ends: 31764 [2024-11-28 02:49:18,662 INFO L226 Difference]: Without dead ends: 18564 [2024-11-28 02:49:18,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:18,702 INFO L435 NwaCegarLoop]: 435 mSDtfsCounter, 853 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:18,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1146 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:49:18,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18564 states. [2024-11-28 02:49:20,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18564 to 15134. [2024-11-28 02:49:20,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15134 states, 13682 states have (on average 1.5974272767139308) internal successors, (21856), 13917 states have internal predecessors, (21856), 828 states have call successors, (828), 365 states have call predecessors, (828), 622 states have return successors, (1970), 883 states have call predecessors, (1970), 825 states have call successors, (1970) [2024-11-28 02:49:20,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15134 states to 15134 states and 24654 transitions. [2024-11-28 02:49:20,186 INFO L78 Accepts]: Start accepts. Automaton has 15134 states and 24654 transitions. Word has length 155 [2024-11-28 02:49:20,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:20,186 INFO L471 AbstractCegarLoop]: Abstraction has 15134 states and 24654 transitions. [2024-11-28 02:49:20,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:20,186 INFO L276 IsEmpty]: Start isEmpty. Operand 15134 states and 24654 transitions. [2024-11-28 02:49:20,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:49:20,191 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:20,191 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:20,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 02:49:20,191 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:20,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:20,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1865107069, now seen corresponding path program 1 times [2024-11-28 02:49:20,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:20,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411963025] [2024-11-28 02:49:20,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:20,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:20,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:20,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411963025] [2024-11-28 02:49:20,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411963025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:20,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:20,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:49:20,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612663018] [2024-11-28 02:49:20,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:20,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:49:20,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:20,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:49:20,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:20,328 INFO L87 Difference]: Start difference. First operand 15134 states and 24654 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:22,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:22,686 INFO L93 Difference]: Finished difference Result 44816 states and 77257 transitions. [2024-11-28 02:49:22,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:49:22,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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 155 [2024-11-28 02:49:22,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:22,807 INFO L225 Difference]: With dead ends: 44816 [2024-11-28 02:49:22,807 INFO L226 Difference]: Without dead ends: 31616 [2024-11-28 02:49:22,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:49:22,845 INFO L435 NwaCegarLoop]: 709 mSDtfsCounter, 1105 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 2843 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:22,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 2843 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:49:22,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31616 states. [2024-11-28 02:49:24,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31616 to 31134. [2024-11-28 02:49:24,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31134 states, 28428 states have (on average 1.6501336710285635) internal successors, (46910), 29117 states have internal predecessors, (46910), 1436 states have call successors, (1436), 557 states have call predecessors, (1436), 1268 states have return successors, (5650), 1523 states have call predecessors, (5650), 1433 states have call successors, (5650) [2024-11-28 02:49:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31134 states to 31134 states and 53996 transitions. [2024-11-28 02:49:24,897 INFO L78 Accepts]: Start accepts. Automaton has 31134 states and 53996 transitions. Word has length 155 [2024-11-28 02:49:24,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:24,898 INFO L471 AbstractCegarLoop]: Abstraction has 31134 states and 53996 transitions. [2024-11-28 02:49:24,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:24,898 INFO L276 IsEmpty]: Start isEmpty. Operand 31134 states and 53996 transitions. [2024-11-28 02:49:24,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:49:24,909 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:24,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:24,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 02:49:24,909 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:24,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:24,910 INFO L85 PathProgramCache]: Analyzing trace with hash -918069183, now seen corresponding path program 1 times [2024-11-28 02:49:24,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:24,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291843109] [2024-11-28 02:49:24,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:24,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:25,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:25,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:25,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291843109] [2024-11-28 02:49:25,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291843109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:25,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:25,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:49:25,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163801963] [2024-11-28 02:49:25,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:25,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:49:25,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:25,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:49:25,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:25,091 INFO L87 Difference]: Start difference. First operand 31134 states and 53996 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:29,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:49:29,675 INFO L93 Difference]: Finished difference Result 103554 states and 189174 transitions. [2024-11-28 02:49:29,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:49:29,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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 155 [2024-11-28 02:49:29,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:49:29,932 INFO L225 Difference]: With dead ends: 103554 [2024-11-28 02:49:29,933 INFO L226 Difference]: Without dead ends: 74354 [2024-11-28 02:49:29,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:49:29,999 INFO L435 NwaCegarLoop]: 704 mSDtfsCounter, 1203 mSDsluCounter, 2114 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:49:30,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 2818 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:49:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74354 states. [2024-11-28 02:49:34,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74354 to 68531. [2024-11-28 02:49:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68531 states, 62895 states have (on average 1.6945385165752445) internal successors, (106578), 64978 states have internal predecessors, (106578), 2588 states have call successors, (2588), 941 states have call predecessors, (2588), 3046 states have return successors, (19090), 2739 states have call predecessors, (19090), 2585 states have call successors, (19090) [2024-11-28 02:49:35,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68531 states to 68531 states and 128256 transitions. [2024-11-28 02:49:35,166 INFO L78 Accepts]: Start accepts. Automaton has 68531 states and 128256 transitions. Word has length 155 [2024-11-28 02:49:35,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:49:35,167 INFO L471 AbstractCegarLoop]: Abstraction has 68531 states and 128256 transitions. [2024-11-28 02:49:35,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-11-28 02:49:35,167 INFO L276 IsEmpty]: Start isEmpty. Operand 68531 states and 128256 transitions. [2024-11-28 02:49:35,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:49:35,186 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:49:35,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:49:35,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 02:49:35,187 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:49:35,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:49:35,187 INFO L85 PathProgramCache]: Analyzing trace with hash -56235581, now seen corresponding path program 1 times [2024-11-28 02:49:35,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:49:35,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131114819] [2024-11-28 02:49:35,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:49:35,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:49:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:49:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:49:35,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:49:35,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131114819] [2024-11-28 02:49:35,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131114819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:49:35,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:49:35,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:49:35,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756595707] [2024-11-28 02:49:35,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:49:35,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:49:35,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:49:35,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:49:35,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:49:35,646 INFO L87 Difference]: Start difference. First operand 68531 states and 128256 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 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)